US4409357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Footwear-compounds from derivatized star-block copolymers
Assignee: Lyondell Chemical Technology LP
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Filing: 1981-09-10
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Granted: 1983-10-11
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Expires: 2001-09-10
Abstract
Abstract Footwear compounds containing star-block copolymers having functional groups associated with the nucleus of the copolymers have been prepared. The copolymers of from 10-55% by weight of a monovinyl aromatic compound and 45-90% by weight of a conjugated diene have at least 3 arms connected to a polyvinyl aromatic nucleus and up to the same number of polar functional groups attached to said nucleus as there are arms attached thereto.
Inventors
- 👤 Ralph Milkovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:33
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08G; C08G81/00; C08G81/02; C08G81/021; C08G81/022; C08L53/00; C08L53/02; C08L53/025; Y; Y10; Y10S; Y10S525/00; Y10S525/901
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A shoe-sole composition having greater processibility and adhesion to shoe uppers than composition made with un-derivatized copolymers consisting of: (a) 100 parts by weight of a star-block copolymer of 10 to 55% by weight of a monovinyl aromatic monomer and 45 to 90% by weight of a conjugated diene monomer of 4 to to 8 carbon atoms; said copolymer having at least three arms connected to a polyvinyl aromatic compound nucleus and polar functional groups attached to said nucleus by reacting a derivatization agent directly at the nucleus; (b) about 80-250 parts by weight of a naphthenic extender oil; (c) about 40-150 parts by weight of a polystyrene material selected from the group consisting of low molecular weight polystyrene, low molecular weight poly-alphamethylstyrene, and mixtures thereof; (d) about 0-80 parts by weight of a finely divided filler; and (e) about 0-50 parts by weight of stabilizers.
Claim 2
Dependent Claim
146 words
A shoe-sole composition having greater processibility and adhesion to shoe uppers than composition made with un-derivatized copolymers consisting of: (a) 100 parts by weight of a star-block copolymer of 10 to 55% by weight of a monovinyl aromatic monomer and 45 to 90% by weight of a conjugated diene monomer of 4 to to 8 carbon atoms; said copolymer having at least three arms connected to a polyvinyl aromatic compound nucleus and polar functional groups attached to said nucleus by reacting a derivatization agent directly at the nucleus; (b) about 80-250 parts by weight of a naphthenic extender oil; (c) about 40-150 parts by weight of a polystyrene material selected from the group consisting of low molecular weight polystyrene, low molecular weight poly-alphamethylstyrene, and mixtures thereof; (d) about 0-80 parts by weight of a finely divided filler; and (e) about 0-50 parts by weight of stabilizers.
Claim 3
Dependent Claim
51 words
The composition of claim 1 wherein said polar functional groups are selected from the group consisting of carboxyl, mercaptothiocarbonyl, sulfino, primary alcohols, secondary alcohols, tertiary alcohols, halides, epoxide, silane, phosphine, phosphorus halides, carbonyl chloride, anilines, alkyl amines, mercaptans, ketones, aldehydes, carboxylic acid amides, N-alkyl amides, isocyanates, sulfonyl halides, haloformates, and siloxanols.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein said star-block copolymer is a copolymer of styrene and 1,3-butadiene.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein said finely divided filler is amorphous silica.
Claim 6
Dependent Claim
8 words
A shoe-sole having the composition of claim 1.
References Cited (Backward Citations)
US3281383A
Cited
US3957913A
Cited
US3950292A
Cited
US3959412A
Cited
US3985830A
Cited
US3985830B1
Cited
US4010226A
Cited
US4067929A
Cited
US4116917A
Cited
US4107124A
Cited
US4117037A
Cited
US4104326A
Cited
US4236715A
Cited
US4248982A
Cited
US4229338A
Cited
US4304886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |