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US4623696A
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Dicyclopentadiene-tris(2-hydroxyethyl)isocyanurate-modified polyesters
Assignee: P D GEORGE COMPANY A DE CORP
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Filing: 1985-05-02
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Granted: 1986-11-18
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Expires: 2005-05-02
Abstract
Abstract This invention relates to: (1) Unsaturated polyesters modified with dicyclopentadienes (DCPD) and tris(2-hydroxyethyl)isocyanurate (THEIC) (2) Blends of such polyesters with polymerizable ethylenically unsaturated monomers (3) The cured products of (1) and (2), and (4) The use of such products in a wide variety of applications including electrical applications, sheets and films thereof, both non-reinforced and reinforced, "B" stage resins, etc. These compositions possess excellent properties and bond strengths at high temperatures.
Inventors
- 👤 David W. Mabrey
- 👤 James M. Dye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:30
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; H01B3/425; C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0485; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6858
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
7 words
A dicyclopentadiene and tris(2-hydroxyethyl)isocyanurate modified unsaturated polyester.
Claim 2
Dependent Claim
7 words
A dicyclopentadiene and tris(2-hydroxyethyl)isocyanurate modified unsaturated polyester.
Claim 3
Dependent Claim
14 words
The polyester of claim 1, blended with at least one polymerizable ethylenically unsaturated monomer.
Claim 4
Dependent Claim
16 words
The blend of claim 2 where the polymerizable ethylenically unsaturated monomer is a vinyl aromatic monomer.
Claim 5
Dependent Claim
8 words
A cured product of any of claims 1-3.
Claim 6
Dependent Claim
11 words
An electrical insulating coating containing a cured product of claim 4.
Claim 7
Dependent Claim
12 words
A sheet or film containing a cured product of of claim 1.
Claim 8
Dependent Claim
15 words
A sheet or film containing a cured product of any of claims 2, or 3.
Claim 9
Dependent Claim
9 words
A fiber reinforced sheet or film of claim 6.
Claim 10
Dependent Claim
34 words
A polyester of any of claims 1-3 where the dicyclopentadiene comprises from about 20-38 percent by weight of the polyester and tris(2-hydroxyethyl)isocyanurate comprises from about 1.5 to 30 percent by weight of the polyester.
Claim 11
Dependent Claim
24 words
A polyester of claims 2 or 3 where the ethylenically unstaturated monomer in the blend is from 20-60 percent by weight of the polyester.
Claim 12
Dependent Claim
35 words
A polyester of claim 1 produced by a process which comprises reacting a polyol composition containing tris(2-hydroxyethyl)isocyanurate with a mixture of dicyclopentadiene esterified with an unsaturated dibasic acid and unesterified said dibasic acid and/or anhydride.
Claim 13
Dependent Claim
39 words
A polyester of claim 11 wherein in said process dicyclopentadiene with or without added polyols is added to hydrolyzed maleic anhydride at a temperature below 130° C. and a polyol containing composition containing tris(2-hydroxyethyl)isocyanurate is added and reacted therewith.
Claim 14
Dependent Claim
23 words
A polyester of claim 12 wherein in said process said dicyclopentadiene is added to a hydrolyzed mixture of maleic anhydride and trimellitic anhydride.
Claim 15
Dependent Claim
17 words
A polyester of claim 13 wherein said polyol containing composition contains also one or more polycarboxylic acids.
References Cited (Backward Citations)
US3322732A
Cited
US4443580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |