US2007225087A1PendingUtilityA1

Low-resilience limited flight golf ball

49
Assignee: WILSON SPORTING GOODSPriority: Mar 24, 2006Filed: Mar 24, 2006Published: Sep 27, 2007
Est. expiryMar 24, 2026(expired)· nominal 20-yr term from priority
Inventors:Frank M. Simonutti
A63B 37/005A63B 37/0003A63B 2043/001C08K 3/013A63B 37/0087C08L 9/00A63B 37/0078C08L 9/02C08K 5/14
49
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Claims

Abstract

A limited distance golf ball includes a core and at least one cover layer. The core includes a blend of high-cis polybutadiene and either acrylonitrile-1,3-butadiene or isobutylene-isoprene copolymer or a combination thereof. The limited distance golf ball has a coefficient of restitution (C.O.R.) of less than 0.710 at a test velocity of 125 ft/s, and/or less than 0.660 at a test velocity of 175 ft/s.

Claims

exact text as granted — not AI-modified
1 . A limited distance golf ball comprising a core and at least one cover layer, wherein the core includes a blend of: 
 20-80 phr of the high-cis polybutadiene;    80-20 phr by weight of acrylonitrile-1,3-butadiene;    20-40 phr of a co-crosslinking agent;    0-10 phr of an activator;    10-30 phr of an inert filler; and    0.5 to 3 phr of a free-radical initiator.    
   
   
       2 . The golf ball of  claim 1 , wherein the high-cis polybutadiene has a cis-1,4 content greater than 94%.  
   
   
       3 . The golf ball of  claim 1 , wherein the acrylonitrile-1,3-butadiene has an acrylonitrile content greater than 25%.  
   
   
       4 . The golf ball of  claim 1 , wherein the acrylonitrile-1,3-butadiene has an acrylonitrile content of 30-40%.  
   
   
       5 . The golf ball of  claim 1 , wherein the acrylonitrile-1,3-butadiene has an acrylonitrile content of 30-36%.  
   
   
       6 . The golf ball of  claim 1 , wherein the free-radical initiator comprises a peroxide.  
   
   
       7 . The golf ball of  claim 6 , wherein the peroxide is selected from the group consisting of dicumyl peroxide, tert-butyl peroxybenzoate, butyl 4,4′-di-(tert-butylperoxy) valerate, and 1,1-di-(tert-butylperoxy)-3,3,5-trimethylcyclohexane.  
   
   
       8 . The golf ball of  claim 1 , wherein the at least one cover layer comprises a material selected from the group consisting of: ionomers, polyurethanes, polyesters, polyolefins, ethylene-methacrylic acid copolymers, ethylene-acrylic acid copolymers, and mixtures thereof.  
   
   
       9 . The golf ball of  claim 1 , wherein the at least one cover layer includes a conventional dimple pattern.  
   
   
       10 . The golf ball of  claim 1 , wherein the golf ball core has a C.O.R. of less than 0.710 at a test velocity of 125 ft/s.  
   
   
       11 . The golf ball of  claim 1 , wherein the golf ball core has a C.O.R. of less than 0.660 at a test velocity of 125 ft/s.  
   
   
       12 . The golf ball of  claim 1 , wherein the golf ball has a deflection of between 0.065 and 0.130 inch under a 200 lb. static load.  
   
   
       13 . A limited distance golf ball comprising: 
 a core and at least one cover layer, wherein the core includes a blend of high-cis polybutadiene and acrylonitrile-1,3-butadiene, and the core has a C.O.R. of less than 0.710 at a test velocity of 125 ft/s.    
   
   
       14 . The golf ball of  claim 13 , wherein the high-cis polybutadiene has a cis-1,4 content greater than 94%.  
   
   
       15 . The golf ball of  claim 13 , wherein the acrylonitrile-1,3-butadiene has an acrylonitrile content greater than 25%.  
   
   
       16 . The golf ball of  claim 13 , wherein the acrylonitrile-1,3-butadiene has an acrylonitrile content of 30-40%.  
   
   
       17 . The golf ball of  claim 13 , wherein the acrylonitrile-1,3-butadiene has an acrylonitrile content of 30-36%.  
   
   
       18 . The golf ball of  claim 13 , wherein the core further comprises an isobutylene-isoprene copolymer blended with the high-cis polybutadiene and the acrylonitrile-1,3-butadiene.  
   
   
       19 . The golf ball of  claim 13 , wherein the core further comprises a peroxide.  
   
   
       20 . The golf ball of  claim 19 , wherein the peroxide is selected from the group consisting of dicumyl peroxide, tert-butyl peroxybenzoate, butyl 4,4′-di-(tert-butylperoxy) valerate, and 1,1-di-(tert-butylperoxy)-3,3,5-trimethylcyclohexane.  
   
   
       21 . The golf ball of  claim 13 , wherein the at least one cover layer comprises a material selected from the group consisting of: ionomers, polyurethanes, polyesters, polyolefins, ethylene-methacrylic acid copolymers, ethylene-acrylic acid copolymers, and mixtures thereof.  
   
   
       22 . The golf ball of  claim 13 , wherein the at least one cover layer includes a conventional dimple pattern.  
   
   
       23 . The golf ball of  claim 13 , wherein the core of the limited distance golf ball has a C.O.R. of less than 0.660 at a test velocity of 125 ft/s.  
   
   
       24 . A limited distance golf ball comprising a core and at least one cover layer, wherein the core includes a blend of: 
 20-80 phr of the high-cis polybutadiene;    80-20 phr by weight of an isobutylene-isoprene copolymer;    20-40 phr of a co-crosslinking agent;    0-10 phr of an activator;    10-30 phr of an inert filler; and    0.5 to 3 phr of a free-radical initiator.    
   
   
       25 . The golf ball of  claim 24 , wherein the isobutylene-isoprene copolymer has a chlorine content of 1-2%.  
   
   
       26 . The golf ball of  claim 24 , wherein the at least one cover layer includes a conventional dimple pattern.  
   
   
       27 . The golf ball of  claim 24 , wherein the golf ball core has a C.O.R. of less than 0.710 at a test velocity of 125 ft/s.  
   
   
       28 . The golf ball of  claim 24 , wherein the golf ball core has a C.O.R. of less than 0.660 at a test velocity of 125 ft/s.

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