Back to results
US 4,377,655 AGranted
Dull, smooth unit soles
AssigneeShell Oil Company
InventorGlenn R. Himes
Life of this patent
Estimating the term…
Abstract
Unit soles having a smooth, dull appearance are molded from a polymeric composition comprising a mixture of linear ABA and radial (AB)--BA monoalkenyl arene/conjugated diene block copolymers, a styrene-acrylonitrile copolymer, vulcanized vegetable oil, hydrocarbon rubber extending oil and filler.
Claims8
A non-delaminating polymeric composition having a smooth, dull appearance in molded unit soles, said composition comprising:
- (a) 100 parts by weight of a mixture of a linear ABA block copolymer and a radial (AB--.sub..chi. BA block copolymer where .chi. is greater than 1, the weight ratio of linear to radial block copolymer is between about 25/75 and about 90/10, each block A being a monoalkenyl arene polymer having an average molecular weight between about 5,000 and 45,000, each block B being an elastomeric conjugated diene polymer having an average molecular weight between about 15,000 and about 300,000, and said blocks A comprise 8-75% by weight of each copolymer;
- (b) about 5 to about 50 parts by weight of a styrene-acrylonitrile copolymer;
- (c) about 3 to about 30 parts by weight of a vulcanized vegetable oil;
- (d) about 0 to about 200 parts by weight of a hydrocarbon rubber extending oil;
- and
- (e) about 0 to about 250 parts by weight of a finely divided filler.
3 more elements
Dependencies are inferred from the claim text.