US4315849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-resistant plastics moulding material
Assignee: BASF Corp
•
Filing: 1980-08-22
•
Granted: 1982-02-16
•
Expires: 2000-08-22
Abstract
Abstract Flame-resistant plastics moulding material formed from a polymer, preferably a thermoplast, and a halogenated benzimidazolone or halogenated benzimidazolone derivative, such as N,N'-di-(2-hydroxyethyl)-4,5,6,7-tetrabromobenzimidazolone or 4,5,6,7-tetrabromobenzimidazolone calcium, as a flame-resistant agent. The flame-resistant agent is added to the polymer at any suitable stage of production by a simple mixing together of the constituents, whereby this flame-resistant agent must not react chemically with the polymer.
Inventors
- 👤 Lothar Buxbaum
- 👤 Jurgen Habermeier
- 👤 Franz Breitenfellenr
- 👤 Thomas Kainmuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; C08K5/3447
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
A flame-resistant plastics molding composition which comprises (a) at least one polymer other than a polysulfone in admixture with (b) 5 to 30% by weight of said polymer of a halogenated benzimidazolone of formula I ##STR3## wherein X is chlorine, bromine or a mixture thereof, n is a number from 1 to 4 inclusive, and R 1 and R 2 independently of one another are each hydrogen, --CH 2 OH, --CH 2 --CH 2 OH, ##STR4## in which a is 3 or 4; or R 1 and R 2 are each --CH 2 CH 2 COOR 3 or --CH 2 COOR 3 in which R 3 is hydrogen, alkyl having 1 to 18 C atoms, an alkali metal ion, one equivalent of an alkaline earth metal ion or one equivalent of zinc ion; or R 1 and R 2 are each an alkali metal ion, one equivalent of an alkaline earth metal ion, or one equivalent of zinc ion; with the proviso that none of component (b) chemically reacts with said polymer (a).
Claim 2
Dependent Claim
173 words
A flame-resistant plastics molding composition which comprises (a) at least one polymer other than a polysulfone in admixture with (b) 5 to 30% by weight of said polymer of a halogenated benzimidazolone of formula I ##STR3## wherein X is chlorine, bromine or a mixture thereof, n is a number from 1 to 4 inclusive, and R 1 and R 2 independently of one another are each hydrogen, --CH 2 OH, --CH 2 --CH 2 OH, ##STR4## in which a is 3 or 4; or R 1 and R 2 are each --CH 2 CH 2 COOR 3 or --CH 2 COOR 3 in which R 3 is hydrogen, alkyl having 1 to 18 C atoms, an alkali metal ion, one equivalent of an alkaline earth metal ion or one equivalent of zinc ion; or R 1 and R 2 are each an alkali metal ion, one equivalent of an alkaline earth metal ion, or one equivalent of zinc ion; with the proviso that none of component (b) chemically reacts with said polymer (a).
Claim 3
Dependent Claim
13 words
A composition according to claim 1, which contains as polymer a thermoplastic material.
Claim 4
Dependent Claim
26 words
A composition according to claim 2, which contains a polyester based on an aliphatic, cycloaliphatic and/or aromatic dicarboxylic acid and an aliphatic, cycloaliphatic and/or aromatic diol.
Claim 5
Dependent Claim
38 words
A composition according to claim 3, wherein the polyester contains at least 25 mol % of terephthalic acid radicals, and at least 25 mol % of alkylenediol radicals having 2 to 12 C atoms, relative to the polyester.
Claim 6
Dependent Claim
12 words
A composition according to claim 2, which contains as thermoplast a polyamide.
Claim 7
Dependent Claim
16 words
A composition according to claim 1, wherein n in the formula I is 3 or 4.
Claim 8
Dependent Claim
14 words
A composition according to claim 6, wherein X in the formula I is bromine.
Claim 9
Dependent Claim
25 words
A composition according to claim 1, wherein R 1 and/or R 2 in the formula I are hydrogen or an equivalent of a calcium ion.
Claim 10
Dependent Claim
24 words
A composition according to claim 1, which contains, relative to the polymer, 1 to 20 percent by weight of Sb 2 O 3 .
Claim 11
Dependent Claim
22 words
A composition according to claim 1, which contains, relative to the total material, 10 to 40 percent by weight of glass fibres.
References Cited (Backward Citations)
US2149494A
Cited
US2742447A
Cited
US3403036A
Cited
US3405136A
Cited
US3499085A
Cited
US3624024A
Cited
GB1298880A
Cited
US4056508A
Cited
US3954790A
Cited
US3997510A
Cited
US4011194A
Cited
US4108841A
Cited
DE2751969A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |