Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2006-11-14
2006-11-14
Yoon, Tae H. (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S399000, C524S490000, C523S351000
Reexamination Certificate
active
07135514
ABSTRACT:
The present invention provides a method and product that provides a dust-free homogeneous dispersion of zinc diacrylate in polybutadiene for use in golf balls. More specifically, the invention relates to a dispersion of zinc diacrylate in a special high-cis grade of polybutadiene commonly used by golf ball manufacturers. We have found that such a dispersion of ZDA can be made by using specific processing promoters, which not only allow the manufacture of the predispersion, but have a beneficial effect on the final properties of the golf ball. The processing promoters of the present invention enable more uniform dispersion of the ZDA into the polymer matrix, eliminate sticking to the mixer rotors, provide improved extrusion and pelletizing rates, as well as function as a separant to greatly minimize, if not totally eliminate, massing of the pelletized product. This dust-free pelletized product, which can optionally be supplied in slab form, is then sold to the golf ball manufacturer for direct addition to his mixer. The presence of the processing promoter also assists in the mixing of the product into the final golf ball compound as well as improve down-stream processing, such as extruding.
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Rhein Chemie Corporation
Seng Jennifer R.
Yoon Tae H.
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