Patent US3971752A successfully refreshed from Google Patents.
US3971752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retarding polyester composition
Assignee: Toray Industries Inc
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Filing: 1974-12-23
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Granted: 1976-07-27
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Expires: 1994-12-23
Abstract
Abstract A glass fiber reinforced flame retarding polyester composition containing decabromodiphenyl ether and/or decabromodiphenyl together with antimony trioxide wherein the ratio by weight of bromine atom to antimony atom is within the range of 0.15 to 0.29. The composition has excellent durability for thermal degradation and improved coloring properties in shaped form.
Inventors
- 👤 Toshikazu Aoyama
- 👤 Yukinori Kimata
- 👤 Hotuma Okasaka
- 👤 Hiroshi Kodama
- 👤 Naoya Yoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/02; C08K5/03; C08K7/00; C08K7/02; C08K7/04; C08K7/14; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
A flame retarding thermoplastic polyester composition reinforced by glass fiber which comprises 100 parts by weight of a glass fiber reinforced thermoplastic polyester, 2 to 19 parts by weight of at least one flame retarding agent selected from the group consisting of decabromodiphenylether and decabromodiphenyl, and 12 to 30 parts by weight of antimony trioxide, wherein the ratio by weight of bromine atom to antimony atom is within the range of 0.15 to 0.27, wherein the glass fiber reinforced thermoplastic polyester comprises 98 to 40 parts by weight of thermoplastic polyester and 2 to 60 parts by weight of glass fiber.
Claim 2
Dependent Claim
101 words
A flame retarding thermoplastic polyester composition reinforced by glass fiber which comprises 100 parts by weight of a glass fiber reinforced thermoplastic polyester, 2 to 19 parts by weight of at least one flame retarding agent selected from the group consisting of decabromodiphenylether and decabromodiphenyl, and 12 to 30 parts by weight of antimony trioxide, wherein the ratio by weight of bromine atom to antimony atom is within the range of 0.15 to 0.27, wherein the glass fiber reinforced thermoplastic polyester comprises 98 to 40 parts by weight of thermoplastic polyester and 2 to 60 parts by weight of glass fiber.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the glass fiber reinforced thermoplastic polyester comprises 5 to 40 parts by weight of glass fiber.
Claim 4
Dependent Claim
51 words
The composition of claim 1 wherein the thermoplastic polyester is constituted by at least one acid component selected from the group consisting of terephthalic acid, 2.6-naphthaline dicarboxylicacid and 1.2-bis-(4-carboxy-phenoxy)ethane, and at least one diol component selected from the group consisting of aliphatic glycols having a carbon number of 2 to 6.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the thermoplastic polyester is polybutyleneterephthalate.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein the thermoplastic polyester is polyethyleneterephthalate.
References Cited (Backward Citations)
US3751396A
Cited
US3671487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |