Patent US3962172A successfully refreshed from Google Patents.
US3962172A
Expired / Lapsed
US
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Glass fiber reinforced polyamide molding material of high impact strength
Assignee: BASF SE
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Filing: 1974-09-03
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Granted: 1976-06-08
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Expires: 1994-09-03
Abstract
Abstract Glass fiber reinforced polyamide molding material of high impact strength which contains: A. from 40 to 90 parts by weight of a polyamide; and B. from 10 to 60 parts by weight of glass fibers coated with a film-forming polymer containing from 4 to 50% by weight of units of the general formula: ##EQU1## in which R 1 is hydrogen or alkyl of one to five carbon atoms and R 2 is a saturated divalent hydrocarbon radical of two to ten carbon atoms; with or without C. a conventional stabilizer, flame retardant, pigment, filler or other additive.
Inventors
- 👤 Rolf Wurmb
- 👤 Peter Freyberg
- 👤 Kurt Wendel
- 👤 Wolfgang Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:22
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/08; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A glass fiber reinforced polyamide molding material of high impact strength which contains: a. from 40 to 90% by weight of a polyamide: and b. from 10 to 60% by weight of glass fibers which have been coated with a film-forming polymer containing from 4 to 50% by weight of units of the formula ##EQU3## in which R 1 is hydrogen or alkyl of one to five carbon atoms and R 2 is a saturated divalent hydrocarbon radical of two to ten carbon atoms, said coating being from about 0.1 to 10% by weight based on the weight of the coated fibers; with or without c. a conventional stabilizer, flame retardant, pigment, filler or other additive.
Claim 2
Dependent Claim
116 words
A glass fiber reinforced polyamide molding material of high impact strength which contains: a. from 40 to 90% by weight of a polyamide: and b. from 10 to 60% by weight of glass fibers which have been coated with a film-forming polymer containing from 4 to 50% by weight of units of the formula ##EQU3## in which R 1 is hydrogen or alkyl of one to five carbon atoms and R 2 is a saturated divalent hydrocarbon radical of two to ten carbon atoms, said coating being from about 0.1 to 10% by weight based on the weight of the coated fibers; with or without c. a conventional stabilizer, flame retardant, pigment, filler or other additive.
Claim 3
Dependent Claim
21 words
A polyamide molding material as claimed in claim 1 wherein the polyamide has a relative viscosity of from 2.0 to 4.5.
Claim 4
Dependent Claim
23 words
A polyamide molding material as claimed in claim 1 wherein the glass fibers have a mean length of from 0.1 to 1.0 mm.
Claim 5
Dependent Claim
22 words
A polyamide molding material as claimed in claim 1 wherein the glass fibers have a diameter of from 5 to 20 microns.
Claim 6
Dependent Claim
44 words
A polyamide molding material as claimed in claim 1 wherein the film-forming polymer contains from 40 to 90% by weight of an acrylate, from 1 to 30% by weight of acrylonitrile and/or acrylic acid in addition to the units of the general formula (I).
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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |