US5135973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant polyester resin composition
Assignee: Polyplastics Co Ltd
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Filing: 1990-02-23
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Granted: 1992-08-04
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Expires: 2010-02-23
Abstract
Abstract A flame-retardant polyester resin composition includes a thermoplastic polyester resin, between 1 to 30 wt. % of an organic halogenated flame-retardant, between 5 to 60 wt. % of an inorganic filler, and between 0.5 to 20 wt. % of a phosphoric ester of the following formula (1): ##STR1## wherein R represents a divalent organic group, R' which may be the same or different, is selected from C 1 to C 20 aliphatic groups, C 3 to C 13 alicyclic groups and C 6 to C 18 aromatic groups, m represents a number of 1 to 30, and n represents an integer of 0 to 3.
Inventors
- 👤 Jun Fukasawa
- 👤 Matsushi Kogima
- 👤 Hayato Kurita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:54
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/02; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08K5/523
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A flame-retardant polybutylene terephthalate resin composition comprising, based on the total weight of the composition; (A) between 25 to 93.5 wt. % of a thermoplastic polybutylene base resin; (B) between about 1 to about 30 wt. % of an organic halogenated flame-retardant; (C) between about 5 to 60 wt. % of an inorganic filler material which is at least one selected from the group consisting of talc, clay, glass beads, glass powder and glass flakes; and (D) between about 1.0 to 10 wt. % of a phosphoric ester of the following formula (1): ##STR7## wherein R and R', which may be the same or different are each a divalent organic group selected from C 1 to C 20 aliphatic groups, C 3 to C 13 alicyclic groups, and C 6 to C 18 aromatic groups, m represents a number between 1 and 30, and n represents an integer between 0 and 3.
Claim 2
Dependent Claim
152 words
A flame-retardant polybutylene terephthalate resin composition comprising, based on the total weight of the composition; (A) between 25 to 93.5 wt. % of a thermoplastic polybutylene base resin; (B) between about 1 to about 30 wt. % of an organic halogenated flame-retardant; (C) between about 5 to 60 wt. % of an inorganic filler material which is at least one selected from the group consisting of talc, clay, glass beads, glass powder and glass flakes; and (D) between about 1.0 to 10 wt. % of a phosphoric ester of the following formula (1): ##STR7## wherein R and R', which may be the same or different are each a divalent organic group selected from C 1 to C 20 aliphatic groups, C 3 to C 13 alicyclic groups, and C 6 to C 18 aromatic groups, m represents a number between 1 and 30, and n represents an integer between 0 and 3.
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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) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |