US4410680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-phase, heat-curable polyepoxide-unsaturated monomer compositions
Assignee: Shell USA Inc
•
Filing: 1982-11-04
•
Granted: 1983-10-18
•
Expires: 2002-11-04
Abstract
Abstract A curable thermosetting resin, especially suitable for RIM applications, comprising a blend of (a) 100 parts by weight of a polyepoxide, particularly a normally liquid polyepoxide and more particularly a glycidyl polyether of a polyhydric phenol, (b) from about 10 to about 200 parts by weight of at least one ethylenically unsaturated monomer, especially an aromatic monomer, and preferably styrene, (c) a curing amount of an aliphatic or cycloaliphatic polyfunctional amine or a polyamide, and (d) an effective amount of an amine-compatible free-radical initiator.
Inventors
- 👤 Thomas F. Brownscombe
- 👤 William W. C. Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:48
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/10; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
59 words
A curable thermosetting resin composition comprising a blend of (1) 100 parts by weight of a epoxy compound containing at least one vicinal epoxy group in the molecule, (2) from about 10 to about 200 parts by weight of at least one ethylenically unsaturated aromatic monomer, (3) a curing amount of 4,4'-di(cyclohexylamino)methane and (4) an effective amount of 2,5-dimethyl-2,5-bis(2-ethylhexanoylperoxy)hexane.
Claim 2
Dependent Claim
59 words
A curable thermosetting resin composition comprising a blend of (1) 100 parts by weight of a epoxy compound containing at least one vicinal epoxy group in the molecule, (2) from about 10 to about 200 parts by weight of at least one ethylenically unsaturated aromatic monomer, (3) a curing amount of 4,4'-di(cyclohexylamino)methane and (4) an effective amount of 2,5-dimethyl-2,5-bis(2-ethylhexanoylperoxy)hexane.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the epoxy compound is a glycidyl polyether of a polyhydric phenol.
Claim 4
Dependent Claim
11 words
The composition of claim 2 wherein the polyhydric phenol is 2,2-bis(4-hydroxyphenyl)propane.
Claim 5
Dependent Claim
12 words
The composition of claim 2 wherein the polyhydric phenol is hydrogenated 2,2-bis(4-hydroxyphenyl)propane.
Claim 6
Dependent Claim
13 words
The composition of claim 1 wherein the ethylenically unsaturated aromatic monomer is styrene.
Claim 7
Dependent Claim
20 words
The composition of claim 5 wherein up to about 80% of the styrene is replaced with a compatible unsaturated comonomer.
Claim 8
Dependent Claim
10 words
The composition of claim 6 wherein the comonomer is divinylbenzene.
Claim 9
Dependent Claim
10 words
The composition of claim 6 wherein the comonomer is methylmethacrylate.
Claim 10
Dependent Claim
10 words
The composition of claim 6 wherein the comonomer is methacrylonitrile.
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) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |