US4187353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamable polymer material
Assignee: Roehm GmbH Darmstadt
•
Filing: 1978-06-06
•
Granted: 1980-02-05
•
Expires: 1998-06-06
Abstract
Abstract What is disclosed is a foamable polymer composition comprising (A) a copolymer of 20-99.99 percent by weight of a member selected from the group consisting of acrylic acid and methacrylic acid, 0-79.99 percent by weight of a further ethylenically unsaturated monomer copolymerizable therewith, and 0.01-5 percent by weight of a member selected from the group consisting of metal salts of acrylic acid and methacrylic acid, and (B) a foaming agent compatible with said copolymer, methods for making such a composition, polymer foams prepared therefrom, and laminates of such foams with resin-impregnated fiber glass mats.
Inventors
- 👤 Guenter Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:48
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08J5/00; C08J5/12; C08J2333/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
A foamable polymer composition comprising (A) a copolymer of 20-99.99 percent by weight of a member selected from the group consisting of acrylic acid and methacrylic acid, 0-79.99 percent by weight of a further ethylenically unsaturated monomer copolymerizable therewith, and 0.01-5 percent by weight of a member selected from the group consisting of metal salts of acrylic acid and methacrylic acid, and (B) a foaming agent compatible with said copolymer.
Claim 2
Dependent Claim
70 words
A foamable polymer composition comprising (A) a copolymer of 20-99.99 percent by weight of a member selected from the group consisting of acrylic acid and methacrylic acid, 0-79.99 percent by weight of a further ethylenically unsaturated monomer copolymerizable therewith, and 0.01-5 percent by weight of a member selected from the group consisting of metal salts of acrylic acid and methacrylic acid, and (B) a foaming agent compatible with said copolymer.
Claim 3
Dependent Claim
25 words
A composition as in claim 1 wherein said copolymer comprises a member selected from the group consisting of acrylonitrile and methacrylonitrile as said further monomer.
Claim 4
Dependent Claim
35 words
A composition as in claim 2 wherein the ratio of the moles of acrylic acid and methacrylic acid present in said copolymer to the moles of acrylonitrile and methacrylonitrile therein is between 2:3 and 3:2.
Claim 5
Dependent Claim
33 words
A composition as in claim 1 wherein said foaming agent is selected from the group consisting of formamide, a monoalkylformamide, formic acid, water, and primary aliphatic monoalcohols having 3 to 8 carbon atoms.
Claim 6
Dependent Claim
54 words
A composition as in claim 1 wherein said salt is a member selected from the group consisting of acrylic acid salts and methacrylic acid salts of Mg 2+ , Zr 4+ , Cr 3+ , Co 2+ , Zn 2+ , Cd 2+ , Bi 3+ , TiO 2+ , and Pb 2+ .
Claim 7
Dependent Claim
83 words
The method of making a composition as in claim 1 which comprises free-radically copolymerizing a monomer mixture containing 20-99.99 percent by weight of a member selected from the group consisting of acrylic acid and methacrylic acid, 0-79.99 percent by weight of a further ethylenically unsaturated monomer copolymerizable therewith, and 0.01-5 percent by weight of a member selected from the group consisting of metal salts of acrylic acid and methacrylic acid, in the presence of a foaming agent compatible with the copolymer so formed.
Claim 8
Dependent Claim
42 words
A method as in claim 6 wherein said metal salt is formed in said monomer mixture before or during polymerization by reaction of acrylic acid and methacrylic acid with a metal compound other than the acrylate or methacrylate salt or the metal.
Claim 9
Dependent Claim
18 words
A method as in claim 7 wherein said metal compound is an acetate or acetylacetonate of the metal.
References Cited (Backward Citations)
US3513112A
Cited
US3489700A
Cited
US3379702A
Cited
US3673129A
Cited
US3553160A
Cited
US3734870A
Cited
US3627711A
Cited
US3726812A
Cited
US3708444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |