US5026794A
Expired / Lapsed
US
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Adducts of an hydroxy-free acrylate resin and an epoxy resin
Assignee: Polysar Ltd
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Filing: 1989-05-23
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Granted: 1991-06-25
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Expires: 2009-05-23
Abstract
Abstract This invention provides an adduct of an epoxy resin and a hydroxy free acrylate resin. The novel adduct contains vinyl unsaturation and hence may be copolymerized with an ethylenically unsaturated monomer to provide a tough thermoset resin.
Inventors
- 👤 Kam W. Ho
- 👤 Patrick W. Lam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:22
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/10; C08L; C08L63/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
162 words
A liquid adduct which is copolymerizable with at least one ethylenically unsaturated monomer, said adduct consisting of (i) an epoxy resin having from 2 to 4 epoxy functional groups, and (ii) a hydroxy-free acrylate resin according to the formula ##STR6## wherein R is the hydroxy-free residue of a polyhydric alcohol, R 1 and R 2 are independently hydrogen or methyl, and n is from 1 to 3, characterized in that said adduct is prepared by reacting said epoxy resin and said hydroxy-free acrylate resin in the presence of a catalyst selected from (a) an tertiery amine and (b ) an onium salt according to the formula: ##STR7## where M is selected from elemental nitrogen and elemental phosphorous, X is selected from bromine, chlorine and iodine, and R a , R b , R c and R d are the same or different and are selected from the group consisting of alkyl, aryl and cycloalkyl hydrocarbons having from 1 to 20 carbon atoms.
Claim 2
Dependent Claim
162 words
A liquid adduct which is copolymerizable with at least one ethylenically unsaturated monomer, said adduct consisting of (i) an epoxy resin having from 2 to 4 epoxy functional groups, and (ii) a hydroxy-free acrylate resin according to the formula ##STR6## wherein R is the hydroxy-free residue of a polyhydric alcohol, R 1 and R 2 are independently hydrogen or methyl, and n is from 1 to 3, characterized in that said adduct is prepared by reacting said epoxy resin and said hydroxy-free acrylate resin in the presence of a catalyst selected from (a) an tertiery amine and (b ) an onium salt according to the formula: ##STR7## where M is selected from elemental nitrogen and elemental phosphorous, X is selected from bromine, chlorine and iodine, and R a , R b , R c and R d are the same or different and are selected from the group consisting of alkyl, aryl and cycloalkyl hydrocarbons having from 1 to 20 carbon atoms.
Claim 3
Dependent Claim
15 words
The adduct of claim 1 wherein said hydroxy-free acrylate resin is ethoxylated bisphenol A dimethacrylate.
Claim 4
Dependent Claim
16 words
The adduct of claim 1 wherein said epoxy resin is the diglycidyl ether of bisphenol A.
Claim 5
Dependent Claim
16 words
The adduct of claim 2 wherein said epoxy resin is the diglycidyl ether of bisphenol A.
Claim 6
Dependent Claim
12 words
The adduct of claim 1 wherein said catalyst is diazabicyclo (2.2.2) octane.
Claim 7
Dependent Claim
22 words
The adduct of claim 1 wherein the weight ratio of said epoxy resin to said acrylate resin is from 1:3 to 3:1.
References Cited (Backward Citations)
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Cited
JPS5518401A
Cited
US4327013A
Cited
US4374963A
Cited
US4503200A
Cited
JPS63170410A
Cited
US4835241A
Cited
US4910270A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |