US4012458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin composition comprising a cyclopentadiene type resin and epoxy hardener
Assignee: Zeon Corp
•
Filing: 1975-06-23
•
Granted: 1977-03-15
•
Expires: 1995-06-23
Abstract
Abstract An epoxy resin composition comprising I. not more than 90% by weight of a cyclopentadiene type resin having a hydroxyl value of 100-300 and a softening point of 50 DEG -170 DEG C., said resin being that obtained by heat-polymerizing a monomeric mixture containing a cyclopentadiene monomer and a hydroxyl-containing monoolefinic monomer copolymerizable therewith.
Inventors
- 👤 Akira Wada
- 👤 Kazunob Karino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:29
CPC Classifications
C; C08; C08L; C08L63/00; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/16; C08K5/17; C08L45/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
130 words
An epoxy resin composition comprising I. 5-80% by weight of a cyclopentadiene type resin having a hydroxyl value of 100-300 and a softening point of 50°-170° C, said resin consisting essentially of the reaction product of a cyclopentadiene monomer and a hydroxyl-containing monoolefinic monomer copolymerizable therewith and optionally a third monomer copolymerizable therewith by heat-polymerizing at a temperature of 200°-300° C a monomeric mixture containing at least 50% by weight of a cyclopentadiene monomer and less than 50% by weight of a hydroxyl-containing monoolefinic monomer copolymerizable therewith and less than 20% by weight of the total monomers of said third copolymerizable monomer, Ii. 95-20% by weight of an epoxy resin which has at least two epoxy groups in the molecule, and Iii. an effective amount of an epoxy resin hardener.
Claim 2
Dependent Claim
130 words
An epoxy resin composition comprising I. 5-80% by weight of a cyclopentadiene type resin having a hydroxyl value of 100-300 and a softening point of 50°-170° C, said resin consisting essentially of the reaction product of a cyclopentadiene monomer and a hydroxyl-containing monoolefinic monomer copolymerizable therewith and optionally a third monomer copolymerizable therewith by heat-polymerizing at a temperature of 200°-300° C a monomeric mixture containing at least 50% by weight of a cyclopentadiene monomer and less than 50% by weight of a hydroxyl-containing monoolefinic monomer copolymerizable therewith and less than 20% by weight of the total monomers of said third copolymerizable monomer, Ii. 95-20% by weight of an epoxy resin which has at least two epoxy groups in the molecule, and Iii. an effective amount of an epoxy resin hardener.
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein said monoolefinic monomer is a member of the group consisting of allyl alcohol, crotyl alcohol, hydroxyethyl acrylate and hydroxyethyl methacrylate.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said monoolefinic monomer is allyl alcohol.
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein said cyclopentadiene type resin (I) has an hydroxyl value of 150-280.
Claim 6
Dependent Claim
28 words
The composition of claim 1 wherein said epoxy resin (II) has an epoxy equivalency of 150-4000 and is the condensation product of an epihalohydrin and a polyhydric phenol.
Claim 7
Dependent Claim
19 words
The composition of claim 5 wherein said epoxy resin (II) is the condensation product of epichlorohydrin and bisphenol A.
Claim 8
Dependent Claim
18 words
The composition of claim 1 wherein the cyclopentadiene type resin (I) comprises from 10 to 75% by weight.
Claim 9
Dependent Claim
59 words
The composition of claim 7 wherein said cyclopentadiene type resin (I) has an hydroxyl value of 150-280 and said monoolefinic monomer is selected from the group consisting of allyl alcohol, crotylalcohol, hydroxyethyl acrylate and hydroxyethyl methacrylate; and said epoxy resin (II) has an epoxy equivalency of 150-4000 and is the condensation product of an epihalohydrin and a polyhydric phenol.
Claim 10
Dependent Claim
23 words
The composition of claim 8 wherein said monoolefinic monomer is allyl alcohol, said epihalohydrin is epichlorohydrin and said polyhydric alcohol is bisphenol A.
Claim 11
Dependent Claim
38 words
The composition of claim 1 wherein said cyclopentadiene type resin (I) is the reaction product of 80 to 50 percent by weight of the cyclopentadiene monomer and 20 to 50 percent by weight of the hydroxyl-containing monoolefinic monomer.
References Cited (Backward Citations)
US2951831A
Cited
US2962462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |