US3945972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable epoxy resin composition comprising an epoxy resin and a reactive diluent
Assignee: Nitto Kasei Co Ltd
•
Filing: 1974-10-07
•
Granted: 1976-03-23
•
Expires: 1994-10-07
Abstract
Abstract A curable epoxy resin composition comprising an epoxy resin and a reactive diluent, at least 60% by weight of the total amount of said reactive diluent consisting of a specific etherified polyepichlohydrin monoglycidyl ether and/or etherified polymethylepichlorohydrin monoglycidyl ether. The above etherified product is prepared by addition-polymerizing 2 to 10 mols of a compound selected from the group consisting of epichlorohydrin and methylepichlorohydrin with a monohydric phenol or alcohol and treating the resulting addition polymer with an alkaline substance.
Inventors
- 👤 Kazuhiko Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:11
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
A curable epoxy resin composition comprising an epoxy resin having at least two epoxy groups selected from glycidyl and methylglycidyl in the molecule and a reactive diluent, at least 60% by weight of the total amount of said reactive diluent consisting of a compound expressed by the following formula (I) ##EQU5## wherein R is a member selected from the group consisting of straight-chain alkyl containing 1 to 7 carbon atoms, branched-chain alkyl containing 1 to 7 carbon atoms, alkenyl containing 2 to 7 carbon atoms, cycloalkyl containing 5 to 6 carbon atoms, methyl-substituted cycloalkyl containing 6 to 7 carbon atoms, phenyl cresyl and benzyl R' is a hydrogen atom or methyl, a plurality of R' groups may be the same or different, and n is a positive integer of 1 to 9.
Claim 2
Dependent Claim
132 words
A curable epoxy resin composition comprising an epoxy resin having at least two epoxy groups selected from glycidyl and methylglycidyl in the molecule and a reactive diluent, at least 60% by weight of the total amount of said reactive diluent consisting of a compound expressed by the following formula (I) ##EQU5## wherein R is a member selected from the group consisting of straight-chain alkyl containing 1 to 7 carbon atoms, branched-chain alkyl containing 1 to 7 carbon atoms, alkenyl containing 2 to 7 carbon atoms, cycloalkyl containing 5 to 6 carbon atoms, methyl-substituted cycloalkyl containing 6 to 7 carbon atoms, phenyl cresyl and benzyl R' is a hydrogen atom or methyl, a plurality of R' groups may be the same or different, and n is a positive integer of 1 to 9.
Claim 3
Dependent Claim
30 words
The epoxy resin composition of claim 1 wherein the amount of said reactive diluent is 1 to 150 parts by weight per 100 parts by weight of said epoxy resin.
Claim 4
Dependent Claim
26 words
The epoxy resin composition of claim 1 wherein said epoxy resin is a bisphenol A. glycidyl ether type epoxy resin derived from bisphenol A and epichlorohydrin.
Claim 5
Dependent Claim
30 words
The curable epoxy resin composition of claim 1 wherein at lease 80% by weight of the total amount of said reactive diluent consists of the compound expressed by formula (I).
Claim 6
Dependent Claim
84 words
The curable epoxy resin composition of claim 1 wherein said epoxy resin is selected from the group consisting of: Bisphenol A.glycidyl ether epoxy resins; phenol novolac polyglycidyl ether epoxy resins; cresol novolac polyglycidyl ether epoxy resins; brominated bisphenol A.diglycidyl ether epoxy resins; hydrogenated bisphenol A.diglycidyl ether epoxy resins; diglycidyl ether epoxy resins derived from alkylene oxide-added bisphenol A and epichlorohydrin and containing an alkylene ether in the side chain; resorcinol.diglycidyl ether epoxy resins; phthalic acid diglycidyl ester epoxy resins; and bisphenol A.methylepichlorohydrin epoxy resins.
References Cited (Backward Citations)
US3023224A
Cited
FR1383358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |