US3700751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding material from polyamide and acrylic ester of a t-aliphatic alcohol
Assignee: GEORG SCHMIDT THOMEE
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Filing: 1968-06-11
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Granted: 1972-10-24
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Expires: 1988-06-11
Abstract
Abstract Impact-resistant thermoplastic molding material based on polyamides and olefin polymers and methods for the production of the same by mixing polyamides and copolymers of an olefin and an acrylic and/or methacrylic ester of a tertiary alcohol under the action of shearing forces with simultaneous removal of gaseous elimination products.
Inventors
- 👤 Gerhard Mueller
- 👤 Helmut Doerfel
- 👤 Georg Schmidt-Thomee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:53
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/06; C08L77/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
31 words
1 to 40 parts by weight of a copolymer of an aliphatic olefin and 1 to 10 mole percent of the acrylic or methacrylic ester of a tertiary aliphatic alcohol, and
Claim 2
Dependent Claim
47 words
A process as claimed in claim 1 wherein a copolymer of ethylene and 1 to 10 mole percent of tert-butyl acrylate is used. 3. A process as claimed in claim 1 wherein a copolymer of ethylene and 1 to 10 mole percent of tert-butyl methacrylate is used.
Claim 3
Dependent Claim
50 words
optionally minor amounts of mineral acids, acid phosphates, stabilizers, mold relay agents, slip agents, crystallization accelerators, plasticizers, pigments, dyes and fillers at a shear rate of at least 250 seconds 1 at from 200* to 320*C for from 30 to 250 seconds with the simultaneous removal of gaseous elimination products.
Claim 4
Dependent Claim
14 words
A process as claimed in claim 1 wherein polycaprolactam is used as the polyamide.
Claim 5
Dependent Claim
14 words
A process as claimed in claim 1 wherein polyhexamethylene-adipamide is used as the polyamide.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |