Patent US4080360A successfully refreshed from Google Patents.
US4080360A
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US
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Thermoplastic polybutylene terephthalate molding compositions
Assignee: BASF SE
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Filing: 1976-04-19
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Granted: 1978-03-21
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Expires: 1996-04-19
Abstract
Abstract Thermoplastic polybutylene terephthalate molding compositions of improved stability due to the presence of from 0.01 to 10 percent by weight, based on the total molding composition, of a lactam derivative.
Inventors
- 👤 Karl Schlichting
- 👤 Peter Horn
- 👤 Johannes Schlag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:18
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A stabilized polybutylene terephthalate molding composition in which the polybutylene terephthalate has a relative viscosity of from about 1.3 to 2.3, measured on an 0.5 percent strength solution in a 3:2 by weight phenol/o-dichlorobenzene mixture at 25° C, which composition contains from about 0.01 to 10 percent by weight based on the total molding composition, of a compound selected from the group consisting of ##STR21##
Claim 2
Dependent Claim
65 words
A stabilized polybutylene terephthalate molding composition in which the polybutylene terephthalate has a relative viscosity of from about 1.3 to 2.3, measured on an 0.5 percent strength solution in a 3:2 by weight phenol/o-dichlorobenzene mixture at 25° C, which composition contains from about 0.01 to 10 percent by weight based on the total molding composition, of a compound selected from the group consisting of ##STR21##
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) | 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 |