Patent US4051085A successfully refreshed from Google Patents.
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
•
Granted: 1977-09-27
•
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 03:46
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)
US3642672A
Cited
US3701748A
Cited
US3503921A
Cited
US3810863A
Cited
US3759873A
Cited
US3824201A
Cited
US3842142A
Cited
US3878137A
Cited
US3940350A
Cited
US3882078A
Cited
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 |