US4043988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low profile polyester molding composition
Assignee: Occidental Chemical Corp
•
Filing: 1976-01-02
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Granted: 1977-08-23
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Expires: 1996-01-02
Abstract
Abstract Dimensionally stable, pigmentable polyester molding compositions comprise: A. polymerizable polyester component; and B. an additive component comprising discrete particles of less than about 50 microns diameter of a lightly cross-linked vinyl chloride polymer having a glass transition temperature of below about 100° C and which is chemically inert with respect to the polyester component and is swellable but insoluble therein. The additive component is a vinyl chloride polymer or copolymer lightly cross-linked with a suitable polyfunctional monomer, such as a diacrylate.
Inventors
- 👤 Victor F. G. Cooke
- 👤 Donald H. Thorpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:44
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
A molding composition comprising A. a polymerizable unsaturated polyester component; and B. an additive component comprising discrete particles of less than about 50 microns diameter of a cross-linked vinyl chloride polymer having a glass transition temperature of below about 100° C and which is chemically inert with respect to the polyester component and is swellable but insoluble therein, said additive component comprising the polymeric reaction product of vinyl chloride and at least one polyfunctional monomer.
Claim 2
Dependent Claim
75 words
A molding composition comprising A. a polymerizable unsaturated polyester component; and B. an additive component comprising discrete particles of less than about 50 microns diameter of a cross-linked vinyl chloride polymer having a glass transition temperature of below about 100° C and which is chemically inert with respect to the polyester component and is swellable but insoluble therein, said additive component comprising the polymeric reaction product of vinyl chloride and at least one polyfunctional monomer.
Claim 3
Dependent Claim
20 words
A molding composition according to claim 1 wherein the polyester component comprises an unsaturated polyester and a copolymerizable unsaturated monomer.
Claim 4
Dependent Claim
22 words
A molding composition according to claim 2 wherein the additive component is characterized by a glass transition temperature below about 75° C.
Claim 5
Dependent Claim
32 words
A molding composition according to claim 2 wherein the additive component comprises the polymeric reaction product of vinyl chloride and about 0.1 to about 10 percent by weight of a polyfunctional monomer.
Claim 6
Dependent Claim
32 words
A molding composition according to claim 4 wherein the additive component comprises the polymeric reaction product of vinyl chloride and about 0.1 to about 2.0 percent by weight of a polyfunctional monomer.
Claim 7
Dependent Claim
14 words
A molding composition according to claim 5 wherein said polyfunctional monomer is diallyl maleate.
Claim 8
Dependent Claim
45 words
A molding composition according to claim 4 wherein the additive component comprises the polymeric reaction product of vinyl chloride, at least one monofunctional unsaturated comonomer capable of forming a linear homopolymer having a glass transition temperature of below about 80° C, and a polyfunctional monomer.
Claim 9
Dependent Claim
33 words
A molding composition according to claim 7 wherein said monofunctional unsaturated comonomer is present in an amount of less than about 40 percent by weight, based on the total weight of additive component.
Claim 10
Dependent Claim
31 words
A molding composition according to claim 8 wherein said monofunctional unsaturated comonomer is a monomer capable of forming a linear homopolymer having a glass transition termperature of below about 0° C.
Claim 11
Dependent Claim
24 words
A molding composition according to claim 9 wherein said monofunctional unsaturated comonomer is selected from the group ethyl acrylate, n-butyl acrylate and 2-ethylhexyl acrylate.
Claim 12
Dependent Claim
15 words
A molding composition according to claim 10 wherein said monofunctional unsaturated comonomer is 2-ethylhexyl acrylate.
Claim 13
Dependent Claim
24 words
A molding composition according to claim 11 wherein said additive component comprises the polymeric reaction product of vinyl chloride, 2-ethylhexyl acrylate and diallyl maleate.
Claim 14
Dependent Claim
26 words
A molding composition according to claim 12 wherein said additive component comprises the polymeric reaction product of vinyl chloride, 2-ethylhexyl acrylate, 1,3-butylene diacrylate, ad diallyl maleate.
Claim 15
Dependent Claim
31 words
A molding composition according to claim 4 wherein the additive component is present in an amount of about 5 to about 45 parts by weight per 100 parts of polyester component.
Claim 16
Dependent Claim
13 words
The composition according to claim 14 when polymerized to form an infusible product.
References Cited (Backward Citations)
GB1201088A
Cited
US3718714A
Cited
US3830875A
Cited
US3721642A
Cited
US3801693A
Cited
US3842142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |