US4049749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmentable low-profile polyester molding compositions
Assignee: Occidental Chemical Corp
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Filing: 1975-12-02
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Granted: 1977-09-20
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Expires: 1995-12-02
Abstract
Abstract Polymerizable molding compositions having excellent pigmentability and dimensional stability comprise:
Inventors
- 👤 Donald H. Thorpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:16
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
118 words
A molding composition comprising A. a polymerizable unsaturated polyester; and B. an additive component, present in an amount of about 5 to about 45 parts by weight per 100 parts by weight of polyester component, comprising discrete particles of less than about 50 microns diameter of a cross-linked acrylate polymer characterized by a glass transition temperature of less than about 75° Celsius and which is chemically inert with respect to said polyester component and is swellable but insoluble therein, said acrylate polymer consisting essentially of the reaction product of about 75 to about 95 percent by weight of at least one monoacrylate monomer and about 5 to about 25 percent by weight of at least one polyacrylate monomer.
Claim 2
Dependent Claim
118 words
A molding composition comprising A. a polymerizable unsaturated polyester; and B. an additive component, present in an amount of about 5 to about 45 parts by weight per 100 parts by weight of polyester component, comprising discrete particles of less than about 50 microns diameter of a cross-linked acrylate polymer characterized by a glass transition temperature of less than about 75° Celsius and which is chemically inert with respect to said polyester component and is swellable but insoluble therein, said acrylate polymer consisting essentially of the reaction product of about 75 to about 95 percent by weight of at least one monoacrylate monomer and about 5 to about 25 percent by weight of at least one polyacrylate monomer.
Claim 3
Dependent Claim
28 words
A molding composition according to claim 1 wherein the additive component comprises a cross-linked acrylate polymer characterized by a glass transition temperature of less than about 50° C.
Claim 4
Dependent Claim
20 words
A molding composition according to claim 2 wherein the polyester component comprises an unsaturated polyester and a copolymerizable unsaturated monomer.
Claim 5
Dependent Claim
26 words
A molding composition according to claim 2 wherein the monoacrylate monomer consists essentially of a mixture of methyl methacrylate and at least one other monoacrylate monomer.
Claim 6
Dependent Claim
32 words
A molding composition according to claim 4 wherein the monoacrylate comprises a mixture of methyl methacrylate and at least one other monoacrylate monomer selected from n-butyl acrylate, ethyl acrylate, and 2-ethylhexyl acrylate.
Claim 7
Dependent Claim
15 words
A molding composition according to claim 5 wherein the polyacrylate monomer is a diacrylate monomer.
Claim 8
Dependent Claim
14 words
A molding composition according to claim 6 wherein the polyacrylate monomer is 1,3-butylene dimethacrylate.
Claim 9
Dependent Claim
22 words
A molding composition according to claim 7 wherein the additive component comprises a terpolymer of methyl methacrylate, n-butyl methacrylate, and 1,3-butylene dimethacrylate.
Claim 10
Dependent Claim
45 words
A molding composition according to claim 8 wherein the additive component comprises a terpolymer of about 5 to about 75 weight percent methyl methacrylate, about 15 to about 75 weight percent of n-butyl acrylate and about 5 to about 25 weight percent of 1,3-butylene dimethacrylate.
Claim 11
Dependent Claim
72 words
A low profile additive for molding compositions which comprises discrete particles of less than about 50 microns diameter of a cross-linked acrylate polymer characterized by a glass transition temperature of less than about 75° Celsius and which is the reaction product of about 75 to about 95 percent by weight of at least one monoacrylate monomer and about 5 to about 25 percent by weight of at least one acrylate polyacrylate monomer.
Claim 12
Dependent Claim
72 words
A low profile additive for molding compositions which comprises discrete particles of less than about 50 microns diameter of a cross-linked acrylate polymer characterized by a glass transition temperature of less than about 75° Celsius and which is the reaction product of about 75 to about 95 percent by weight of at least one monoacrylate monomer and about 5 to about 25 percent by weight of at least one acrylate polyacrylate monomer.
Claim 13
Dependent Claim
25 words
A low profile additive according to claim 10 comprising a cross-linked acrylate polymer characterized by a glass transition temperature of less than about 50° Celsius.
Claim 16
Dependent Claim
26 words
A low profile additive according to claim 11 wherein the monoacrylate monomer consists essentially of a mixture of methyl methacrylate and at least one other monoacrylate.
Claim 17
Dependent Claim
34 words
A low profile additive according to claim 11 wherein the monoacrylate monomer comprises a mixture of methyl methacrylate and at least one other monoacrylate monomer selected from n-butyl acrylate, ethyl acrylate, and 2-ethylhexyl acrylate.
Claim 18
Dependent Claim
15 words
A low profile additive according to claim 3 wherein the polyacrylate monomer is 1,3-butylene dimethacrylate.
Claim 19
Dependent Claim
20 words
A low profile additive according to claim 14 which comprises a terpolymer of methyl methacrylate, n-butyl acrylate and 1,3-butylene dimethacrylate.
Claim 20
Dependent Claim
44 words
A low profile additive according to claim 15 which comprises a terpolymer of about 5 to about 75 weight percent of methyl methacrylate, about 15 to about 75 weight percent of n-butyl acrylate and about 5 to about 25 weight percent of 1,3-butylene dimethacrylate.
Claim 21
Dependent Claim
13 words
A low profile additive according to claim 10 having admixed therewith a pigment.
Claim 22
Dependent Claim
13 words
The composition according to claim 3 when copolymerized to form an infusible product.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |