Cover composition for golf ball

Details Cover composition for golf ball Cover composition for golf ball

2007-04-24

2007-04-24

Buttner, David J. (Department: 1712)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S497000, C524S589000, C524S590000, C524S847000, C524S874000, C473S378000

Reexamination Certificate

active

11017917

ABSTRACT:
A cover composition for a golf ball includes: an isocyanate group-terminated urethane prepolymer containing an isocyanate component derived from at least one diisocyanate selected from the group consisting of 4,4′-dicyclohexylmethane diisocyanate, isophorone diisocyanate, and cyclohexane diisocyanate; an aromatic polyamine; a light stabilizer; and a titanium oxide applied with a surface treatment capable of suppressing photocatalytic action of the titanium oxide, wherein the cover composition contains 3 to 8 parts by mass of the surface-treated titanium oxide relative to 100 parts by mass of the urethane prepolymer. The golf ball having the cover composition has superior resistance against discoloration or degradation with time, namely, superior weatherability.

REFERENCES:
patent: 2002/0086743 (2002-07-01), Bulpett et al.
patent: 2003/0232934 (2003-12-01), Yokota
patent: 2004/0018895 (2004-01-01), Bulpett et al.
patent: 2005/0192122 (2005-09-01), Isogawa et al.
patent: 2002-159596 (2002-06-01), None

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