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US4052356A
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Molding compounds based on polybutylene terephthalate
Assignee: DuPont de Nemours Deutschland GmbH
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Filing: 1976-04-06
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Granted: 1977-10-04
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Expires: 1996-04-06
Abstract
Abstract Reinforced polybutylene terephthalate which contain kaolin have improved arc resistance with at the same time improved tracking resistance.
Inventors
- 👤 Franz Breitenfellner
- 👤 Josef Hrach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:56
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; H01B3/02; H01B3/08; H01B3/084
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
A moulding compound with improved arc resistance and tracking resistance, consisting of a. a polybutylene terephthalate, b. 5 to 50 percent by weight, referred to the total composition, of a kaolin, and c. 5 to 40 percent by weight, referred to the total composition, of a reinforcing filler, the amount of kaolin and reinforcing filler being at most 60 percent by weight of the total composition.
Claim 2
Dependent Claim
66 words
A moulding compound with improved arc resistance and tracking resistance, consisting of a. a polybutylene terephthalate, b. 5 to 50 percent by weight, referred to the total composition, of a kaolin, and c. 5 to 40 percent by weight, referred to the total composition, of a reinforcing filler, the amount of kaolin and reinforcing filler being at most 60 percent by weight of the total composition.
Claim 3
Dependent Claim
46 words
A moulding compound according to claim 1 which contains in addition 2 to 10 percent by weight, referred to the total composition, of a flameproofing agent, the amount of kaolin, reinforcing filler and flameproofing agent being at most 60 percent by weight of the total composition.
Claim 4
Dependent Claim
17 words
A moulding compound according to claim 1 which contains 10 to 40 percent by weight of kaolin.
Claim 5
Dependent Claim
42 words
A moulding compound according to claim 2 which contains as flameproofing agent 1 to 5 percent by weight of decabromobiphenyl and 0.5 to 2.5 percent by weight of antimony trioxide, the respective amounts being referred to the weight of the total composition.
Claim 6
Dependent Claim
24 words
A moulding compound according to claim 1 which contains 10 to 40 percent by weight, referred to the total composition, of a reinforcing filler.
Claim 7
Dependent Claim
14 words
A moulding composition according to claim 1 wherein the reinforcing filler is glass fibres.
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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |