US4125702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive for low profile polymerizable unsaturated polyester molding composition
Assignee: Occidental Chemical Corp
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Filing: 1977-05-02
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Granted: 1978-11-14
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Expires: 1997-05-02
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
2026-11-06 14:05
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
A low profile additive for polymerizable unsaturated polyester molding compositions which comprises discrete particles of less than about 50 microns diameter of a lightly cross-linked vinyl chloride polymer characterized by a glass transition temperature of below about 100° Celsius, and comprising the polymeric reaction product of vinyl chloride and about 0.1 to about 10 percent by weight of a polyfunctional monomer.
Claim 2
Dependent Claim
61 words
A low profile additive for polymerizable unsaturated polyester molding compositions which comprises discrete particles of less than about 50 microns diameter of a lightly cross-linked vinyl chloride polymer characterized by a glass transition temperature of below about 100° Celsius, and comprising the polymeric reaction product of vinyl chloride and about 0.1 to about 10 percent by weight of a polyfunctional monomer.
Claim 3
Dependent Claim
13 words
A low profile additive according to claim 1 having admixed therewith a pigment.
Claim 4
Dependent Claim
42 words
A low profile additive according to claim 1 comprising 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° Celsius and a polyfunctional monomer.
Claim 5
Dependent Claim
35 words
A low profile additive according to claim 3 wherein said monofunctional unsaturated comonomer is present in an amount of less than about 40 percent by weight, based on the total weight of the additive component.
Claim 6
Dependent Claim
32 words
A low profile additive according to claim 4 wherein said monofunctional unsaturated comonomer is a monomer capable of forming a linear homopolymer having a glass transition temperature of below about 0° Celsius.
Claim 7
Dependent Claim
25 words
A low profile additive according to claim 5 wherein said monofunctional unsaturated comonomer is selected from the group ethyl acrylate, n-butyl acrylate, and 2-ethylhexyl acrylate.
Claim 8
Dependent Claim
16 words
A low profile additive according to claim 6 wherein said monofunctional unsaturated comonomer is 2-ethylhexyl acrylate.
Claim 9
Dependent Claim
22 words
A low profile additive according to claim 7 comprising the polymeric reaction product of vinyl chloride, 2-ethyl hexyl acrylate, and diallyl maleate.
Claim 10
Dependent Claim
23 words
A low profile additive according to claim 8 comprising the polymeric reaction product of vinyl chloride, 2-ethylhexyl acrylate, 1,3-butylene diacrylate and diallyl maleate.
Claim 11
Dependent Claim
63 words
A low profile additive for polymerizable unsaturated polyester molding compositions which comprises discrete particles of less than about 50 microns diameter of a lightly cross-linked vinyl chloride polymer characterized by a glass transition temperature of below about 100° Celsius, and consisting essentially of the polymeric reaction product of vinyl chloride and about 0.1 to about 2.0 percent by weight of a polyfunctional monomer.
Claim 12
Dependent Claim
63 words
A low profile additive for polymerizable unsaturated polyester molding compositions which comprises discrete particles of less than about 50 microns diameter of a lightly cross-linked vinyl chloride polymer characterized by a glass transition temperature of below about 100° Celsius, and consisting essentially of the polymeric reaction product of vinyl chloride and about 0.1 to about 2.0 percent by weight of a polyfunctional monomer.
Claim 13
Dependent Claim
15 words
A low profile additive according to claim 10 wherein said polyfunctional monomer is diallyl maleate.
References Cited (Backward Citations)
US3230203A
Cited
US3196133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |