US4670485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardenable polyester molding materials
Assignee: BASF SE
•
Filing: 1986-07-25
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Granted: 1987-06-02
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Expires: 2006-07-25
Abstract
Abstract A hardenable polyester molding material contains a mixture of I. an ethylenically unsaturated ester or a terminally unsaturated vinyl ester, II. copolymerizable monomers, III. 6-25% by weight, based on I+II, or a graft polymer P, in which there are grafted on A. 5-95% by weight of an elastomeric polymer, B. 95-5% by weight of a polyadduct, polycondensate or acrylic polymer which contains olefinic double bonds, with or without C. 0-90% by weight of vinyl monomers, and IV. 5-300% by weight, based on I+II, of fibrous reinforcing agents.
Inventors
- 👤 Anton Hesse
- 👤 Hellmut Buensch
- 👤 Bernhard Czauderna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:57
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
140 words
A hardenable polyester molding material which comprises a mixture of I. An ethylenically unsaturated polyester or a terminally unsatuarated vinyl ester, II. ethylenically unsaturated monomers copolymerizable with I, III. from 6 to 25% by weight, based on I+II, of a graft polymer P, in which there are grafted on A. from 5 to 95% by weight of an elastomeric polymer having a glass transition temperature of below 0° C., B. from 95 to 5% by weight of a polyalkylene oxide, having a mean content of 0.2 to 2 olfinic double bonds per polymer molecule, a number-average molecular weight of 1,000-100,000, and has a glass transition temperature of above 0° C., and C. from 0 to 90% by weight of vinyl monomers, the percentages totalling 100, and IV. from 5 to 300% by weight, based on I+II of fibrous reinforcing agents.
Claim 2
Dependent Claim
140 words
A hardenable polyester molding material which comprises a mixture of I. An ethylenically unsaturated polyester or a terminally unsatuarated vinyl ester, II. ethylenically unsaturated monomers copolymerizable with I, III. from 6 to 25% by weight, based on I+II, of a graft polymer P, in which there are grafted on A. from 5 to 95% by weight of an elastomeric polymer having a glass transition temperature of below 0° C., B. from 95 to 5% by weight of a polyalkylene oxide, having a mean content of 0.2 to 2 olfinic double bonds per polymer molecule, a number-average molecular weight of 1,000-100,000, and has a glass transition temperature of above 0° C., and C. from 0 to 90% by weight of vinyl monomers, the percentages totalling 100, and IV. from 5 to 300% by weight, based on I+II of fibrous reinforcing agents.
Claim 3
Dependent Claim
22 words
The molding material of claim 1, wherein the graft polymer P contains from 10 to 60% by weight of vinyl monomers (C).
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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) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |