Patent US3923927A successfully refreshed from Google Patents.
US3923927A
Expired / Lapsed
US
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Polyester composition containing saturated polyester unsaturated terephthalate polyester and vinyl monomer
Assignee: Toyobo Co Ltd
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Filing: 1974-02-20
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Granted: 1975-12-02
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Expires: 1994-02-20
Abstract
Abstract An unsaturated polyester resin composition which can give a cure-molded product having excellent low shrink properties and low profile, which comprises A. 70 to 97 parts by weight of at least one unsaturated polyester resin comprising I. an unsaturated polyester comprising an Alpha , Beta unsaturated dicarboxylic acid component and a saturated dicarboxylic acid component in a ratio of 75/25 to 35/65 by mol, wherein the saturated dicarboxylic acid component contains 90 or more % by mol of terephthalic acid component (on the basis of the dicarboxylic acid component), and II. a vinyl monomer and/or allyl monomer which are copolymerizable with the unsaturated polyester, wherein the ratio of (I)/(II) is in a range of 80/20 to 30/70 by weight, and B. 3 to 30 parts by weight of at least one saturated polyester comprising a saturated dicarboxylic acid component which contains 50 to 90 % by mol of terephthalic acid component (on the basis of the saturated dicarboxylic acid component), and optionally, further a polymerization catalyst.
Inventors
- 👤 Hideo Miyake
- 👤 Toshiaki Fuzimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:35
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
148 words
AN UNSATURATED POLYESTER RESIN COMPOSITION COMPRISING A. 70 TO 97 PARTS BY WEIGHT OF AT LEAST ONE UNSATURATED POLYESTER RESIN COMPRISISING I. AN UNSATURATED POLYESTER COMPRISING AN A,B UNSATURATED DICARBOXYLIC ACID COMPONENT, A SATURATED DICARBOXYLIC ACIC COMPONENT IN A RATIO OF 75/25 TO 35/65 BY MOL, WHEREIN THE SATURATED DICARBOXYLIC ACID COMPONENT CONTAINS 90 OR MORE % BY MOL OF TEREPHTHALIC ACID (ON THE BASIS OF SATURATED DICARBOXYLIC ACID COMPONENT), AND A GLYCOL COMPONENT, AND II. A VINYL MONOMER AND/OR ALLYL MONOMER WHICH ARE COPOLYMERIZABLE WITH THE UNSATURATED POLYESTER, WHEREIN THE RATIO OF (I)/(II) IS IN A RANGE OF 80/20 TO 30/70 PARTS BY WEIGHT, AND B. 3 TO 30 PARTS BY WEIGHT OF AT LEAST ONE SATURATED POLYESTHER COMPRISING A SATURATED DICARBOXYLIC ACID COMPONENT WHICH CONTAINS 50 TO 90% BY MOL OF TEREPHTHALIC ACID (ON THE BASIS OF THE SATURATED DICARBOXYLIC ACID COMPONENT) AND A GLYCOL COMPONENT.
Claim 2
Dependent Claim
148 words
AN UNSATURATED POLYESTER RESIN COMPOSITION COMPRISING A. 70 TO 97 PARTS BY WEIGHT OF AT LEAST ONE UNSATURATED POLYESTER RESIN COMPRISISING I. AN UNSATURATED POLYESTER COMPRISING AN A,B UNSATURATED DICARBOXYLIC ACID COMPONENT, A SATURATED DICARBOXYLIC ACIC COMPONENT IN A RATIO OF 75/25 TO 35/65 BY MOL, WHEREIN THE SATURATED DICARBOXYLIC ACID COMPONENT CONTAINS 90 OR MORE % BY MOL OF TEREPHTHALIC ACID (ON THE BASIS OF SATURATED DICARBOXYLIC ACID COMPONENT), AND A GLYCOL COMPONENT, AND II. A VINYL MONOMER AND/OR ALLYL MONOMER WHICH ARE COPOLYMERIZABLE WITH THE UNSATURATED POLYESTER, WHEREIN THE RATIO OF (I)/(II) IS IN A RANGE OF 80/20 TO 30/70 PARTS BY WEIGHT, AND B. 3 TO 30 PARTS BY WEIGHT OF AT LEAST ONE SATURATED POLYESTHER COMPRISING A SATURATED DICARBOXYLIC ACID COMPONENT WHICH CONTAINS 50 TO 90% BY MOL OF TEREPHTHALIC ACID (ON THE BASIS OF THE SATURATED DICARBOXYLIC ACID COMPONENT) AND A GLYCOL COMPONENT.
Claim 3
Dependent Claim
39 words
The unsaturated polyester resin composition according to claim 1, wherein the saturated polyester has an acid value of 10 or less and an intrinsic viscosity ( eta ) of 0.25 to 0.80 (in phenol/tetrachloroethane: 6/4 by weight at 25*C).
Claim 4
Dependent Claim
35 words
The unsaturated polyester resin composition according to claim 1, wherein the unsaturated polyester comprises an Alpha , Beta -unsaturated dicarboxylic acid component and a saturated dicarboxylic acid component in a ratio of 65/35 to 45/55.
Claim 5
Dependent Claim
36 words
The unsaturated polyester resin composition according to claim 1, wherein the Alpha , Beta -unsaturated dicarboxylic acid component is a member selected from the group consisting of fumaric acid, maleic acid, itaconic acid and citraconic acid.
Claim 6
Dependent Claim
68 words
The unsaturated polyester resin composition according to claim 1, wherein the glycol component of the unsaturated polyester is a member selected from the group consisting of ethylene glycol, 1,2-propylene glycol, 1,3-butylene glycol, 1,4-butanediol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, triethylene glycol, tripropylene glycol, polyethylene glycol, polypropylene glycol, neopentyl glycol, 2,2,4-trimethyl-1,3-pentanediol, hydrogenated bisphenols, hydrogenated bisphenol-alkylene oxide addition products, bisphenol-alkylene oxide addition products, halogenated bisphenol-alkylene oxide addition products, cyclohexanediol and cyclohexanedimethanol.
Claim 7
Dependent Claim
59 words
The unsaturated polyester resin composition according to claim 1, wherein the glycol component of the saturated polyester is a member selected from the group consisting of ethylene glycol, 1,2-propylene glycol, 1,3-butylene glycol, 1,4-butanediol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, neopentyl glycol, 2,2,4-trimethyl-1,3-pentanediol, cyclohexanediol, cyclohexanedimethanol, hydrogenated bisphenol, hydrogenated bisphenol-alkylene oxide addition products and bisphenol-alkylene oxide addition products.
Claim 8
Dependent Claim
37 words
The unsaturated polyester resin composition according to claim 6, wherein the glycol is a member selected from the group consisting of ethylene glycol, neopentyl glycol and diethylene glycol, which is used alone or in a mixture thereof.
Claim 9
Dependent Claim
76 words
The unsaturated polyester resin composition according to claim 1, wherein the saturated dicarboxylic acid component contains 10 or less % by mol (on the basis of the saturated dicarboxylic acid component) of other saturated dicarboxylic acid selected from the group consisting of orthophthalic acid, isophthalic acid, succinic acid, adipic acid, sebacic acid, dodecamethylene dicarboxylic acid, tetra- and hexahydrophthalic acid, halogenated phthalic acid, hexachloro-endo-methylene-tetrahydrophthalic acid and endo-methylene-tetrahydrophthalic acid which is used alone or in a mixture therof.
Claim 10
Dependent Claim
53 words
The unsaturated polyester resin composition according to claim 1, wherein the vinyl monomer or allyl monomer copolymerizable with the unsaturated polyester is a member selected from the group consisting of styrene, vinyltoluene, divinylbenzene, monochlorostyrene, tert.-butylstyrene, Alpha -methylstyrene, methyl acrylate, methyl methacrylate, diallyl phthalate, diallyl fumarate, triallyl cyanurate, vinyl acetate and a mixture thereof.
Claim 11
Dependent Claim
14 words
The unsaturated polyester resin composition according to claim 9, wherein the monomer is styrene.
Claim 12
Dependent Claim
16 words
The unsaturated polyester resin composition according to claim 1, wherein a polymerization catalyst is further contained.
Claim 13
Dependent Claim
16 words
A cure-molded product prepared from the unsaturated polyester resin composition as set forth in claim 1.
References Cited (Backward Citations)
US3736278A
Cited
US3795716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |