US4051085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardenable moulding compositions containing a thermoplastic polymer a copolymerizable vinyl compound and a polyesterurethane
Assignee: Bayer AG
•
Filing: 1975-10-09
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Granted: 1977-09-27
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Expires: 1995-10-09
Abstract
Abstract Heat-hardenable moulding compositions of: A. from 3 to 30 parts by weight of a thermoplastic polymer, B. from 20 to 70 parts by weight of a copolymerizable vinyl compound, and C. from 20 to 70 parts by weight of a polyesterurethane containing α,β-unsaturated dicarboxylic acid radicals.
Inventors
- 👤 Bernhard Hess
- 👤 Karl Raichle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:27
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08L75/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A heat hardenable moulding composition which is a blend of preformed ingredients comprising a. from 3 to 30 parts by weight of a thermoplastic polymer having a molecular weight of 500 to 10,000,000, b. from 20 to 70 parts by weight of a copolymerizable vinyl compound, c. from 20 to 70 parts by weight of a polyesterurethane having α, β-ethylenically unsaturated dicarboxylic acid residues and a urethane group equivalent of at least 0.05 equivalents per 100 g. of polyesterurethane and d. a viscosity-increasing amount of a member selected from the group consisting of oxides and hydroxides of the metals of Group IIa of the Periodic Table.
Claim 2
Dependent Claim
106 words
A heat hardenable moulding composition which is a blend of preformed ingredients comprising a. from 3 to 30 parts by weight of a thermoplastic polymer having a molecular weight of 500 to 10,000,000, b. from 20 to 70 parts by weight of a copolymerizable vinyl compound, c. from 20 to 70 parts by weight of a polyesterurethane having α, β-ethylenically unsaturated dicarboxylic acid residues and a urethane group equivalent of at least 0.05 equivalents per 100 g. of polyesterurethane and d. a viscosity-increasing amount of a member selected from the group consisting of oxides and hydroxides of the metals of Group IIa of the Periodic Table.
Claim 3
Dependent Claim
19 words
A moulding composition according to claim 1, characterised in that the thermoplastic polymer is polystyrene or cellulose aceto- butyrate.
Claim 4
Dependent Claim
16 words
A moulding composition according to claim 1, characterised in that the copolymerisable vinyl monomer is styrene.
Claim 5
Dependent Claim
30 words
A moulding composition according to claim 1, characterised in that the unsaturated polyesterurethanes have a urethane group content of at least 0.1 urethane group equivalents per 100 g of polyesterurethane.
Claim 6
Dependent Claim
36 words
A moulding composition according to claim 1, characterized in that the unsaturated polyesterurethanes have been produced from oligomeric polyesters contaning α,β-unsaturated dicarboxylic acid radicals, having a molecular weight of less than 1,240 by reaction with polyisocyanates.
Claim 7
Dependent Claim
19 words
A moulding composition according to claim 1, characterised in that the unsaturated polyesterpolyurethane contains incorporated within it monofunctional isocyanate.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |