US4377655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dull, smooth unit soles
Assignee: Shell USA Inc
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Filing: 1981-12-14
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Granted: 1983-03-22
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Expires: 2001-12-14
Abstract
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.
Inventors
- 👤 Glenn R. Himes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:33
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
165 words
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.χ BA block copolymer where χ 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.
Claim 2
Dependent Claim
165 words
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.χ BA block copolymer where χ 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.
Claim 3
Dependent Claim
22 words
The composition according to claim 1 wherein said A block is a polystyrene block and said B block is a poly-butadiene block.
Claim 4
Dependent Claim
25 words
The composition according to claim 1 wherein said radial block copolymer has the structure (AB--.sub.χ BA where χ is between about 2 and about 6.
Claim 5
Dependent Claim
19 words
The composition according to claim 1 also containing between about 0.1 and about 3.0 parts by weight stearic acid.
Claim 6
Dependent Claim
72 words
The composition according to claim 1 wherein the amounts of each component in the composition are: (a) 100 parts by weight linear plus radial block copolymers; (b) about 15 to about 35 parts by weight styrene-acrylonitrile copolymer; (c) about 5 to about 20 parts by weight vulcanized vegetable oil; (d) about 25 to about 100 parts by weight rubber extending oil; and (e) about 5 to about 60 parts by weight filler.
Claim 7
Dependent Claim
19 words
The composition according to claim 1 or claim 4 wherein said vulcanized vegetable oil is vulcanized rape seed oil.
Claim 8
Dependent Claim
12 words
The composition according to claim 1 wherein said filler is hydrated alumina.
Claim 9
Dependent Claim
10 words
The unit sole molded from the composition of claim 1.
References Cited (Backward Citations)
USRE28236E
Cited
US4111896A
Cited
US4126600A
Cited
US4216132A
Cited
US4216131A
Cited
US4248759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |