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(12) United States Patent (10) Patent No.: US 9,409,057 B2 Sullivan Et Al

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(12) United States Patent (10) Patent No.: US 9,409,057 B2 Sullivan Et Al USOO9409057B2 (12) United States Patent (10) Patent No.: US 9,409,057 B2 Sullivan et al. (45) Date of Patent: *Aug. 9, 2016 (54) BLENDS OF POLYAMIDE AND ACID (56) References Cited ANHYDRDE-MODIFIED POLYOLEFNS FOR USE IN GOLF BALLS U.S. PATENT DOCUMENTS 5,703,166 A 12/1997 Rajagopalan et al. (71) Applicant: Acushnet Company, Fairhaven, MA 5,820,486 A * 10/1998 Tanaka et al. ................. 473,374 (US) 5,824,746 A 10, 1998 Harris et al. 5,981,658 A 11/1999 Rajagopalan et al. 6,150,462 A 11/2000 Rajagopalan et al. (72) Inventors: Michael J. Sullivan, Old Lyme, CT 6,274,669 B1 8/2001 Rajagopalan (US); David A. Bulpett, Boston, MA 6,376,037 B1 4/2002 Montanarietal. (US); Robert Blink, Newport, RI (US); 6,476,130 B1 1 1/2002 Rajagopalan et al. Mark L. Binette, Mattapoisett, MA 6,528,560 B2 3, 2003 Bihler 6,538,099 B2 * 3/2003 Isobe et al. .................... 528,310 (US); Brian Comeau, Berkley, MA (US) 6,562906 B2 5, 2003 Chen 6,756,436 B2 6/2004 Rajagopalan et al. (73) Assignee: Acushnet Company, Fairhaven, MA 6,774,184 B2 8/2004 Rajagopalan et al. (US) 6,800,690 B2 10/2004 Rajagopalan et al. 6,831,137 B2 12/2004 Torre et al. 6,833,400 B2 12/2004 Ichikawa et al. (*) Notice: Subject to any disclaimer, the term of this 6,872,774 B2 3/2005 Sullivan et al. patent is extended or adjusted under 35 6,943,231 B2 9, 2005 Buhler U.S.C. 154(b) by 0 days. 7,045,185 B2 5/2006 Jacques et al. 7,297,737 B2 11/2007 Fish, Jr. et al. This patent is Subject to a terminal dis 7,348,046 B2 3/2008 Liedloff et al. claimer. 7,528, 196 B2 5/2009 Kim et al. 8,309,643 B2 11/2012 Thullen et al. 8,399,557 B2 3/2013 Montanarietal. (21) Appl. No.: 14/285,871 8,507,598 B2 8, 2013 Buler et al. 2001, 0046906 A1 11/2001 Rajagopalan et al. (22) Filed: May 23, 2014 2004/OOO9831 A1* 1/2004 Ohama et al. ................. 473,378 2006.0035724 A1* 2, 2006 Watanabe ...... 473,371 2006/0166761 A1* 7/2006 Kim et al. ..................... 473,371 (65) Prior Publication Data 2006/0252577 A1* 11 2006 Sullivan ............. A63B 37.0003 US 2014/O256472 A1 Sep. 11, 2014 473,354 2009/0170634 A1* 7/2009 Loper ............. A63B 37,0003 473,373 2010, 0160079 A1 6, 2010 Kim et al. Related U.S. Application Data 2010, 0160082 A1 6/2010 Rajagopalan et al. 2010.0167845 A1 7/2010 Kim et al. (63) Continuation-in-part of application No. 13/451,671, filed on Apr. 20, 2012, now Pat. No. 9,119,992. (Continued) OTHER PUBLICATIONS (51) Int. Cl. A63B 37/00 (2006.01) ARKEMA product brochure “Les Polyamides Transparents' Mar. COSL 77/00 (2006.01) 2012: pp. 1-30.* COSL 77/02 (2006.01) ChemSystems PERP 08/09S12 of Styrene Block Copolymers, Feb. COSL 77/06 (2006.01) 2010, pp. 1-4.* A63B 45/OO (2006.01) DOW “Amplity GR Functional Polymers” (Aug. 2010) The Dow Chemical Company. COSR 5/OO (2006.01) http:/www.tech-white-papers.com/ (Feb. 17, 2010) DuPont Polymer (52) U.S. Cl. Modifiers, “Polyamide Toughening Using DuPont Polymer Modifi CPC ......... A63B 37/0051 (2013.01); A63B 37/0003 s (2013.01); A63B 37/0024 (2013.01); A63B S. 37/0033 (2013.01); A63B 37/0039 (2013.01); Primary Examiner — David Buttner A63B 37/0044 (2013.01); A63B 37/0062 (74) Attorney, Agent, or Firm — Daniel W. Sullivan (2013.01); A63B 37/0063 (2013.01); A63B (57) ABSTRACT 37/0075 (2013.01); A63B 37/0076 (2013.01); Multi-layered golf balls having at least one layer made of A63B 37/0086 (2013.01); A63B 37/0092 polyamide/acid anhydride-modified polyolefin blended com (2013.01); C08L 77/02 (2013.01); C08L 77/06 positions are provided. Preferably, a transparent polyamide is (2013.01); A63B 37/0043 (2013.01); A63B used. In one version, the composition comprises a blend of 37/0045 (2013.01); A63B37/0046 (2013.01); polyamide, acid anhydride-modified polyolefin, and plasti A63B 37/0049 (2013.01); A63B 37/0061 cizer. The golfball includes a core having at least one layer (2013.01); A63B 37/0065 (2013.01); A63B and a cover having at least one layer. The polyamide/acid 37/0069 (2013.01); A63B37/0078 (2013.01); anhydride-modified polyolefin composition may be used to A63B 37/0095 (2013.01); A63B 45/00 form any core, cover, or other layer in the golf ball. In one (2013.01); A63B 2.209/00 (2013.01); C08K version, the polyamide/acid anhydride-modified polyolefin 5/0016 (2013.01) composition is used to form the outer core layer, and a rubber (58) Field of Classification Search composition is used to form the inner core. None See application file for complete search history. 12 Claims, 2 Drawing Sheets US 9,409,057 B2 Page 2 (56) References Cited 2013/0202831 A1 8/2013 Chihun et al. 2013,0247983 A1 9/2013 Jousset et al. U.S. PATENT DOCUMENTS 2013/0281233 A1* 10/2013 Sullivan et al. ............... 473,373 2014/0302947 A1* 10/2014 Sullivan et al. ............... 473,374 2010, 0183837 A1 7, 2010 Hochstetter et al. 2014/0323243 A1* 10/2014 Sullivan et al. ............... 473,374 2010/02O3275 A1 8, 2010 Hoffmann et al. 2011 O152450 A1 6/2011 Kobayashi et al. 2012/0223453 A1 9, 2012 Grimes et al. * cited by examiner U.S. Patent Aug. 9, 2016 Sheet 1 of 2 US 9,409,057 B2 FIG. 1 FIG. 2 U.S. Patent Aug. 9, 2016 Sheet 2 of 2 US 9,409,057 B2 3es/ygal (DOO US 9,409,057 B2 1. 2 BLENDS OF POLYAMIDE AND ACID al, US Patent Application Publication US 2010/0167845 dis ANHYDRDE-MODIFIED POLYOLEFINS closes golfballs having a core, at least one intermediate layer, FOR USE IN GOLF BALLS and at least one cover layer prepared from blends of polya mides with functional polymer modifiers of the polyamide. CROSS-REFERENCE TO RELATED The functional modifier of the polyamide can include C-ole APPLICATIONS fin copolymers or terpolymers having a glycidyl group, hydroxyl group, maleic anhydride group, or carboxylic This application is a continuation-in-part of co-assigned group. The polyamide composition is preferably blended U.S. patent application Ser. No. 13/451,671 having a filing with a polyalkenamer rubber/functionalized organic modifier date of Apr. 20, 2012 now U.S. Pat. No. 9,119,992, the entire 10 material. disclosure of which is hereby incorporated herein by refer Sullivan et al., U.S. Pat. No. 6,872,774 discloses a multi CCC. layered golfball having a core, intermediate layer, and cover. The intermediate layer is made of a composition comprising BACKGROUND OF THE INVENTION a non-ionomeric acid polymer and non-ionomeric stiffening 15 polymer including blends of polyamides and polypropylene 1. Field of the Invention and polyethylene copolymers that have been grafted with The present invention generally relates to multi-layered maleic anhydride or Sulfonate groups. golf balls and more particularly to golf balls having at least In Rajagopalan et al., U.S. Pat. No. 6,800,690 golf balls one layer made of polyamide/acid anhydride-modified poly having at least one layer formed from a composition compris olefin compositions. The golf ball includes a core having at ing a polyamide and non-ionomeric material including least one layer and a cover having at least one layer. The grafted or non-grafted metallocene-catalyzed olefinic poly polyamide/acid anhydride-modified polyolefin composition mers such as polyethylene and copolymers of ethylene are may be used to formany core, cover, or other layer in the golf disclosed. The olefinic polymers may also contain functional ball. In one version, the composition comprises a blend of groups such as epoxy, anhydride, amine, oxazoline, Sulfonic polyamide, acid anhydride-modified polyolefin, and plasti 25 acid, carboxylic acid, and their salts. cizer. Although some non-ionomeric compositions containing 2. Brief Review of the Related Art polyamides as mentioned above may be somewhat effective Multi-layered, solid golf balls are used today by recre for making certain components and layers in a golfball, there ational and professional golfers. Basically, these golf balls is still a need for new compositions that can impart high contain an inner core protected by a cover. The core acts as the 30 quality performance properties to the ball. Particularly, there primary engine for the ball and the cover helps provide the is a continuing need for improved core constructions in golf ball with durability and wear-resistance. The core and cover balls. The core material should have good toughness and may be single or multi-layered. For example, three-piece golf provide the ball with high resiliency. The core material, how balls having an inner core, inner cover layer, and outer cover ever, should not be excessively hard and stiff so that proper layer are popular. In other instances, golfers will use a four 35 ties such as feel, softness, and spin control are sacrificed. The piece ball containing a dual-core (inner core and Surrounding present invention provides golf balls having an optimum outer-core layer) and dual-cover (inner cover layer and Sur combination of properties. rounding outer cover layer). Intermediate (casing) layer(s) may be disposed between the core and cover layers to impart SUMMARY OF THE INVENTION various properties. Thus, five-piece and even six-piece balls 40 can be made.
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