US4546126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retarding, reinforced moulding material based on thermoplastic polyesters and the use thereof
Assignee: Novartis Corp
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Filing: 1984-07-05
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Granted: 1985-10-08
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Expires: 2004-07-05
Abstract
Abstract The tendency to drip of the melt formed from reinforced moulding materials based on thermoplastic polyesters, provided with a flame-retarding finish, when the latter are subjected to an open flame can be prevented by adding phyllosilicates, and the reduction in the toughness properties thereby caused can be prevented by adding alkali metal salts of aliphatic C 6-22 monocarboxylic acids.
Inventors
- 👤 Franz Breitenfellner
- 👤 Thomas Kainmulle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:37
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; C08K13/00; C08K13/02; C08K3/00; C08K3/34; C08K3/346; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
104 words
A flame-retarding, reinforced polyester moulding material which contains (a) a thermoplastic polyester which is a poly-1,4-butylene terephthalate or a copolyester based on polyethylene terephthalate and poly-1,4-butylene terephthalate, (b) 3 to 50% by weight of a reinforcing filler, (c) 5 to 30% by weight of a flame-retarding additive, (d) 0.2 to 4.0% by weight of an unmodified phyllosilicate, or of a phyllosilicate modified with an organic ammonium salt, and (e) 0.05 to 2.0% by weight of an alkali metal salt of an aliphatic monocarboxylic acid having 6 to 22 C atoms, the percentages by weight being based on the total weight of the moulding material.
Claim 2
Dependent Claim
104 words
A flame-retarding, reinforced polyester moulding material which contains (a) a thermoplastic polyester which is a poly-1,4-butylene terephthalate or a copolyester based on polyethylene terephthalate and poly-1,4-butylene terephthalate, (b) 3 to 50% by weight of a reinforcing filler, (c) 5 to 30% by weight of a flame-retarding additive, (d) 0.2 to 4.0% by weight of an unmodified phyllosilicate, or of a phyllosilicate modified with an organic ammonium salt, and (e) 0.05 to 2.0% by weight of an alkali metal salt of an aliphatic monocarboxylic acid having 6 to 22 C atoms, the percentages by weight being based on the total weight of the moulding material.
Claim 3
Dependent Claim
13 words
A moulding material according to claim 1, wherein the polyester is poly-1,4-butylene terephthalate.
Claim 4
Dependent Claim
15 words
A moulding material according to claim 1, which contains glass fibres as the reinforcing filler.
Claim 5
Dependent Claim
28 words
A moulding material according to claim 1, which contains, as the flame-retarding additive, an organic chlorine or bromine compound on its own or in combination with antimony trioxide.
Claim 6
Dependent Claim
25 words
A moulding material according to claim 1, which contains, as the flame-retarding additive, a combination of antimony trioxide with brominated polystyrene, N,N'-ethylene-bis-tetrabromophthalimide or decabromodiphenyl ether.
Claim 7
Dependent Claim
15 words
A moulding material according to claim 1, which contains, as the component (d), a smectite.
Claim 8
Dependent Claim
22 words
A moulding material according to claim 6, wherein the smectite is a bentonite or montmorillonite modified with an organic ammonium salt compound.
Claim 9
Dependent Claim
16 words
A moulding material according to claim 1, which contains, as the component (d), dimethyldioctadecylammonium-bentonite or dimethyldioctadecylammonium-montmorillonite.
Claim 10
Dependent Claim
28 words
A molding material according to claim 1, which contains, as the component (e), potassium or sodium stearate or mixture thereof, or potassium or sodium oleate or mixture thereof.
Claim 11
Dependent Claim
15 words
A moulding material according to claim 1, which contains, as the component (e), potassium oleate.
Claim 12
Dependent Claim
63 words
A moulding material according to claim 1, wherein the proportions of components (b) to (e) independently of one another are: reinforcing filler (b) 10 to 50% by weight; flame-retarding additive (c) 10 to 20% by weight; phyllosilicate (d) 0.75 to 2.0% by weight; and component (e) 0.05 to 1.0% by weight, in each case based on the total weight of the moulding materials.
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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) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |