The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2009
Filed:
Jul. 27, 2007
Jun Shindo, Chichibu, JP;
Eiji Takehana, Chichibu, JP;
Kae Yamazaki, Chichibu, JP;
Bridgestone Sports Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a polymer composition which includes (A) an olefin-unsaturated carboxylic acid random copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, (D) a metal ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer and/or a metal ion neutralization product of an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, or both components A and D, and also includes a specific amount of (B) a metal oxide which is capable of neutralizing acid groups in components A and/or D, and which is produced by plasma synthesis, laser synthesis or flame synthesis and has an average particle diameter of at most 200 nm. The invention also provides golf balls in which such a polymer composition serves as a component of the ball. The polymer composition is ionically bonded and has an excellent resilience. Golf balls made using the polymer composition have an outstanding rebound.