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Optrel-Filter-Guide.Pdf
Guide to optrel filters This information is intended to provide an overview of the relevant factors that will help in the selection of a suitable fil- ter. If you lack the necessary information and/or are not sure about your choice, consult a professional first. Only with the right choice you can protect yourself from the health risks caused by pollutants in the ambient air. 1. information you need for a correct choose: • Pollutants in the ambient air • Concentration(s) of the pollutant(s) • Aggregate state(s) of the pollutant(s) (gaseous, solid, as a mixture) • Can the pollutants be detected without aids? (e.g. odor or taste) • The valid limit values e.g. AGW, OEL, ... • Oxygen content of the ambient air. There are locally different minimum concentrations apply (Germany at least 17 vol. %) • Should respiratory protection be combined with other be combined? (head, eye or hearing protection) 3. selection of the suitable filter device With the information from chapter 2, the necessary protection factor can be determined. The following chart shows the protection factor of the optrel respiratory protection equipment is listed: 2 optrel Filter Guide Device Marking Nominal protection factor Particle filtering devices e3000X in combination with TH3P 500 PAPR helmet panoramaxx se- ries, sphere series, clearmaxx series swiss air TH3P 500 e3000X in combination with TH2P 50 PAPR clearmaxx und industri- al hard hat e3000X in combination with TH1P 10 PAPR panoramaxx series and industrial hard hat Chart 1 with protection factors of optrel equipment (Germany) The NPF is derived from the maximum permissible leakage of the respective equipment. -
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. -
Proposed 15-Day Modifications
INFORMAL PRELIMINARY REVIEW DRAFT Proposed 15-Day Modifications ATTACHMENT A PROPOSED 15-DAY MODIFICATIONS California Code of Regulations, Title 17, Division 3, Chapter 1, Subchapter 7.7, Article 1 Note: This document shows proposed modifications to the originally proposed amendments to the Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants, as presented during the November 19, 2020, meeting of the California Air Resources Board. At that meeting, the Board directed staff to make modifications to the proposed amendments based on public comments received, and to provide these updates for public comment for a period of at least 15 days. The pre-existing regulation text is set forth below in normal type. The original proposed amendments are shown in underline formatting to indicate additions and strikeout to indicate deletions. The additional proposed modifications made available with the notice of public availability of modified text dated March XY, 2021, are shown in double- underline to indicate additions and double-strikeout to indicate deletions. The symbol “***” means that intervening text not proposed for amendment is not shown. PROPOSED AMENDMENTS TO THE REGULATION FOR THE REPORTING OF CRITERIA AIR POLLUTANTS AND TOXIC AIR CONTAMINANTS California Code of Regulations, Title 17, Division 3, Chapter 1, Subchapter 7.7, Articles 1 and 2 Amend Subchapter 7.7, Article 1, and sections 93400, 93401, 93402, 93403, 93404, 93405, 93406, 93407, 93408, 93409, 93410, title 17, California Code of Regulations, and adopt new Subchapter 7.7, Article 2, sections 93420, 93421, and new Subchapter 7.7, Article 2, Appendices A and B to title 17, California Code of Regulations, to read as follows: CARB / AQPSD 1 2/11/2021 INFORMAL PRELIMINARY REVIEW DRAFT Proposed 15-Day Modifications Subchapter 7.7: Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants Article 1. -
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 -
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. -
The Pennsylvania State University the Graduate School College Of
The Pennsylvania State University The Graduate School College of Engineering NOVEL TEMPLATE-LESS SYNTHESIS OF POLYCYANOACRYLATE NANOFIBERS A Thesis in Chemical Engineering by Pratik Mankidy 2007 Pratik Mankidy Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy December 2007 The thesis of Pratik Mankidy was reviewed and approved* by the following: Henry C. Foley Professor of Chemical Engineering Thesis Advisor Chair of Committee Carlo G. Pantano Distinguished Professor of Materials Science and Engineering Janna K. Maranas Associate Professor of Chemical Engineering Andrew L. Zydney Walter L. Robb Chair Professor of Chemical Engineering Head of the Department of Chemical Engineering *Signatures are on file in the Graduate School iii ABSTRACT Polymer nanofibers are 1D nanostructures that are gathering significant interest because of their potential applications in a wide variety of fields such as biomedicine, separation, electronics and sensor materials. They are also fascinating structures because in some cases they posses unique properties arising from the preferential arrangement of the polymer chains parallel to the fibers axes. Challenges that synthesis techniques for polymer nanofibers face are scalability and control during fabrication. An alternate to current common approaches such as electrospinning and templated-synthesis of polymer nanofibers, is template-less synthesis of polymer nanofibers during polymerization. This approach offers the advantage of bottom-up fabrication and the potential for large scale synthesis. Herein results from an investigation using this approach for poly (ethyl 2- cyanoacrylate) [PECA] nanofiber formation are reported. The template-less growth of PECA nanofibers is first demonstrated using the initiators present in human fingerprint residue via vapor phase polymerization of the monomer under conditions of high humidity. -
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. -
Nomination Background: Ethyl Cyanoacrylate (CASRN: 7085-85-0)
i' ETHYL CYANOACRYLATE CAS Number: 7085-85-0 NTP Nomination History and Review NCI summary of·oata for Chemical Selection Ethyl cyanoacrylate 7085-85-0 NTP NOMINATION HISTORY AND REVIEW A. Nomination History 1. Source: National Cancer Institute 2. Reco~endation: -Carcinogenicity (Inhalation) -Neurotoxicity -Reproductive and developmental effects 3. Rationale/Remarks: -Widespread use as a consumer instant adhesive -Lack of toxicity data -Potential biological activity 4. Priority: High 5. Date of Nomination: 5/91 B. Chemical Evaluation Committee Review 1. Date of Review: 2. Recommendations: 3. Priority: 4. NTP Chemical Selection Principles: 5. Rationale/Remarks: c. Board of Scientific Counselors Review 1. Date of Review: 2. Recommendations: 3. Priority: 4. Rationale/Remarks: D. Executive Committee Review 1. Date of Review: 2. Decision: . \ ,. 7085-85-0 Ethyl cyanoacrylate SUMMARY OF DATA FOR CHEMICAL SELECTION CHEMICAL IDENTIFICATION CAS Registry Number: 7085-85-0 Chern. Abstr. Name: 2-Cyano-2-propenoic acid, ethyl ester Synonyms & Trade Names: 910EM; ACE-EE; ACE-E SO; acrylic acid, 2-cyano-, ethyl ester; adhesive 502; Aron Alpha D; Black Max; CA 3; CA 3 (adhesive); CA 8-3A; CN 2; CN 4; Cemedine 3000RP; Cemedine 3000RP Type-II; Cemedine 3000RS; Cemedine 3000RS Type-11; Cyanobond W 100; Cyanobond W 300; Cyanolite 20 1; Cyan on 5MSP; DA 737S; ethyl Q-cyanoacrylate; ethyl 2-cyanoacrylate; Krazy Glue; N 135; Permabond 105; Permabond 200; Permabond 268; Pro Grip 4000; PTR-E 3; PTR-E 40; Super 3-1000; Superbonder 420; Super Glue; TK. 200; TK 201 Structure. Molecular Formula and Molecular Weight Mol. wt.: 125.13 Chemical and Physical Properties [From Coover eta/. -
(12) United States Patent (10) Patent No.: US 6,995,227 B2 Ryan Et Al
USOO6995227B2 (12) United States Patent (10) Patent No.: US 6,995,227 B2 Ryan et al. (45) Date of Patent: Feb. 7, 2006 (54) ACTIVATOR COMPOSITIONS FOR 3,654,340 A 4/1972 Banitt ..................... 260/465.4 CYANOACRYLATE ADHESIVES 3,836,377 A * 9/1974 Delahunty .................. 526/205 3.869.435 A * 3/1975 Trivette, Jr. ....... ... 525/341 (75) Inventors: Bernard Ryan, Dublin (IE); Hanns 3.2Y- - - 2 A 3.E. GSINCOC Sh alC a I... i. Botanis pit 8.is A. 5,314,562 A 5/1994 McDonnell et al. ........ 156/314 McCann, s Dublin (IE) s 5,749.956. A 5/1998 Fisher et al............ 106/287.28 FOREIGN PATENT DOCUMENTS (73) Assignee: Loctite R&D Limited, Dublin (IE) DE 278O33 4/1990 * Y NotOtice: Subjubject to anyy disclaimer,disclai theh term off thisthi EP O 151521 A2 1/1985 patent is extended or adjusted under 35 EP O 259 O16 A1 8/1987 EP O 271 675 A2 10/1987 U.S.C. 154(b) by 0 days. GB 123O 560 A 5/1971 (21) Appl. No.: 10/276,287 JP 62 O18485 4/1987 WO WO 82/0O829 3/1982 (22) PCT Filed: May 11, 2001 WO WO 83/02450 7/1983 WO WO OO/39229 7/2000 (86) PCT No.: PCT/IE01/00063 S371 (c)(1), * cited by examiner (2), (4) Date: Mar. 31, 2003 Primary Examiner William K. Cheung (87) PCT Pub. No.: WO01/85861 (74) Attorney, Agent, or Firm-Steven C. Bauman PCT Pub. Date: Nov. 15, 2001 (57) ABSTRACT (65) Prior Publication Data An activator composition for the accelerated hardening of cyanoacrylate adhesives, wherein the activator comprises a US 2003/0191248 A1 Oct. -
Reactive Polymers Fundamentals and Applications
Propery of Reed Elsevier 13 Cyanoacrylates Cyanoacrylates were commercially introduced in for polymerization. Instead of aqueous formaldehyde, 1950 by Tennesee Eastman Company. Cyanoacrylate paraformaldehyde was used with an organic solvent to adhesives are monomeric adhesives. They are gener- remove the water by azeotropic distillation. The sta- ally quick-setting materials which cure to clear, hard bility of the monomer can be enhanced by the redistil- glassy resins, useful as sealants, coatings, and par- lation of the crude monomer in the presence of small ticularly adhesives for bonding together a variety of quantities of acidic stabilizers, e.g., sulfur dioxide. substrates [1]. Polymers of alkyl 2-cyanoacrylates are Several other methods for cyanoacrylate monomer also known as superglues. production have been described, including the pyro- In addition to their use as adhesives, cyanoacrylates lysis of 3-alkoxy-2-cyanopropionates [8], transester- have been reported to have highly herbicidal prop- ification of ethyl cyanoacrylate [9], and displacement erties, as they disrupt photosynthetic electron trans- of cyanoacrylate monomer from its anthracene Diels- portation [2–4]. Alder adduct by treatment with maleic anhydride. This last method is used for the synthesis of monomers 13.1 Monomers that are not accessible or may be difficult to prepare by the retropolymerization route, for example difunc- 13.1.1 Synthesis tional cyanoacrylates [10], thiocyanoacrylates [11], and perfluorinated monomers. In 1895 von Auwers and Thorpe [5] attempted to synthesize diethyl-2,2-dicyanoglutarate (Figure 13.1) by base-catalyzed condensation of aqueous formalde- 13.1.2 Crosslinkers hyde and ethyl cyanoacetate. They isolated a mixture To improve the cohesive strength, difunctional mono- of oily oligomers and an amorphous polymer of higher meric crosslinking agents may be added to the mono- molecular weight. -
Attachment A
Attachment A Proposed 15-Day Modifications California Code of Regulations, Title 17, Division 3, Chapter 1, Subchapter 7.7, Article 1 Note: This document shows proposed modifications to the originally proposed amendments to the Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants, as presented during the November 19, 2020, meeting of the California Air Resources Board. At that meeting, the Board directed staff to make modifications to the proposed amendments based on public comments received, and to provide these updates for public comment for a period of at least 15 days. The pre-existing regulation text is set forth below in normal type. The original proposed amendments are shown in underline formatting to indicate additions and strikeout to indicate deletions. The additional proposed modifications made available with the notice of public availability of modified text dated March XY, 2021, are shown in double- underline to indicate additions and double-strikethrough to indicate deletions. The symbol “***” means that intervening text not proposed for amendment is not shown. Proposed Amendments to the Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants California Code of Regulations, Title 17, Division 3, Chapter 1, Subchapter 7.7, Articles 1 and 2 Amend Subchapter 7.7, Article 1, and sections 93400, 93401, 93402, 93403, 93404, 93405, 93406, 93407, 93408, 93409, 93410, title 17, California Code of Regulations, and adopt new Subchapter 7.7, Article 2, sections 93420, 93421, and new Subchapter 7.7, Article 2, Appendices A and B to title 17, California Code of Regulations, to read as follows: Subchapter 7.7: Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants Article 1. -
Permabond ® 910Fs
PERMABOND ®9 10FS Methyl Cyanoacrylate Ref. #: 041509PB910FS FEATURES & BENEFITS TYPICAL APPLICATIONS Fast setting and fixturing of parts Metal bonding Rapid development at high strength Sensitive plastic parts Ease of uses ingle part no mixing Name plates Excellent adhesion to metal surface Or ings Parts before riveting or welding GENERAL DESCRIPTION PERMABOND 910FS is the original 100%m ethyl cyanoacrylate adhesive. It is a single part, low viscosity liquid that will cure rapidly at room temperature when pressed into a thin film between parts. PERMABOND 910FS will cure to a fixture strength in 5 seconds on most surfaces, and rapidly develops high strength with full cure obtained in 4 hours. The adhesive was designed specifically for the bonding of metal surfaces, and provides excellent bond strength to steel, aluminum, and most metal surfaces. The methyl cyanoacrylate will also adhere well to a wide variety of other materials including most plastics and rubbers. PERMABOND 910FS has been formulated to be less aggressive to sensitive plastic surfaces such as Styrofoam, polycarbonate and ABS. The cured adhesive is an inert plastic that is resistant to most chemicals. The cured 910 adhesive will also have a greater resistance to high temperatures than most conventional ethyl cyanoacrylate adhesives. PHYSICAL PROPERTIES OF THE UNCURED ADHESIVE Chemical Type Methyl Color Colorless Viscosity, cP @ 25C 3 Specific Gravity 1.09 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) Non Warranty: 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.