US3678129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polymer blends containing polyvinyl chloride, polyether urethane and butadiene-acrylonitrile copolymers
Assignee: Uniroyal Chemical Co Inc
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Filing: 1970-06-22
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Granted: 1972-07-18
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Expires: 1990-06-22
Abstract
Abstract Thermoplastic blends comprising a polyvinyl halide resin, a polyether polyurethane elastoplastic and an uncured diene-nitrile rubber in specified quantities and having specified properties have utility for various end used, those blends having excellent abrasion resistance being particularly suitable for use as shoe heel lift compositions.
Inventors
- 👤 William K Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L75/00; C08L75/04; C08L75/06; C08L9/00; C08L9/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
15 words
The shaped article of claim 1 in which said polyvinyl halide resin is polyvinyl chloride.
Claim 2
Dependent Claim
17 words
The shaped article of claim 1 in which said diene-nitrile copolymer is prepared from butadiene and acrylonitrile.
Claim 3
Dependent Claim
22 words
The shaped article of claim 1 in which said polyurethane elastoplastic is prepared from methylene bis(phenylisocyanate), polytetramethylene ether glycol and 1,4-butane diol.
Claim 4
Dependent Claim
98 words
A shaped article characterized by high abrasion resistance comprising a blend of from 70 to 76 parts by weight of polyvinyl chloride having a specific viscosity of from 0.28 to 0.33; from 12 to 20 parts by weight of an uncured butadiene-acrylonitrile rubbery copolymer having a Mooney viscosity of from 54 to 67; and from 8 to 15 parts by weight of a polyether polyurethane elastoplastic having a 350* F. melt flow index of from 0 to 100; the weight ratio of said diene-nitrile copolymer to said polyurethane elastoplastic being in the range of from 1:1 to 2:1.
Claim 5
Dependent Claim
99 words
A shoe heel lift characterized by high abrasion resistance comprising a blend of from 70 to 76 parts by weight of polyvinyl chloride having a specific viscosity of from 0.28 to 0.33; from 12 to 20 parts by weight of an uncured butadiene-acrylonitrile rubbery copolymer having a Mooney viscosity of from 54 to 67; and from 8 to 15 parts by weight of a polyether polyurethane elastoplastic having a 350* F. melt flow index of from 0 to 100; the weight ratio of said diene-nitrile copolymer to said polyurethane elastoplastic being in the range of from 1:1 to 2:1.
Claim 6
Dependent Claim
113 words
The process of making a shaped article which compriseS the steps of blending from 65 to 80 parts by weight of a polyvinyl halide resin having a specific viscosity of from 0.28 to 0.4; from 5 to 25 parts by weight of an uncured aliphatic hydrocarbon diene-aliphatic nitrile rubbery copolymer having a Mooney viscosity of from 47 to 70; and from 5 to 25 parts by weight of a polyether polyurethane elastoplastic having a 350* F. melt flow index of from 0 to 100; the weight ratio of said diene-nitrile copolymer to said polyurethane elastoplastic being in the range of from 1:3.2 to 3.2:1; and forming the resulting blend into a shaped article.
Claim 7
Dependent Claim
14 words
The process of claim 7 in which said polyvinyl halide resin is polyvinyl chloride.
Claim 8
Dependent Claim
16 words
The process of claim 7 in which said dienenitrile copolymer is prepared from butadiene and acrylonitrile.
Claim 9
Dependent Claim
22 words
The process of claim 7 in which said polyurethane elastoplastic is prepared from methylene bis (phenylisocyanate), polytetramethylene ether glycol and 1,4-butane diol.
Claim 10
Dependent Claim
113 words
The process of making a shaped article characterized by high abrasion resistance which comprises the steps of blending from 70 to 76 parts by weight of polyvinyl chloride having a specific viscosity of from 0.28 to 0.33; from 12 to 20 parts by weight of an uncured butadiene-acrylonitrile rubbery copolymer having a Mooney viscosity of from 54 to 67; and from 8 to 15 parts by weight of a polyether polyurethane elastoplastic having a 350* F. melt flow index of from 0 to 100; the weight ratio of said diene-nitrile copolymer to said polyurethane elastoplastic being in the range of from 1:1 to 2:1; and forming the resulting blend into a shaped article.
Claim 11
Dependent Claim
115 words
The process of making a shoe heel lift characterized by high abrasion resistance which comprises the steps of blending from 70 to 76 parts by weight of polyvinyl chloride having a specific viscosity of from 0.28 to 0.33; from 12 to 20 parts by weight of an uncured butadiene-acrylonitrile rubbery copolymer having a Mooney viscosity of from 54 to 67; and from 8 to 15 parts by weight of a polyether polyurethane elastoplastic having a 350* F. melt flow index of from 0 to 100; the weight ratio of said diene-nitrile copolymer to said polyurethane elastoplastic being in the range of from 1:1 to 2:1; and forming the resulting blend into a shoe heel lift.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |