Patent US3918431A successfully refreshed from Google Patents.
US3284415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane from ethylene-hydroxyalkyl acrylate copolymers
Assignee: Dow Chemical Co
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Filing: 1964-09-04
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Granted: 1966-11-08
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Expires: 1984-09-04
Abstract
No abstract record available.
Inventors
- 👤 Jack W Horvath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:19
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229; C08G18/6204; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0025; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A POLYURETHANE COMPOSITION THE PRODUCT OBTAINED BY MIXING AND REACTING AN ORGANIC POLYISOCYANATE WITH A RESINOUS POLYOL SELECTED FROM THE GROUP CONSISTING OF (A) A COPOLYMER CONTAINING FROM ABOUT 65 TO ABOUT 96 PERCENT BY WEIGHT ETHYLENE AND FROM ABOUT 4 TO ABOUT 35 PERCENT BY WEIGHT OF A B-HYDROXYALKYL ACRYLATE HAVING THE GENERAL FORMULA CH2=C(-R)-COO-G-OH WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL AND G IS AN ALKYLENE GROUP CONTAINING FROM 2 TO 8 CARBON ATOMS, AND (B) A TERPOLYMER CONTAINING FROM ABOUT 61 TO ABOUT 95 PERCENT BY WEIGHT ETHYLENE, FROM ABOUT 4 TO ABOUT 35 PERCENT BY WEIGHT OF SAID B-HYDROXYALKYL ACRYLATE AND FROM ABOUT 1 TO ABOUT 35 PERCENT BY WEIGHT OF AN ALKYL ACRYLATE HAVING THE FORMULA CH2=C(-R1)-COO-R2 WHEREIN R1 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL AND R2 IS AN ALKYL GROUP HAVING FROM 1 TO 8 CARBON ATOMS, AND MIXTURES OF (A) AND (B).
Claim 2
Dependent Claim
158 words
A POLYURETHANE COMPOSITION THE PRODUCT OBTAINED BY MIXING AND REACTING AN ORGANIC POLYISOCYANATE WITH A RESINOUS POLYOL SELECTED FROM THE GROUP CONSISTING OF (A) A COPOLYMER CONTAINING FROM ABOUT 65 TO ABOUT 96 PERCENT BY WEIGHT ETHYLENE AND FROM ABOUT 4 TO ABOUT 35 PERCENT BY WEIGHT OF A B-HYDROXYALKYL ACRYLATE HAVING THE GENERAL FORMULA CH2=C(-R)-COO-G-OH WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL AND G IS AN ALKYLENE GROUP CONTAINING FROM 2 TO 8 CARBON ATOMS, AND (B) A TERPOLYMER CONTAINING FROM ABOUT 61 TO ABOUT 95 PERCENT BY WEIGHT ETHYLENE, FROM ABOUT 4 TO ABOUT 35 PERCENT BY WEIGHT OF SAID B-HYDROXYALKYL ACRYLATE AND FROM ABOUT 1 TO ABOUT 35 PERCENT BY WEIGHT OF AN ALKYL ACRYLATE HAVING THE FORMULA CH2=C(-R1)-COO-R2 WHEREIN R1 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL AND R2 IS AN ALKYL GROUP HAVING FROM 1 TO 8 CARBON ATOMS, AND MIXTURES OF (A) AND (B).
References Cited (Backward Citations)
GB831056A
Cited
US3028367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |