US3882191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of thermoplastic polyurethane elastomer, polyvinyl chloride resin and chlorinated polyethylene
Assignee: Uniroyal Ltd Great Britain
•
Filing: 1973-03-29
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Granted: 1975-05-06
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Expires: 1993-03-29
Abstract
Abstract Blends of thermoplastic polyurethane elastomer, polyvinyl chloride resin and chlorinated polyethylene have good processing characteristics and are useful for making calendered sheet and film, coated fabrics, expanded articles, conveyor belts, etc.
Inventors
- 👤 Julius A Balatoni
- 👤 Som N Khanna
- 👤 Wayne S Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:38
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08L; C08L75/00; C08L75/04; C08J2375/00; C08J2375/04; C08J2457/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
128 words
A METHOD OF MAKING A SHAPED ARTICLE COMPRISING THE STEPD OF BLENDING A. A HIGH MOLECULAR WEIGHT THERMOPLASTIC POLYURETHANE ELASTOMER DEVOID OF ETHYLENIC UNSATURATION AND FREE NCO GROUPS WHICH IS A REACTION PRODUCT OF A POLYMERIC POLYOL, AN ORGANIC POLYISOCYANATE AND A LOW MOLECULAR WEIGHT BIFUNCTIONAL MATERIAL HAVING TWO REACTIVE HYDROGENS, B. POLYVINYL CHLORIDE RESIN, AND C. AN ELASTOMERIC CHLORINATED POLYETHYLENE HAVING A GLASS TRANSITION TEMPERATURE OF -30*C TO -20*C. AND A CHLORINE CINTENT OF 25-50% BY WEIGHT THE AMOUNT OF (A) BEING 40-60%, THE AMOUNT OF (B) BEING 15-25%, AND THE AMOUNT OF (C) BEING 15-30%, BASED ON THE WEIGHT OF THE THREE POLYMERS, THE RESULTING BLEND BEING REPEATEDLY REPROCEDDABLE AND BEING DEVOID OF CURING AGENT, AND FORMING THE RESULTING BLEND INTO A SHAPED ARTICLE WITHOUT CURE.
Claim 2
Independent Claim
128 words
A METHOD OF MAKING A SHAPED ARTICLE COMPRISING THE STEPD OF BLENDING A. A HIGH MOLECULAR WEIGHT THERMOPLASTIC POLYURETHANE ELASTOMER DEVOID OF ETHYLENIC UNSATURATION AND FREE NCO GROUPS WHICH IS A REACTION PRODUCT OF A POLYMERIC POLYOL, AN ORGANIC POLYISOCYANATE AND A LOW MOLECULAR WEIGHT BIFUNCTIONAL MATERIAL HAVING TWO REACTIVE HYDROGENS, B. POLYVINYL CHLORIDE RESIN, AND C. AN ELASTOMERIC CHLORINATED POLYETHYLENE HAVING A GLASS TRANSITION TEMPERATURE OF -30*C TO -20*C. AND A CHLORINE CINTENT OF 25-50% BY WEIGHT THE AMOUNT OF (A) BEING 40-60%, THE AMOUNT OF (B) BEING 15-25%, AND THE AMOUNT OF (C) BEING 15-30%, BASED ON THE WEIGHT OF THE THREE POLYMERS, THE RESULTING BLEND BEING REPEATEDLY REPROCEDDABLE AND BEING DEVOID OF CURING AGENT, AND FORMING THE RESULTING BLEND INTO A SHAPED ARTICLE WITHOUT CURE.
Claim 3
Dependent Claim
16 words
A method as in claim 1 in which the said shaped article is formed by calendering.
References Cited (Backward Citations)
US3429948A
Cited
US3594449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |