Patent US4080349A successfully refreshed from Google Patents.
US4080349A
Expired / Lapsed
US
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Glass-fiber-reinforced thermoplastic molding compositions showing improved flowability and toughness
Assignee: BASF SE
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Filing: 1974-09-19
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Granted: 1978-03-21
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Expires: 1994-09-19
Abstract
Abstract Glass-fiber-reinforced thermoplastic molding compositions showing improved flowability and toughness and containing from 0.1 to 2% by weight, based on the total mixture, of a low molecular weight polyolefin wax to which from 2 to 50% by weight of polar side chains have been grafted.
Inventors
- 👤 Rolf Wurmb
- 👤 Dietrich-Wolfgang Mueller
- 👤 Hans Georg Dorst
- 👤 Klaus Bronstert
- 👤 Rainer Theysohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:20
CPC Classifications
C; C08; C08L; C08L77/00; C08J; C08J5/00; C08J5/04; C08J5/0405; C08J5/043; C08J5/10; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L101/00; C08L51/00; C08L51/06; C08J2377/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
Glass-fiber-reinforced thermoplastic molding compositions containing from about 10 to 60% by weight of glass fibers and containing from 0.1 to 2% by weight, based on the weight of the molding composition, of a polyolefin wax having a molecular weight of from about 1,000 to 20,000 to which from 2 to 50% by weight of polar side chains have been grafted, said side chains comprising copolymerized styrene and maleic anhydride, said chains containing styrene and maleic anhydride in alternating relationship.
Claim 2
Dependent Claim
79 words
Glass-fiber-reinforced thermoplastic molding compositions containing from about 10 to 60% by weight of glass fibers and containing from 0.1 to 2% by weight, based on the weight of the molding composition, of a polyolefin wax having a molecular weight of from about 1,000 to 20,000 to which from 2 to 50% by weight of polar side chains have been grafted, said side chains comprising copolymerized styrene and maleic anhydride, said chains containing styrene and maleic anhydride in alternating relationship.
Claim 3
Dependent Claim
22 words
Glass-fiber-reinforced thermoplastic molding compositions as claimed in claim 1, wherein the polyolefin wax has a molecular weight of from 2,000 to 10,000.
Claim 4
Dependent Claim
18 words
Glass-fiber-reinforced thermoplastic molding compositions as claimed in claim 2, wherein the polyolefin wax is low molecular weight polyethylene.
Claim 5
Dependent Claim
16 words
Glass-fiber-reinforced thermoplastic molding compositions as claimed in claim 2, wherein the thermoplastic material is a polyamide.
Claim 6
Dependent Claim
22 words
Glass-fiber-reinforced thermoplastic molding compositions as claimed in claim 2 and additionally containing from 0.05 to 1.5% by weight of a conventional lubricant.
Claim 7
Dependent Claim
14 words
Glass-fiber-reinforced thermoplastic molding compositions as claimed in claim 4 wherein said thermoplastic is polycaprolactam.
Claim 8
Dependent Claim
39 words
Glass-fiber-reinforced thermoplastic molding compositions as claimed in claim 6 wherein the amount of wax is from 0.3 to 1% by weight and wherein from 5 to 20% by weight of polar side chains have been grafted onto said wax.
References Cited (Backward Citations)
US3787344A
Cited
US3826074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |