Golf ball and method of manufacture

Details Golf ball and method of manufacture Golf ball and method of manufacture

2005-11-03

2009-06-23

Buttner, David (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S130000, C473S373000, C473S374000, C473S378000

Reexamination Certificate

active

07550535

ABSTRACT:
In a golf ball composed of a core and a cover having a plurality of layers that encloses the core, at least a first layer of the cover is formed primarily of a heated mixture of (A) a metal ion neutralization product of an olefin-unsaturated carboxylic acid copolymer and/or a metal ion neutralization product of an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester copolymer, (B) at least one type of olefin-unsaturated carboxylic acid copolymer and/or olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester copolymer having the same content of unsaturated carboxylic acid as component A, and (C) a thermoplastic polyurethane elastomer; and at least one other cover layer adjoining the at least first cover layer is formed primarily of a non-ionomeric thermoplastic elastomer. Because the golf ball is made using a cover stock having a good heat resistance, good moldability, good paint film adhesion and good adhesion to adjoining layers, it has an excellent rebound, an excellent feel when hit, and is more resistant to a decline in durability to impact.

REFERENCES:
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patent: 6822028 (2004-11-01), Takesue et al.
patent: 2002/0099120 (2002-07-01), Takesue et al.
patent: 2004/0106471 (2004-06-01), Hayashi et al.

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