US4713408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polybutylene terephthalate resin composition
Assignee: Polyplastics Co Ltd
•
Filing: 1985-12-20
•
Granted: 1987-12-15
•
Expires: 2005-12-20
Abstract
Abstract A polybutylene terephthalate resin composition comprises polybutylene terephthalate, a sulfonate anionic antistatic agent and an oxidized polyolefin wax. It is improved in the antistatic property and useful as a part for an electric instrument.
Inventors
- 👤 Katsuhiko Takahashi
- 👤 Yoshihisa Tajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:15
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08K3/00; C08K3/34; C08K3/36; C08L; C08L67/00; C08L67/02; C08L91/00; C08L91/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
36 words
A polybutylene terephthalate resin composition which comprises polybutylene terephthalate, a sulfonate anionic antistatic agent and an oxidized polyolefin wax formed by thermally cracking polyolefins in an oxidizing atmosphere or by introduction of polar radicals during polymerization.
Claim 2
Dependent Claim
36 words
A polybutylene terephthalate resin composition which comprises polybutylene terephthalate, a sulfonate anionic antistatic agent and an oxidized polyolefin wax formed by thermally cracking polyolefins in an oxidizing atmosphere or by introduction of polar radicals during polymerization.
Claim 3
Dependent Claim
48 words
A polybutylene terephthalate resin composition as claimed in claim 1, which comprises 0.05 to 10 percent by weight, based on the total composition, of the antistatic agent and 3 to 200 parts by weight, based on 100 parts by weight of said antistatic agent, of said polyolefin wax.
Claim 4
Dependent Claim
32 words
A polybutylene terephthalate resin composition as claimed in claim 1, which further comprises 3 to 100 parts by weight, based on 100 parts by weight of said antistatic agent, of silica powder.
Claim 5
Dependent Claim
29 words
A polybutylene terephthalate resin composition as claimed in claim 1, which further comprises at least one member of the group consisting of a flame retarder and a reinforcing filler.
Claim 6
Dependent Claim
58 words
A polybutylene terephthalate resin according to claim 1, wherein said anionic antistatic agent is a metal salt of an alkyl sulfonic acid wherein the alkyl radical has 1 to 22 carbon atoms, or a metal salt of an alkyl substituted aromatic sulfonic acid having an aromatic hydrocarbon nucleus wherein the alkyl radical has 1 to 25 carbon atoms.
References Cited (Backward Citations)
US3562200A
Cited
US3741936A
Cited
US3663498A
Cited
US3769260A
Cited
US3884882A
Cited
US4010223A
Cited
JPS5247071A
Cited
US4026967A
Cited
JPS56159245A
Cited
US4368283A
Cited
US4317764A
Cited
US4401792A
Cited
US4429067A
Cited
US4558085A
Cited
US4554303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |