Degradation and Stabilization of Polycyanoacrylates
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(12) United States Patent (10) Patent No.: US 6,699,940 B2 Shalaby (45) Date of Patent: Mar
USOO66.9994OB2 (12) United States Patent (10) Patent No.: US 6,699,940 B2 Shalaby (45) Date of Patent: Mar. 2, 2004 (54) CYANOACRYLATE-CAPPED (56) References Cited HETEROCHAIN POLYMERS AND TISSUE ADHESIVES AND SEALANTS THEREFROM U.S. PATENT DOCUMENTS 4,260,719 A * 4/1981 Ching ........................ 528/196 (75) Inventor: Shalaby W. Shalaby, Anderson, SC 4,377,490 A * 3/1983 Shiraishi et al. ...... 252/188.3 R (US) 5,340,873 A * 8/1994 Mitry .......................... 525/10 5,350,798 A 9/1994 Linden et al. ................ 525/41 (73) Assignee: Poly Med, Inc., Anderson, SC (US) 5,373,035 A * 12/1994 Uemura et al. ............. 523/212 5,422,068 A 6/1995 Shalaby et al. ............... 422/22 (*) Notice: Subject to any disclaimer, the term of this 5,653,992 A 8/1997 Bezwada et al. ............ 264/4.3 5,714,159 A 2/1998 Shalaby ...................... 424/426 patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days. 6,299,631 B1 10/2001 Shalaby ...................... 606/214 6,462,169 B1 10/2002 Shalaby ...................... 528/354 (21) Appl. No.: 10/300,079 6,467,169 B1 10/2002 Wieres ........................ 29/890 (22) Filed: Nov. 20, 2002 * cited by examiner (65) Prior Publication Data Primary Examiner Helen L. Pezzuto US 2003/0105256 A1 Jun. 5, 2003 (74) Attorney, Agent, or Firm-Leigh P. Gregory Related U.S. Application Data (57) ABSTRACT (60) Provisional application No. 60/335,439, filed on Dec. 4, The present invention is directed toward cyanoacrylate 2001. based tissue adhesive or Sealant compositions comprising (51) Int. -
On the Mechanism of Oligomer Formation in Condensations of Alkyl Cyanoacetates with Formaldehyde
Polymer Journal, Vol. 13, No. 10, pp 975-978 (1981) NOTE On the Mechanism of Oligomer Formation in Condensations of Alkyl Cyanoacetates with Formaldehyde J. M. ROONEY Loctite (Ireland) Limited, Whitestown Industrial Estate, Ta//aght, Co. Dublin. Ireland. (Received December II, 1980) KEY WORDS Alkyl Cyanoacetates I Formaldehyde / Condensation Anionic Polymerization I Cyanoacrylate I Chain Transfer I Industrial synthetic routes to the production of Since the apparent activation energy of the over alkyl cyanoacrylate monomers frequently involve all process was found to be similar to that of the base-catalyzed condensations of alkyl cyanoacetates condensation of diethyl dicyanoglutarate with for with formaldehyde to form low molecular weight maldehyde, the addition of diethyl dicyanoglutarate polymers. 1 Early studies attributed polymer for to formaldehyde is assumed to be the rate mation to a stepwise condensation2 of the form,3.4 determining step. CN CN I I CH2 + HCHO _..... CHCH20H I I COOR COOR CN CN CN CN I I I I CHCH2 0H + CH2 -----. CH-CH2-CH + H2 0 I I I I COOR COOR COOR COOR CN CN CN CN I I I I CH-CH2-CH + HCHO -----. CH-CH2-C-CH20H I I I I COOR COOR COOR COOR CN CN CN I I I CH-CH2-C-CH20H + CH2 etc. I I I COOR COOR COOR Subsequently, a kinetic study of the reaction of philic displacement of the hydroxyl group by cya formaldehyde with methyl cyanoacetate5 yielded noacetate anion. Instead, it is postulated that evidence that methyl cyanoacrylate monomer is an essential step in water evolution is the formation of intermediate in oligomer formation. -
Born2bond Structural Cyanoacrylate Adhesive
Born2Bond Structural Cyanoacrylate Adhesive Description Born2Bond™ Structural Cyanoacrylate Adhesive is a high-strength, high-temperature (120°C) hybrid cyanoacrylate adhesive that provides a fast fixture time at room temperature while maintaining good processability and the capability to bond gaps up to 5mm. This product offers excellent bonding characteristics to a large variety of substrates, including aluminium, plastics and elastomers, but also porous substrates, such as woods, chipboard and leather. Born2Bond Structural is the toughest structural, fast cure two part (2K) cyanoacrylate adhesive on the market, with the longest open time. Born2Bond Structural offers “on demand” structural bonding. Once mixed and applied, the exposed dot or bead has an open time of up to 30 minutes – but a fixture time of only seconds once the parts are assembled. This fixture and ultimate cure time compares favourably with other structural adhesive chemistries. Formulated using MECA (methoxyethyl cyanoacrylate) chemistry, Born2Bond Structural is able to withstand temperatures up to 120°C, far exceeding the capabilities of standard cyanoacrylate adhesives. It offers a balance between bonding speed, long open time, bond strength (>6 MPa), and impact and environmental resistance. Born2Bond Structural is supplied in a syringe cartridge, available in 10g and 50g sizes. Both cartridges come with static mixing nozzles. The 10g size is suitable for manual application and comes with a plunger. The 50g size is used with a dispensing gun for manual application, -
Dispensing Solutions for Cyanoacrylate Adhesives White
Dispensing Solutions for Cyanoacrylate Adhesives Contents How Cyanoacrylates Work .......................................................................3 Advantages of CAs ...................................................................................4 CA Dispensing Challenges .......................................................................4 Best Practices for Dispensing CAs .....................................................5-12 Best Systems for Dispensing CAs ....................................................13-14 Useful Resources ...................................................................................15 Introduction Cyanoacrylate adhesives, also known as CAs or cyanos, are highly effective at bonding many types of materials together in assembly processes. Often referred to as super glues, they exhibit high bond strength and fast cure times that help manufacturers speed production processes for higher throughput yields. This makes them an ideal choice for assembling products in a variety of industries, including automotive, electronics, life sciences, defense, and consumer goods. Though beneficial, these moisture-cure adhesives can be a challenge, especially when your assembly process requires precise, repeatable dispensing. This paper outlines proper handling methods and dispensing solutions for successful CA dispensing. Find out how to minimize material waste by more than 60% while also minimizing operator exposure to the adhesive. Speed your production processes while producing higher quality parts with -
N-Butyl Cyanoacrylate Synthesis. a New Quality Step Using Microwaves
Molecules 2014, 19, 6220-6227; doi:10.3390/molecules19056220 OPEN ACCESS molecules ISSN 1420-3049 www.mdpi.com/journal/molecules Article n-Butyl Cyanoacrylate Synthesis. A New Quality Step Using Microwaves Yaquelin Ramos Carriles 1,*, Rubén Álvarez Brito 1, Ricardo Martínez Sánchez 2, Elayma Sánchez Acevedo 1, Paola Rodríguez Domínguez 1 and Wolf-Dieter Mueller 3 1 Chemistry-Physics Department, Faculty of Chemistry, University of Havana, Zapata and G, Vedado, Havana 10400, Cuba; E-Mails: [email protected] (R.Á.B.); [email protected] (E.S.A.); [email protected] (P.R.D.) 2 Polymers Laboratory, IMRE, University of Havana, Zapata and G, Vedado, Havana 10400, Cuba; E-Mail: [email protected] 3 Charité-Universitaetsmedizin Berlin, Assmannshauser Str.4-6, Berlin 14197, Germany; E-Mail: [email protected] * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +537-878-0684; Fax: +537-837-5774. Received: 4 April 2014; in revised form: 5 May 2014 / Accepted: 13 May 2014 / Published: 15 May 2014 Abstract: Alkyl cyanoacrylates are interesting products for use in industry because of their properties enabling them to stick together a wide range of substrates. n-Butyl cyanoacrylate is one of the most successfully used tissue adhesives in the field of medicine because it exhibits bacteriostatic and haemostatic characteristics, in addition to its adhesive properties. At present, its synthesis is performed with good yields via Knoevenagel condensation using conventional sources of heating, but this requires a long processing time. The aim of this work was to look for a new way of synthesising n-butyl cyanoacrylate using microwave irradiation as the source of heating. -
Technical Procedure for Cyanoacrylate Ester Fingerprint
Technical Procedure for Cyanoacrylate Ester Fingerprint Development Kits Version 5 Latent Evidence Section Effective Date: 02/01/2019 Issued by Latent Technical Leader Technical Procedure for Cyanoacrylate Ester Fingerprint Development Kits 1.0 Purpose – This procedure is a non-porous development procedure. 2.0 Scope – This procedure is a step in the processing of non-porous evidence that may contain impressions that require developing/enhancing. 2.1 The Cyanoacrylate Ester Fingerprint Development Kit is a commercially prepared product that polymerizes the latent impression using cyanoacrylate. Numerous materials, including plastic bags, weapons, metals, and various other substrates, may be processed using the Cyanoacrylate Ester Fingerprint Development Kit. Cyanoacrylate shall be used as a preliminary process for subsequent processing techniques. Fluorescent dye staining, in conjunction with laser examinations, is dependent on the proper use of cyanoacrylate fuming techniques. 3.0 Definitions Alternate light source: Any of the multiple forensic light sources readily available in the Latent Evidence Section including, but not limited to, the CrimeScope (CS), Mini-CrimeScope (MCS), and TracER Laser. Ambient light: Light that is readily available in the office environment (i.e., natural light or light that emanates from an office lighting source). CE: Cyanoacrylate ester, also known as super glue. Cyanoacrylate Ester Fingerprint Development Kit: A commercially prepared cyanoacrylate ester fuming kit that assists in the processing of non-porous items of evidence with the assistance of cyanoacrylate ester. Commercial products currently used include Hot-Shot by Lynn Peavey and Cyano- Shot by Sirchie. 4.0 Equipment, Materials and Reagents 4.1 Equipment and Materials Cyanoacrylate Ester Fingerprint Development Kit 4.2 Reagents – N/A 5.0 Procedure 5.1 Hot-Shot (Lynn Peavey Product): 5.1.1 Items to be processed with the Hot-Shot shall first be examined visually in ambient lighting conditions and then with the use of an alternate light source (CS, MCS). -
Supplement of Reactive Organic Carbon Emissions from Volatile Chemical Products
Supplement of Atmos. Chem. Phys., 21, 5079–5100, 2021 https://doi.org/10.5194/acp-21-5079-2021-supplement © Author(s) 2021. CC BY 4.0 License. Supplement of Reactive organic carbon emissions from volatile chemical products Karl M. Seltzer et al. Correspondence to: Havala Pye ([email protected]) The copyright of individual parts of the supplement might differ from the article licence. 15 Table S1: PUCs, sub-PUCs, NAICS codes, and SCTG codes for all sub-PUCs. Product Use Sub-Product Use SCTG NAICS Product Codesa Producer Price Index Categoryc Categories (PUCs) Categories (sub-PUCs) Codeb 3256111, 3256114, 3256117, Soap and Other Detergent Detergents & Soaps 233 325611W Manufacturing Polish and Other Sanitation Good Manufacturing; Cleaning Products 3256125, 2356127, 2356121, Soap and Other Detergent General Cleaners 233 235611A, 2356130, 325612W Manufacturing; Surface Active Agent Manufacturing; 3256204, 325620D, 325620G, Daily Use Products 232 Toilet Preparation Manufacturing 325620W, 3256207 (25%)d Personal Care Toilet Preparation Manufacturing; Products 3256201, 325620A, 325611D, Short Use Products 232 Soap and Other Detergent 3256207 (75%)d Manufacturing 3255201, 3255204, 3255207, Adhesives & Sealants Adhesives & Sealants 239 Adhesive Manufacturing 305520A, 325520W Architectural Coatings 3255101, 325510W f Paint and Coating Manufacturing Aerosol Coatings 3255107 (10%)e f Paint and Coating Manufacturing Paints & Coatings Allied Paint Products 325510B f Paint and Coating Manufacturing 3255104, Industrial Coatings f Paint and Coating Manufacturing 3255107 (90%)e 3259101, 3259104, 3259107, Printing Inks Printing Inks 325910A, 325910E, 325910H, 231 Printing Ink Manufacturing 325910W Pesticide and Other Agricultural FIFRA Pesticides 3253204, 3253207 235 Chemical Manufacturing Pesticides & FIFRA All Other Basic Organic Chemical Products Manufacturing; Pesticide and Other Agricultural Pesticides 3251994, 3253201, 325320W 235 Agricultural Chemical Manufacturing Dry Cleaning Dry Cleaning g Oil & Gas Oil & Gas Misc. -
Technical Data Sheet Permatex® Plastic & Rubber Cyanoacrylate
Unit 3 Shipton Way Technical Data Sheet Express Business Park Permatex® Plastic & Rubber Northampton Road Rushden, NN10 6GL Cyanoacrylate Adhesive. Tel: 0870 458 9686 PRODUCT DESCRIPTION PROPERTIES OF UNCURED MATERIAL Permatex Plastic & Rubber Cyanoacrylate Adhesive is a Typical Value low viscosity Ethyl Cyanoacrylate adhesive. Permatex Chemical Type Ethyl Plastic & Rubber Cyanoacrylate Adhesive is formulated for Appearance Clear high strength, high speed bonding of plastics and rubbers. Specific Gravity 1.06 Viscosity cPs¹ PRODUCT BENEFITS - range 17-22 • Fast cure speed - typical value 20 • Bonds most plastic and rubbers Tensile Strength², typical (N/mm²) 20 • Can be post applied to pre assembled parts Fixture Time (seconds) 2-20 Full Cure (hours) 24 DIRECTIONS FOR USE Flash point (ºC) >85 1. Both surfaces must be smooth, clean, dry and free of Shelf Life @ 5 ºC (months) 12 oil, grease, etc. Max Gap Fill (mm) 0.10 2. USE EXTREME CARE WHEN OPENING. Hold bottle Operating Temperature Range (ºC) -50 to +80 upright, pointing away from face. Remove nozzle. 3. Apply adhesive to one surface, about one drop per ¹ISO 3104/3105 square inch. Spread evenly. ²ISO 6922 4. Immediately place the second surface in contact with the first surface and press together. TYPICAL CURING PERFORMANCE 5. Keep light pressure on surfaces for 15 seconds or until Substrate Cure time, seconds. bond sets. DO NOT REPOSITION THE PARTS. Steel/Steel <20 6. Allow to completely harden, for best results, overnight. ABS/ABS <10 NOTE: Not suitable for untreated polyethylene or Rubber/Rubber <5 polypropylene products. Cure speed vs. substrate FOR CLEANUP The cure speed of cyanoacrylates vary according to the 1. -
Gluture Topical Tissue Adhesive Other Means of Identification Synonyms Gluture® * Topical Vet Adhesive Recommended Use Veterinary Adhesive
SAFETY DATA SHEET 1. Identification Product identifier GLUture Topical Tissue Adhesive Other means of identification Synonyms GLUture® * Topical Vet Adhesive Recommended use Veterinary Adhesive. Recommended restrictions Not for human use Manufacturer/Importer/Supplier/Distributor information Company Name (US) Zoetis Inc. 10 Sylvan Way Parsippany, New Jersey 07054 (USA) Rocky Mountain Poison 1-866-531-8896 and Drug Center Product Support/Technical 1-800-366-5288 Services Emergency telephone CHEMTREC (24 hours): 1-800-424-9300 numbers International CHEMTREC (24 hours): +1-703-527-3887 Company Name (EU) Zoetis Belgium S.A. Mercuriusstraat 20 1930 Zaventem Belgium Emergency telephone International CHEMTREC (24 hours): +1-703-527-3887 number Contact E-Mail [email protected] 2. Hazard(s) identification Physical hazards Flammable liquids Category 4 Health hazards Skin corrosion/irritation Category 2 Serious eye damage/eye irritation Category 2A Sensitization, skin Category 1 Environmental hazards Not classified. OSHA defined hazards Not classified. Label elements Signal word Warning Hazard statement Combustible liquid. Causes skin irritation. May cause an allergic skin reaction. Causes serious eye irritation. Precautionary statement Prevention Keep away from flames and hot surfaces-No smoking. Avoid breathing mist or vapor. Wash thoroughly after handling. Contaminated work clothing must not be allowed out of the workplace. Wear protective gloves/eye protection/face protection. Response If on skin: Wash with plenty of water. If skin irritation or rash occurs: Get medical advice/attention. If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention. Take off contaminated clothing and wash before reuse. -
PACE Fume Extraction Systems Are Sold with a Standard Combination Filter Already Installed
Frequently Asked questions for Fume Extraction 1. What type of filter comes with the fume extraction unit? PACE fume extraction systems are sold with a standard combination filter already installed. The standard filter is a combination pre filter, a high efficiency HEPA filter and a gas filter. 2. Can PACE fume extraction systems remove fumes generated by chemicals or adhesives? The standard combination filter comes with a gas filter layer to remove trace chemical generated in various electronic soldering applications. An optional adhesive filter is available for the Arm-Evac 50, 105, 200, and the 250. The optional adhesive filter is designed to absorb larger volumes of chemical and adhesive fumes. The adhesive filters are made with a combination of activated carbon and activated alumina impregnated with potassium permanganate. They are designed to remove fumes that are generated by glues, chemical solvents and adhesives. 3. Is there any way to estimate the life of the adhesive filter in my application? Estimating the life of an adhesive filter is very difficult. Quantifying the amount of chemical or adhesive fumes being absorbed by a system is not an easy task. The removal capacity of the filter is one way to get a rough estimate of the filters life. The adhesive filter’s removal capacity for some common chemicals is listed below. Chemical Removal Capacity Acetone 11.9% Ammonia <3% Ethyl cyanoacrylate 21.0% Formaldehyde 2.0% n-Heptane 10.0% Isopropyl Alcohol 21.0% Methyl-2-cyanoacrylate 20.0% Methyl Ethyl Ketone (MEK) 21.0% Toluene 10.0% Xylene 10.0% The percentages listed above indicate the weight of a contaminant that can be removed per pound of media in the filter. -
PERMABOND® 260 Cyanoacrylate Ref
PERMABOND ® 260 Cyanoacrylate Ref. #: 041509PB260 FEATURES & BENEFITS TYPICAL APPLICATION ¨ Instant Setting Rubber bonding ¨ Improved Gap Filling Bonding of passivated metals ¨ Faster Strength Development ¨ Improved Bonding to Difficult Surfaces ¨ High Shear Strength ¨ Easy to Apply ¨ One Part System GENERAL DESCRIPTION PERMABOND 260 is a low viscosity cyanoacrylate ideal fro wicking type application. PERMABOND 260 provides faster set times and improved gapfilling capability compared to conventional cyanoacrylates. The adhesive bonds to a wide range of substrates including metals, ceramics, plastics and elastomers. It is excellent for bonding difficulttobond plastics such as polyacetals. PHYSICAL PROPERTIES OF THE UNCURED ADHESIVE Chemical Type Ethyl Color Colorless Viscosity, cP @ 25°C 2 Specific Gravity 1.05 Flash point, °C (°F) 83 (181) Shelf Life stored at 2°C – 7°C (35°F – 45°F), months 12 Maximum gap fill; in (mm) .002 (0.05) NonWarranty: The information given and the recommendations made herein are based on our research and are believed to be accurate but no guarantee of their accuracy is made. In every case we urge and recommend that purchasers before using any product in fullscale production make their own tests to determine to their own satisfaction whether the product is of acceptable quality and is suitable for their particular purpose under their own operating conditions. THE PRODUCTS DISCLOSED HEREIN ARE SOLD WITHOUT ANY WARRANTY AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED. No representative of ours has any authority to waive or change the foregoing provisions but, subject to such provisions, our engineers are available to assist purchasers in adapting our products to their needs and to the circumstances prevailing in their business. -
Ergo.® Instant Adhesives Fast-Bonding All-Rounders Fast, Secure, Universal
ergo.® instant adhesives Fast-bonding all-rounders Fast, secure, universal Joining what belongs together, and essentially doing it independently of the substrate material: ergo.® instance adhesives achieve excellent bonding results in practically every industry, as well as for repairs and maintenance. They are even used on difficult-to-bond materials, forming high-strength bonds that are resistant to aging. ergo.® instant adhesives ensure an effortless bonding Instructions for using performance on metals, plastics, elastomers, wood, ergo.® instant adhesives plaster, stone, ceramics and many other substrates. These solvent-free, extremely fast-curing one- Cleaning – For optimum bond strength, bonded surfaces component products can be used in a wide range must be free of oil, grease and other contami- of applications, even under difficult conditions. nants. We recommend ergo.® 9195 Cleaner to prepare plastics and ergo.® 9190 Cleaner to The former instant adhesives – which were first prepare metals. developed in the 1950s – cannot be compared – Where feasible, prepare surfaces by with the products made today. These have been mechanical abrasion (sanding, grinding, systematically improved and designed to meet sandblasting, etc.). – Clean prior to mechanical treatment and new requirements. after again. In short, ergo.® fast-curing adhesives are impact- – With elastomers, freshly cut surfaces must be bonded. Remove any plasticizers or traces resistant, flexible, temperature resistant, unaffected of talc. by variations in temperature or moisture, depending Dispensing on your requirements. – Apply the adhesive to one side of the substrate (drops or continuous bead). – This can be done by applying the product Advantages directly from the original packaging or using dosage dispensers, such as dispensing tips + one-component, easy to use or dosing systems.