Patent US3929928A successfully refreshed from Google Patents.
US3929928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of thermoplastic polyurethane elastomer, chlorinated polyethylene, and additional polyethylene
Assignee: Uniroyal Chemical Co Inc
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Filing: 1973-03-29
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Granted: 1975-12-30
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Expires: 1993-03-29
Abstract
Abstract Blends of thermoplastic polyurethane elastomer, chlorinated polyethylene and additional polyethylene resin have improved processing characteristics. The blends can be milled and calendered over a large temperature range.
Inventors
- 👤 Jr Harold G Wolf
- 👤 Robert A Hlavacek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:38
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; C; C08; C08L; C08L23/00; C08L23/26; C08L23/28; C08L23/286; B32B27/06; B32B27/32; B32B27/40; B32B5/00; B32B5/02; C08L75/00; C08L75/04; B32B2270/00; B32B2323/00; B32B2323/04; B32B2375/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
134 words
A METHOD OF MAKING A SHAPED ARTICLE COMPRISING PREPARING A MILLABLE, CALENDERABLE TERMOPLASTIC COMPOSITION COMPRISING A BLEND OF A. A HIGH MOLECULAR WEIGHT THERMOPLASTIC POLYURETHANE ELASTOMER DEVOID OF ETHYLENIC UNSATURATION AND FREENCO 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. AN ELASTOMERIC CHLORINATED POLYETHYLENE HAVING A GLASS TRANSITION TEMPERATURE OF-30*C. TO -20*C AND A CHLORINE CONTENT OF 25-50% BY WEIGHT, AND C. ADDITIONAL POLYETHYLENE RESIN, THE WEIGHT RATIO OF (A) TO (B) IN THE SAID BLEND BEING WITHIN THE RANGE FROM 4.5 TO 7.5 TO 40:60, AND THE AMOUNT OF (C) BEING FROM 4.5 TO 7.5 PARTS, PER 100 PARTS BY WEIGHT OF (A) PLUS (B), AND FORMING THE RESULTING BLEND INTO A SHAPED ARTICLE WITHOUT CURE.
Claim 2
Independent Claim
134 words
A METHOD OF MAKING A SHAPED ARTICLE COMPRISING PREPARING A MILLABLE, CALENDERABLE TERMOPLASTIC COMPOSITION COMPRISING A BLEND OF A. A HIGH MOLECULAR WEIGHT THERMOPLASTIC POLYURETHANE ELASTOMER DEVOID OF ETHYLENIC UNSATURATION AND FREENCO 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. AN ELASTOMERIC CHLORINATED POLYETHYLENE HAVING A GLASS TRANSITION TEMPERATURE OF-30*C. TO -20*C AND A CHLORINE CONTENT OF 25-50% BY WEIGHT, AND C. ADDITIONAL POLYETHYLENE RESIN, THE WEIGHT RATIO OF (A) TO (B) IN THE SAID BLEND BEING WITHIN THE RANGE FROM 4.5 TO 7.5 TO 40:60, AND THE AMOUNT OF (C) BEING FROM 4.5 TO 7.5 PARTS, PER 100 PARTS BY WEIGHT OF (A) PLUS (B), AND FORMING THE RESULTING BLEND INTO A SHAPED ARTICLE WITHOUT CURE.
Claim 3
Dependent Claim
20 words
A method as in claim 1 in which (a) is a reaction product of polytetramethylene ether glycol, butanediol-1,4 and diphenylmethane-p,p''-diisocyanate.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |