US5395890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Styrene-based resin composition
Assignee: Idemitsu Kosan Co Ltd
•
Filing: 1990-04-17
•
Granted: 1995-03-07
•
Expires: 2010-04-17
Abstract
Abstract A styrene-based resin composition containing (A) a styrene-based resin with mainly syndiotactic configuration and (B) a thermoplastic resin other than the styrene-based resin exhibit excellent heat resistance and impact resistance. Optionally, the styrene-based resin composition may further contain (C) a rubber polymer and/or (D) an inorganic filler. More particularly, a composition containing 1-98% by weight (A) 1-98% by weight of a styrene-based resin with mainly syndiotactic configuration and 1-98% by weight (B) a polyethylene terephthalate resin or a polyester resin is disclosed.
Inventors
- 👤 Akikazu Nakano
- 👤 Takashi Sumitomo
- 👤 Keisuke Funaki
- 👤 Toshikazu Ijitsu
- 👤 Michihiro Sawada
- 👤 Masahiko Kuramoto
- 👤 Masakazu Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:31
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L25/16; C08L21/00; C08L23/00; C08L23/02; C08L53/00; C08L53/02; C08L71/00; C08L71/08; C08L71/10; C08L71/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
26 words
A styrene-based composition comprising (A) 1-98% by weight of a styrene-based resin with mainly syndiotactic configuration, and 1-98% by weight of (B) a polyethylene terephthalate resin.
Claim 2
Dependent Claim
26 words
A styrene-based composition comprising (A) 1-98% by weight of a styrene-based resin with mainly syndiotactic configuration, and 1-98% by weight of (B) a polyethylene terephthalate resin.
Claim 3
Dependent Claim
25 words
A styrene-based composition comprising (A) 1-98% by weight of a styrene-based resin with mainly syndiotactic configuration, and 1-98% by weight of (B) a polyester resin.
Claim 4
Dependent Claim
25 words
A styrene-based composition comprising (A) 1-98% by weight of a styrene-based resin with mainly syndiotactic configuration, and 1-98% by weight of (B) a polyester resin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |