Patent US3917666A successfully refreshed from Google Patents.
US3917666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid copolymers of vinyl monomers and unsaturated diesters
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1974-04-05
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Granted: 1975-11-04
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Expires: 1994-04-05
Abstract
Abstract There is disclosed the preparation of flexible or rigid polyurethane foams of improved physical and chemical properties by the chemical reaction of (A) an organic polyisocyanate and (B) the copolymer of (a) a polymerizable organic vinyl monomer having either one double bond or two double bonds in conjugation to each other and (b) a hydroxyl-containing comonomer consisting essentially of an unsaturated polyalkylene ether macromonomer which has an equivalent weight of about 100 to 3000 and which contains one to three hydroxyl groups and one copolymerizable unsaturation per molecule.
Inventors
- 👤 Hubert J Fabris
- 👤 Robert J Herold
- 👤 Edwin M Maxey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:17
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2615; C08F; C08F283/00; C08F283/06; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/63
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
132 words
A METHOD FOR THE PREPARATION OF A LIQUID COPOLYMER HAVING AN AVERAGE FUNCTIONALITY OF 2 TO 6 AND SELECTED FROM THE CLASS CONSISTING OF A COPOLYMER OF A VINYL MONOMER SELECTED FROM STYRENE, METACRYLONITRILE, ACRYLONITRILE AND A LOWER ALKYL ACRYLATE OR METHACRYLATE WITH A POLYALKYLENE ETHERITACONATE MACROMONOMER HAVING AN EQUIVALENT WEIGHT OF ABOUT 100 TO 3,000 PER HYDROXYL GROUP, HAVING ONE COPOLYMERIZABLE GROUPS PER MOLECULE, AND HAVING ONE COPOLYMERIZABLE CARBON-TO CARBON DOUBLE BOND PER MOLECULE, AND A COPOLYMER OF A VINYL MONOMER SELECTED FROM VINYL CHLORIDE, VINYLIDENE CHLORIDE AND VINYL ACETATE WITH A POLYALKYLENE ETHER MALEATE OR FUMARATE MACROMONOMER HAVING AN EQUIVALENT WEIGHT OF ABOUT 100 TO 3,000 PERHYDROXYL GROUP, HAVING ONE TO TREE HYDROXYL GROUPS PER MOLECULE, AND HAVING ONE COPOLYMERIZABLE CARBON-TO-CARBON DOUBLE BOND PER MOLECULE, SAID METHOD CONSISTING ESSENTIALLY OF
Claim 2
Independent Claim
132 words
A METHOD FOR THE PREPARATION OF A LIQUID COPOLYMER HAVING AN AVERAGE FUNCTIONALITY OF 2 TO 6 AND SELECTED FROM THE CLASS CONSISTING OF A COPOLYMER OF A VINYL MONOMER SELECTED FROM STYRENE, METACRYLONITRILE, ACRYLONITRILE AND A LOWER ALKYL ACRYLATE OR METHACRYLATE WITH A POLYALKYLENE ETHERITACONATE MACROMONOMER HAVING AN EQUIVALENT WEIGHT OF ABOUT 100 TO 3,000 PER HYDROXYL GROUP, HAVING ONE COPOLYMERIZABLE GROUPS PER MOLECULE, AND HAVING ONE COPOLYMERIZABLE CARBON-TO CARBON DOUBLE BOND PER MOLECULE, AND A COPOLYMER OF A VINYL MONOMER SELECTED FROM VINYL CHLORIDE, VINYLIDENE CHLORIDE AND VINYL ACETATE WITH A POLYALKYLENE ETHER MALEATE OR FUMARATE MACROMONOMER HAVING AN EQUIVALENT WEIGHT OF ABOUT 100 TO 3,000 PERHYDROXYL GROUP, HAVING ONE TO TREE HYDROXYL GROUPS PER MOLECULE, AND HAVING ONE COPOLYMERIZABLE CARBON-TO-CARBON DOUBLE BOND PER MOLECULE, SAID METHOD CONSISTING ESSENTIALLY OF
Claim 3
Dependent Claim
38 words
MIXING THE MACROMONOMER AND THE VINYL MONOMER IN A MOLE RATIO OF 1:5 TO 1:50 SIMULTANEOUSLY WITH A CHAIN TRANSFER AGENT AN AN INITIATOR FOR RADICAL POLYMERIZATION, SAID INITIATOR BEING SELCTED FROM PEROXIDES AND ALIPHATIC DIAZO COMPOUNDS, AND
Claim 4
Dependent Claim
38 words
MIXING THE MACROMONOMER AND THE VINYL MONOMER IN A MOLE RATIO OF 1:5 TO 1:50 SIMULTANEOUSLY WITH A CHAIN TRANSFER AGENT AN AN INITIATOR FOR RADICAL POLYMERIZATION, SAID INITIATOR BEING SELCTED FROM PEROXIDES AND ALIPHATIC DIAZO COMPOUNDS, AND
Claim 5
Dependent Claim
11 words
ACTIVATING SAID INITIATOR TO CAUSE THE COPOLYMERIZATION OF SAID COPOLYMR COMPONENTS.
Claim 6
Dependent Claim
11 words
ACTIVATING SAID INITIATOR TO CAUSE THE COPOLYMERIZATION OF SAID COPOLYMR COMPONENTS.
Claim 7
Dependent Claim
11 words
activating said initiator to cause the copolymerization of said copoylmer components.
Claim 8
Dependent Claim
11 words
activating said initiator to cause the copolymerization of said copoylmer components.
Claim 9
Dependent Claim
19 words
A method in accordance with claim 1 wherein said macromonomers contain no more than two hydroxyl groups per molecule.
Claim 10
Dependent Claim
23 words
A copolymer prepared in accordance with the method of claim 1, said copolymer having a molecular weight ranging from about 500 to 7,000.
Claim 11
Dependent Claim
15 words
A copolymer in accordance with claim 3 wherein said copolymer is liquid at ambient temperatures.
Claim 12
Dependent Claim
13 words
A copolymer in accordance with claim 3 wherein said vinyl monomer is styrene.
Claim 13
Dependent Claim
13 words
A copolymer in accordance with claim 3 wherein said vinyl monomer is acrylonitrile.
Claim 14
Dependent Claim
14 words
A copolymer in accordance with claim 3 wherein said vinyl monomer is methyl methacrylate.
Claim 15
Dependent Claim
22 words
A copolymer in accordance with claim 3 wherein said vinyl monomer is vinyl chloride and said macromonomer is a polyalkylene ether maleate.
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |