Patent US4710420A successfully refreshed from Google Patents.
US4710420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated polyester resin compositions
Assignee: Kanegafuchi Chemical Industry Co Ltd
•
Filing: 1985-12-20
•
Granted: 1987-12-01
•
Expires: 2005-12-20
Abstract
Abstract An unsaturated polyester resin composition is provided comprising a hard unsaturated polyester component, a soft unsaturated polyester component and a cross-linking monomer. The soft polyester component contains a polyoxyalkylene segment having a molecular weight from 600 to 6000 in the backbone thereof and is dispersed in the hard polyester component forming fine particles having a particle size not greater than 4 microns. The resin composition, when cured, exhibits a Tg corresponding to the hard polyester component from 100 DEG C. to 200 DEG C. and another Tg corresponding to the soft polyester component from -100 DEG C. to 0 DEG C.
Inventors
- 👤 Satoshi Tonoki
- 👤 Hidenari Tsunemi
- 👤 Asaichi Nishimura
- 👤 Kunihisa Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:24
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/04; B32B29/00; B32B29/002; B32B29/005; C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G63/553; C08G63/66; C08G63/668; C08G63/676; C08G63/91; C08G63/914; C08G63/918; C08L; C08L67/00; C08L67/06; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; B32B2250/00; B32B2250/26; B32B2260/00; B32B2260/02; B32B2260/028; B32B2260/04; B32B2260/046; B32B2457/00; B32B2457/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31786; Y10T428/31794
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
101 words
An unsaturated polyester resin composition comprising a hard unsaturated polyester component, a soft unsaturated polyester component and a cross-linking monomer, said soft polyester component containing a polyoxyalkylene segment having a molecular weight from 600 to 6000 in the backbone thereof and being dispersed in said hard polyester component forming fine particles having a particle size not greater than 0.4 microns, said resin composition exhibiting in its cured state a glass transition temperature corresponding to said hard polyester component from 100° C. to 200° C. and another glass transition temperature corresponding to said soft polyester component from -100° C. to 0° C.
Claim 2
Dependent Claim
101 words
An unsaturated polyester resin composition comprising a hard unsaturated polyester component, a soft unsaturated polyester component and a cross-linking monomer, said soft polyester component containing a polyoxyalkylene segment having a molecular weight from 600 to 6000 in the backbone thereof and being dispersed in said hard polyester component forming fine particles having a particle size not greater than 0.4 microns, said resin composition exhibiting in its cured state a glass transition temperature corresponding to said hard polyester component from 100° C. to 200° C. and another glass transition temperature corresponding to said soft polyester component from -100° C. to 0° C.
Claim 3
Dependent Claim
72 words
The composition according to claim 1 wherein said hard polyester component is produced by post-brominating an unsaturated polyester having a DCPD monomaleate moiety at each terminal and a tetrahydrophthalic acid moiety in the middle of the polyester chain, and wherein said soft polyester component contains a DCPD monomaleate moiety at each terminal and a polyoxypropylene polyol moiety having a molecular weight from 600 to 6000 in the middle of the polyester chain.
Claim 4
Dependent Claim
58 words
The composition according to claim 1 wherein the proportions of said hard polyester component, said soft polyester component and said cross-linking monomer are such that said soft polyester component and said cross-linking monomer occupy 1 to 50% and 10 to 70%, respectively by weight of the sum of these three components, the balance being the hard polyester component.
Claim 5
Dependent Claim
27 words
The composition according to claim 1 wherein said hard polyester component is produced by reacting DCPD monomaleate, bis-(2-hydroxyethyl)tetrahydrophthalate, and fumaric acid, and then post-brominating the resulting polyester.
Claim 6
Dependent Claim
24 words
The composition according to claim 1 wherein said soft polyester component is produced by reacting DCPD monomaleate, bis-(3'-hydroxypropoxypropyl)fumarate, polyoxyproplene triol tri-adipate and maleic acid.
Claim 7
Dependent Claim
16 words
The composition according to claim 1 wherein said particle size is not greater than 0.2 microns.
Claim 8
Dependent Claim
16 words
The composition according to claim 6 wherein said particle size lies between 0.01 and 0.1 microns.
Claim 9
Dependent Claim
19 words
The composition according to claim 1 wherein said hard polyester component contains a DCPD monomaleate moiety at each terminal.
Claim 10
Dependent Claim
19 words
The composition according to claim 8 wherein said DCPD monomaleate moiety is post-brominated to render the composition flame retarded.
Claim 11
Dependent Claim
23 words
The composition according to claim 8 wherein said hard polyester component contains a tetrahydrophthalic acid moiety in the middle of the polyester chain.
Claim 12
Dependent Claim
24 words
The composition according to claim 10 wherein said DCPD moiety and said tetrahydrophthalic acid moiety are post brominated to render the composition flame retarded.
Claim 13
Dependent Claim
19 words
The composition according to claim 1 wherein said soft polyester component contains a DCPD monomaleate moiety at each terminal.
Claim 14
Dependent Claim
31 words
The composition according to claim 12 wherein said soft polyester component contains a polyoxypropylene polyol moiety having a molecular weight from 600 to 6000 in the middle of the polyester chain.
Claim 15
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 1.
Claim 16
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 2.
Claim 17
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 4.
Claim 18
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 5.
Claim 19
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 8.
Claim 20
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 11.
Claim 21
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 13.
Claim 22
Dependent Claim
50 words
An unsaturated polyester resin composition comprising a hard unsaturated polyester component, a soft unsaturated polyester component and a cross-linking monomer, said soft polyester component containing a polyoxyalkylene segment having a molecular weight from 600 to 6000 in the backbone thereof, said hard polyester component being free from said polyoxyalkylene segment.
Claim 23
Dependent Claim
50 words
An unsaturated polyester resin composition comprising a hard unsaturated polyester component, a soft unsaturated polyester component and a cross-linking monomer, said soft polyester component containing a polyoxyalkylene segment having a molecular weight from 600 to 6000 in the backbone thereof, said hard polyester component being free from said polyoxyalkylene segment.
Claim 24
Dependent Claim
29 words
The composition according to claim 21 wherein said soft polyester component contains said polyoxyalkylene segment in an amount from 25 to 75% by weight of the soft polyester component.
Claim 25
Dependent Claim
24 words
The composition according to claim 21 wherein the content of said polyoxyalkylene segment ranges from 5 to 30% by weight of the entire composition.
Claim 26
Dependent Claim
20 words
The composition according to claim 21 wherein said hard polyester component and said soft polyester component form a polymer blend.
Claim 27
Dependent Claim
22 words
The composition according to claim 21 wherein said hard polyester component and said soft polymer component are chemically linked to each other.
Claim 28
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 21.
Claim 29
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 22.
Claim 30
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 23.
Claim 31
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 24.
Claim 32
Dependent Claim
20 words
An electrical laminate comprising at least two layers of a fibrous substrate impregnated with the resin composition of claim 25.
References Cited (Backward Citations)
CA907245A
Cited
US3733370A
Cited
US4148765A
Cited
US4215032A
Cited
US4233432A
Cited
US4309519A
Cited
US4372800A
Cited
GB2073214A
Cited
US4419487A
Cited
US4363907A
Cited
US4535127A
Cited
US4456737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |