Golf ball core composition including dialkyl tin difatty acid
AssigneeSpalding & Evenflo Companies, Inc.
InventorsMelvin Terence, Alfred I. LaRosa
Life of this patent
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Abstract
Golf balls exhibiting an improved coefficient of restitution are obtained by the inclusion of dialkyl tin difatty acids in the core formulation.
Claims24
An improved core composition for a golf ball exhibiting a high coefficient of restitution, said composition comprising a base elastomer selected from polybutadiene and mixtures of polybutadiene with other elastomers, said polybutadiene having a molecular weight of from about 50,000 to about 500,000, from about 20 to about 50 parts by weight of at least one metallic salt of an alpha, beta ethylenically unsaturated monocarboxylic acid, from about 0.1 to about 10 parts by weight of a free radical initiator and from about 0.1 to about 10 parts by weight of a dialkyl tin difatty acid of the formula:
- ##STR2## wherein R.sub.1 and R.sub.2 are lower alkyl having from 2 to 8 carbon atoms and R.sub.3 and R.sub.4 are alkyl having from 7 to 17 carbon atoms, said parts by weight based on 100 parts of elastomer.
A golf ball exhibiting a high coefficient of restitution, said golf ball comprising a molded, spherical core and a cover therefor, said core comprising a base elastomer selected from polybutadiene and mixtures of polybutadiene with other elastomers, said polybutadiene having a molecular weight of from about 50,000 to about 500,000, from about 20 to 50 parts by weight of at least one metallic salt of an alpha, beta ethylenically unsaturated monocarboxylic acid, from about 0.1 to about 10 parts by weight of a free radical initiator and from about 0.1 to about 10 parts by weight of a dialkyl tin difatty acid of the formula:
- ##STR3## wherein R.sub.1 and R.sub.2 are lower alkyl having from 2 to 8 carbon atoms and R.sub.3 and R.sub.4 are alkyl having from 7 to 17 carbon atoms, said parts by weight based on 100 parts of elastomer.
Dependencies are inferred from the claim text.