US3901779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl ester resin and process for curing same with ionizing radiation in the presence of amines
Assignee: Dow Chemical Co
•
Filing: 1973-08-27
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Granted: 1975-08-26
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Expires: 1993-08-27
Abstract
Abstract The addition of about 1.5 to 5 weight percent of certain amines to a thermosettable mixture of a nonvolatile vinyl monomer and a polymerizable vinyl ester resin reduces the dosage level of ionizing radiation required to cure the mixture.
Inventors
- 👤 Inder Mani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:57
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
164 words
A PROCESS FOR CURING A MIXTURE OF A POLYMERIZABLE VINYL ESTER RESIN AND A NONVOLATILE VINYL MONOMER SELECTED FROM THE GROUP CONSISTING OF ALKENYL AROMATICS, VINYL CARBOXYLIC ACIDS, VINYL NITRILES, VINYL AMIDES, ALKYL AND HYDROXYALKYL ESTERS OF VINYL CARBOXYLIC ACIDS WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 8 CARBONS, AND MIXTURES THEREOF, SAID PROCESS COMPRISES EXPOSING SAID THERMOSETTABLE MIXTURE IN AN INERT ATMOSPHERE TO IONIZING RADIATION, SAID MIXTURE HAVING ADDED THERETO ABOUT 1.5 TO 5 WEIGHT PERCENT BASED ON THE WEIGHT OF THE MIXTURE OF AN AMINE HAVING THE FORMULA R1R2R3N WHERE R1 IS AN ALKYL OR ARALKYL GROUP, R2 IS HYDROGEN AND R3 MAY BE HYDROGEN OR AN ALKYL GROUP OR R1 AND R3 TOGTHER MAY BE A CYCLIC ALKYLENE RADICAL OR AN OXYDIALKYLENE RADICAL, AND WHEREIN SAID VINYL ESTER RESIN IS PREPARED BY REACTING ABOUT EQUIVALENT AMOUNTS OF A POLYEPOXIDE OF A POLYHYDRIC PHENOL HAVING MORE THAN ONE EPOXIDE GROUP PER MOLECULE WITH A DICARBOXYLIC ACID HALF ESTER HAVING THE FORMULA
Claim 2
Dependent Claim
164 words
A PROCESS FOR CURING A MIXTURE OF A POLYMERIZABLE VINYL ESTER RESIN AND A NONVOLATILE VINYL MONOMER SELECTED FROM THE GROUP CONSISTING OF ALKENYL AROMATICS, VINYL CARBOXYLIC ACIDS, VINYL NITRILES, VINYL AMIDES, ALKYL AND HYDROXYALKYL ESTERS OF VINYL CARBOXYLIC ACIDS WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 8 CARBONS, AND MIXTURES THEREOF, SAID PROCESS COMPRISES EXPOSING SAID THERMOSETTABLE MIXTURE IN AN INERT ATMOSPHERE TO IONIZING RADIATION, SAID MIXTURE HAVING ADDED THERETO ABOUT 1.5 TO 5 WEIGHT PERCENT BASED ON THE WEIGHT OF THE MIXTURE OF AN AMINE HAVING THE FORMULA R1R2R3N WHERE R1 IS AN ALKYL OR ARALKYL GROUP, R2 IS HYDROGEN AND R3 MAY BE HYDROGEN OR AN ALKYL GROUP OR R1 AND R3 TOGTHER MAY BE A CYCLIC ALKYLENE RADICAL OR AN OXYDIALKYLENE RADICAL, AND WHEREIN SAID VINYL ESTER RESIN IS PREPARED BY REACTING ABOUT EQUIVALENT AMOUNTS OF A POLYEPOXIDE OF A POLYHYDRIC PHENOL HAVING MORE THAN ONE EPOXIDE GROUP PER MOLECULE WITH A DICARBOXYLIC ACID HALF ESTER HAVING THE FORMULA
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein R3 in the amine formula is hydrogen.
Claim 4
Dependent Claim
161 words
A thermosettable mixture suitable for curing by exposure to low levels of ionizing radiation comprising a mixture of a polymerizable vinyl ester resin and a nonvolatile monomer selected from the group consisting of alkenyl aromatics, vinyl carboxylic acids, vinyl nitriles, vinyl amides, alkyl and hydroxyalkyl esters of vinyl carboxylic acids wherein the alkyl group contains from 1 to 8 carbons, and mixtures thereof, said thermosettable mixture have added thereto about 1.5 to 5 weight percent based on the weight of the mixture of an amine having the formula R1R2R3N where R1 is an alkyl or aralkyl group, R2 is hydrogen and R3 may be hydrogen or an alkyl group or R1 and R3 together may be a cyclic alkylene radical or an oxydialkylene radical; and wherein said vinyl ester resin is prepared by reacting about equivalent amounts of a polyepoxide of a polyhydric phenol having more than one epoxide group per molecule with a dicarboxylic acid half ester having the formUla
Claim 5
Dependent Claim
161 words
A thermosettable mixture suitable for curing by exposure to low levels of ionizing radiation comprising a mixture of a polymerizable vinyl ester resin and a nonvolatile monomer selected from the group consisting of alkenyl aromatics, vinyl carboxylic acids, vinyl nitriles, vinyl amides, alkyl and hydroxyalkyl esters of vinyl carboxylic acids wherein the alkyl group contains from 1 to 8 carbons, and mixtures thereof, said thermosettable mixture have added thereto about 1.5 to 5 weight percent based on the weight of the mixture of an amine having the formula R1R2R3N where R1 is an alkyl or aralkyl group, R2 is hydrogen and R3 may be hydrogen or an alkyl group or R1 and R3 together may be a cyclic alkylene radical or an oxydialkylene radical; and wherein said vinyl ester resin is prepared by reacting about equivalent amounts of a polyepoxide of a polyhydric phenol having more than one epoxide group per molecule with a dicarboxylic acid half ester having the formUla
Claim 6
Dependent Claim
14 words
The composition of claim 3 wherein and R3 in the amine formula is hydrogen.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |