US4024204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic polybutylene terephthalate molding compositions containing alkoxylated polyamide
Assignee: BASF SE
•
Filing: 1975-06-30
•
Granted: 1977-05-17
•
Expires: 1995-06-30
Abstract
Abstract Polybutylene terephthalate molding compositions containing from 0.5 to 20% by weight, based on the polyester, of an alkoxylated polyamide finely distributed therein to reduce the tendency of the polyester to electrification.
Inventors
- 👤 Karl Schlichting
- 👤 Ludwig Beer
- 👤 Wolfgang Seydl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:13
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
Polybutylene terephthalate molding compositions showing a reduced tendency to electrification which comprises polybutylene terephthalate having a relative viscosity of from 1.3 to 1.8 as determined on a 0.5% solution at 25° C in a 3:2 mixture of phenol and o-dichlorobenzene, said polybutylene terephthalate containing from 0.5 to 20% by weight, based on the weight of polyester, of an alkoxylated polyamide finely dispersed therein, wherein said alkoxylated polyamide is the reaction product of monomeric alkylene oxides with polyamides in the ratio of 0.5:1 to 100:1, by weight.
Claim 2
Dependent Claim
86 words
Polybutylene terephthalate molding compositions showing a reduced tendency to electrification which comprises polybutylene terephthalate having a relative viscosity of from 1.3 to 1.8 as determined on a 0.5% solution at 25° C in a 3:2 mixture of phenol and o-dichlorobenzene, said polybutylene terephthalate containing from 0.5 to 20% by weight, based on the weight of polyester, of an alkoxylated polyamide finely dispersed therein, wherein said alkoxylated polyamide is the reaction product of monomeric alkylene oxides with polyamides in the ratio of 0.5:1 to 100:1, by weight.
Claim 3
Dependent Claim
18 words
Polybutylene terephthalate molding compositions as set forth in claim 1, wherein the alkoxylated polyamide is an ethoxylated polycaprolactam.
References Cited (Backward Citations)
GB1211118A
Cited
US3903042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |