US3963669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-fiber-reinforced polyester molding compositions of reduced flammability
Assignee: BASF SE
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Filing: 1975-02-13
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Granted: 1976-06-15
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Expires: 1995-02-13
Abstract
Abstract Glass-fiber-reinforced molding compositions of reduced flammability consisting of (A) a linear saturated polyester resin, (B) from 10 to 60 per cent by weight of glass fibers and (C) from 3 to 30 per cent by weight of a flame retardant. The compositions contain from 2 to 20 per cent by weight, based on the total weight of the molding composition, of a particulate water-insoluble silicate having a bulk density of more than 100 g/l, which prevents dripping of the composition when in contact with an open flame.
Inventors
- 👤 Rolf Wurmb
- 👤 Joachim Kunde
- 👤 Wolfgang Seydl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:26
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K13/00; C08K13/04; C08K3/01; C08K3/016; C08K3/02; C08K3/40; C08K5/00; C08K5/0008; C08K5/0066; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
67 words
Glass-fiber-reinforced molding compositions of reduced flammability consisting of A. a linear saturated polyester resin, B. from 10 to 60% by weight of glass fibers, C. from 3 to 30% by weight of a flame retardant and, additionally, D. from 2 to 10% by weight, based on the total weight of the molding composition, of a particulate water-insoluble silicate having a bulk density of more than 100 g/l.
Claim 2
Dependent Claim
67 words
Glass-fiber-reinforced molding compositions of reduced flammability consisting of A. a linear saturated polyester resin, B. from 10 to 60% by weight of glass fibers, C. from 3 to 30% by weight of a flame retardant and, additionally, D. from 2 to 10% by weight, based on the total weight of the molding composition, of a particulate water-insoluble silicate having a bulk density of more than 100 g/l.
Claim 3
Dependent Claim
23 words
A molding composition as set forth in claim 1 wherein said glass fibers have an average length of from 0.05 to 1 mm.
Claim 4
Dependent Claim
48 words
A molding composition as set forth in claim 1 wherein said glass fibers have an average length of from 0.10 to 0.4 mm and wherein said glass fibers are present in the amount of from 10 to 35% by weight based on the weight of the molding composition.
Claim 5
Dependent Claim
33 words
A molding composition as set forth in claim 3 wherein said flame retardant is present in an amount of from 5 to 15% by weight based on the weight of the molding composition.
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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |