Golf ball

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C525S274000, C473S371000, C473S372000

Reexamination Certificate

active

10929423

ABSTRACT:
A golf ball which is formed from a vulcanized rubber compound composed of 100 parts by weight of a rubber base material, 10 to 60 parts by weight of an unsaturated carboxylic acid and/or a metal salt thereof, 0.1 to 5 parts by weight of an organosulfur compound, 5 to 80 parts by weight of an inorganic filler, and 0.1 to 3 parts by weight of an organic peroxide, the rubber base material being composed of a first polybutadiene accounting for 50 to 95 wt % and a second polybutadiene accounting for 5 to 50 wt %, both polybutadiene being synthesized by using a rare earth element-based catalyst, the first polybutadiene containing no less than 60 wt % of cis-1,4 bonds and having a Mooney viscosity (ML1+4(100° C.)) no lower than 50 and the second polybutadiene containing no less than 60 wt % of cis-1,4 bonds and having a Mooney viscosity (ML1+4(100° C.)) no higher than 45. The golf ball is characterized by good rebound resilience and good workability with which it is produced.

REFERENCES:
patent: 4546980 (1985-10-01), Gendreau et al.
patent: 4683257 (1987-07-01), Kakiuchi et al.
patent: 4770422 (1988-09-01), Isaac
patent: 4929678 (1990-05-01), Hamada et al.
patent: 4955613 (1990-09-01), Gendreau et al.
patent: 5082285 (1992-01-01), Hamada et al.
patent: 6194505 (2001-02-01), Sone et al.
patent: 6312346 (2001-11-01), Sugimoto
patent: 2002/0052254 (2002-05-01), Ichikawa et al.
patent: 2003/0125450 (2003-07-01), Fujisawa et al.
patent: 2003/0207999 (2003-11-01), Higuchi et al.
patent: 61-71070 (1986-04-01), None
patent: 62-89750 (1987-04-01), None
patent: 62-112574 (1987-05-01), None
patent: 63-275356 (1988-11-01), None
patent: 2-268778 (1990-11-01), None
patent: 3-151985 (1991-06-01), None
patent: 7-268132 (1995-10-01), None
patent: 11-35633 (1999-02-01), None
patent: 11-70187 (1999-03-01), None
patent: 11-164912 (1999-06-01), None
patent: 11-319148 (1999-11-01), None
patent: 2001-149505 (2001-06-01), None
patent: 2001-149507 (2001-06-01), None
patent: 2002-293996 (2002-10-01), None
patent: 2004180733 (2004-07-01), None
Mark R. Mason et al.; “Hydrolysis of Tri-tert-butylaluminum: The First Structural Characterization of Alkylalunoxanes [(R2Al)2O]nand (RAIO)n”; J. Am. Chem. Soc. 1993, 115; pp. 4971-4984.
C. Jeff Harlan; “Three-Coordinate Aluminum is Not a Prerequisite for Catalytic Activity in the Zirconocene—Alumoxane Polymerization of Ethylene”; J. Am. Chem. Soc. 1995, E, 117; pp. 6465-6474.
“Reaction Mechanisms in Metallocene Catalyzed Olefin Polymerization”; Report of Research & Development, vol. 23, No. 9; 1994; pp. 5-15.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Golf ball does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Golf ball, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Golf ball will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3747477

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.