Processing zinc diacrylate dispersed in high-cis polybutadiene
AssigneeRhein Chemie Corporation
InventorLeo C. Goss, JR.
Life of this patent
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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 in which a first and a second processing promoters are used in the production of the dispersion and incorporated into the dispersions, such first processing promoters including low molecular weight polyethylene, fatty acids, and zinc salts of fatty acids and such second processing promoters being metal oxides including zinc oxide, magnesium oxide, and calcium oxide.
Claims26
A rubber dispersion composition comprising:
- from about 12 to 50 parts by weight of a polybutadiene;
- from about 50 to 85 parts by weight of zinc diacrylate;
- from about 0.5 to 5 parts by weight of a first processing promoter selected from the group consisting of low molecular weight polyethylene, fatty acids, zinc salts of fatty acids and mixtures thereof;
- and
- from about 0.5 to 5 parts by weight of a second processing promoter which is a metal oxide,
- all parts by weight being based on the total weight of said dispersion.
A process for making a rubber dispersion comprising the steps of:
- mixing
- i) from about 12 to 50 parts by weight of a polybutadiene;
- ii) from about 50 to 85 parts by weight of zinc diacrylate;
- iii) from about 0.5 to 5 parts by weight of a first processing promoter selected from the group consisting of low molecular weight polyethylene, fatty acids, zinc salts of fatty acids and mixtures thereof;
- and
- iv) from about 0.5 to 5 parts by weight of a second processing promoter which is a metal oxide;
- thereby forming a mixture,
- where all parts by weight being based on the total weight of said dispersion;
- and
- extruding said mixture thereby forming an extruded mixture;
- and
- pelletizing or slabbing said extruded mixture.
Dependencies are inferred from the claim text.