US4672086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-extinguishing thermoplastic polyester molding materials
Assignee: BASF SE
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Filing: 1985-12-02
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Granted: 1987-06-09
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Expires: 2005-12-02
Abstract
Abstract Self-extinguishing thermoplastic polyester molding materials containing linear aromatic polyesters, polyphenylene ethers and additives contain A. from 20 to 50% by weight of polyethylene terephthalate and/or polybutylene terephthalate, as much as 20 mol % of which may be modified with other dicarboxylic acids and/or diols, B. from 10 to 40% by weight of one or more polyphenylene ethers, C. from 5 to 15% by weight of one or more alkali metal or alkaline earth metal phosphates, high-boiling phosphoric acid esters, phosphorous acid esters, phosphinic acid esters or phosphonous acid esters or organic phosphine oxides, D. from 5 to 30% by weight of framework-forming fillers, E. from 0 to 30% by weight of one or more aromatic polycarbonates, F. from 0 to 30% by weight of glass fibers, G. from 0 to 20% by weight of one or more elastomeric polymers, H. from 0 to 20% by weight of one or more styrene polymers, the percentages of components A to H summing to 100, and I. if required, additives in effective amounts.
Inventors
- 👤 Erhard Seiler
- 👤 Juergen Hambrecht
- 👤 Gerhard Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K13/00; C08K13/02; C08K3/34; C08K5/00; C08K5/49; C08L; C08L25/00; C08L51/00; C08L67/00; C08L67/02; C08L69/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
A self-extinguishing thermoplastic molding material comprising A. from 20 to 50% by weight of polyethylene terephthalate and/or polybutylene terephthalate, as much as 20 mol % of which may be modified with other dicarboxylic acids and/or diols, B. from 10 to 40% by weight of polyphenylene ether polymers disubstituted ortho to the ether oxygen atom by alkyl of not more than four carbon atoms which does not possess a tertiary α-hydrogen atom, phenyl which is unsubstituted or substituted by alkyl of not more than four carbon atoms, or alkoxy of not more than 6 carbon atoms, C. from 5 to 15% by weight of a member selected from the group consisting of alkali metal phosphates, alkaline earth metal phosphate, high-boiling phosphoric acid esters, phosphorous acid esters, phosphinic acid esters, organic phosphine oxides and mixtures thereof, D. from 5 to 30% by weight of framework-forming fillers, E. from 0 to 30% by weight of one or more aromatic polycarbonates, F. from 0 to 30% by weight of glass fibers, G. from 0 to 20% by weight of one or more elastomeric polymers, H. from 0 to 20% by weight of one or more styrene polymers, the percentages of components A to H summing to 100.
Claim 2
Dependent Claim
203 words
A self-extinguishing thermoplastic molding material comprising A. from 20 to 50% by weight of polyethylene terephthalate and/or polybutylene terephthalate, as much as 20 mol % of which may be modified with other dicarboxylic acids and/or diols, B. from 10 to 40% by weight of polyphenylene ether polymers disubstituted ortho to the ether oxygen atom by alkyl of not more than four carbon atoms which does not possess a tertiary α-hydrogen atom, phenyl which is unsubstituted or substituted by alkyl of not more than four carbon atoms, or alkoxy of not more than 6 carbon atoms, C. from 5 to 15% by weight of a member selected from the group consisting of alkali metal phosphates, alkaline earth metal phosphate, high-boiling phosphoric acid esters, phosphorous acid esters, phosphinic acid esters, organic phosphine oxides and mixtures thereof, D. from 5 to 30% by weight of framework-forming fillers, E. from 0 to 30% by weight of one or more aromatic polycarbonates, F. from 0 to 30% by weight of glass fibers, G. from 0 to 20% by weight of one or more elastomeric polymers, H. from 0 to 20% by weight of one or more styrene polymers, the percentages of components A to H summing to 100.
Claim 3
Dependent Claim
15 words
A molding material as defined in claim 1, which contains poly-(2,6-dimethyl-1,4-phenylene) ether as component B.
Claim 4
Dependent Claim
55 words
A molding material as defined in claim 1, which contains, as component C, a member selected from the group consisting of sodium tripolyphosphate, a triaryl phosphate, a triaryl phoshite, a triarylphosphine oxide, a diaryl mono- or diphosphonite, a diaryl phosphinate a phosphate or phosphite which is substituted by both alkyl and aryl and mixtures thereof.
Claim 5
Dependent Claim
17 words
A molding material as defined in claim 1, which contains, as component D, calcined kaolin and/or wollastonite.
Claim 6
Dependent Claim
21 words
A thermoplastic molding material as defined in claim 1, which contains, as component E, an aromatic polycarbonate derived from bisphenol A.
Claim 7
Dependent Claim
23 words
A thermoplastic molding material as defined in claim 1, which contains, as component G, an n-butyl acrylate rubber grafted with styrene and acrylonitrile.
Claim 8
Dependent Claim
21 words
A molding material as defined in claim 1, which contains, as component G, a polybutadiene rubber grafted with styrene and acrylonitrile.
Claim 9
Dependent Claim
20 words
A molding material as defined in claim 1, which contains, as component G, a polybutadiene rubber grafted with methyl methacrylate.
Claim 10
Dependent Claim
29 words
A molding material as defined in claim 1, which contains, as component G, a polybutadiene rubber grafted with styrene and/or styrene/acrylonitrile and, in a second state, with methyl methacrylate.
Claim 11
Dependent Claim
38 words
A molding material as defined in claim 1, which contains, as component H, polystyrene having a content of from 2 to 20% by weight of an elastomeric polymer with a glass transition temperature of less than 0° C.
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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) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |