# US 4,396,736 A · Flame-proofed polyamide moulding materials

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- Number: US 4,396,736 A
- Document ID: US4396736A
- Status: Granted
- Kind: A
- Application number: 06/278,655
- Filed: 1981-06-29
- Granted: 1983-08-02
- Earliest claimed: 1980-07-21
- Assignees: Bayer Aktiengesellschaft
- Inventors: Rolf Dhein; Ludwig Rottmaier; Rudolf Merten; Wolfgang Siebourg
- Web page: https://patentgrep.com/patent/US4396736A

## CPC

- C08K 5/3472: Five-membered rings
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

Polyamide moulding compositions containing triazolidine-3,5-diones or reaction products thereof as flame retarding agents.

## Claims

### Claim 1

A self-extinguishing, optionally reinforced thermoplastic polyamide molding composition containing alkyl as a flame-proofing agent from 0.1 to 20% by weight of a compound selected from the group consisting of ##STR12## wherein R.sup.1 and R.sup.2 are each hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.4 -C.sub.6 cycloalkyl or phenyl substituted by CH.sub.3,
R.sup.3 is a C.sub.1 -C.sub.6 aliphatic, C.sub.4 -C.sub.10 cycloaliphatic or a CH.sub.3 -substituted C.sub.6 -C.sub.12 aromatic radical and
a is an integer from 2 to 5; ##STR13## wherein R.sup.5 individually is hydrogen; a C.sub.1 -C.sub.10 aliphatic radical; a C.sub.4 -C.sub.10 cycloaliphatic radical; a C.sub.7 -C.sub.10 araliphatic radical; a C.sub.6 -C.sub.10 aromatic radical; or one of said radicals substituted by halogen, hydroxy or C.sub.1 -C.sub.4 alkoxy;
R.sup.6 individually is a C.sub.1 -C.sub.10 aliphatic radical; a C.sub.4 -C.sub.10 cycloaliphatic radical; a C.sub.7 -C.sub.10 araliphatic radical; a C.sub.6 -C.sub.10 aromatic radical; or one of said radicals substituted by halogen, cyano, hydroxy, amino, C.sub.1 -C.sub.4 alkylamino, C.sub.1 -C.sub.4 dialkylamino, C.sub.1 -C.sub.4 alkoxy, ##STR14## hydroxycarbonyl or C.sub.2 -C.sub.4 alkoxycarbonyl; R.sup.5 and R.sup.6 taken together with the nitrogen atom to which each are joined form a cyclic C.sub.2 -C.sub.8 heterocyclic radical;
R.sup.7 is hydrogen; a C.sub.1 -C.sub.6 aliphatic radical; a C.sub.4 -C.sub.10 cycloaliphatic radical; a C.sub.7 -C.sub.10 araliphatic radical; a C.sub.6 -C.sub.10 aromatic radical or one of said radicals substituted by halogen or hydroxy and x is 0 to 2; ##STR15## wherein R.sup.3 ' is hydrogen, a C.sub.1 -C.sub.20 aliphatic radical, a C.sub.4 -C.sub.17 cycloaliphatic radical, a C.sub.7 -C.sub.17 araliphatic radical, or a C.sub.6 -C.sub.15 aromatic radical;
R.sup.5 and R.sup.6 are as defined above in (B);
a' is a integer of from 1 to 5;
b is an integer of from 1 to 2a' and
c is an integer of from 2a'-b and ##STR16## wherein R.sup.9 is hydrogen; a C.sub.2 -C.sub.10 alkylcarbonyl radical; a C.sub.1 -C.sub.10 aliphatic radical; C.sub.4 -C.sub.10 cycloaliphatic radical; a C.sub.7 -C.sub.10 araliphatic radical; a C.sub.6 -C.sub.10 aromatic radical or one of said radicals substituted by halogen or hydroxy;
R.sup.10 is a hydrogen; a C.sub.1 -C.sub.10 aliphatic radical; a C.sub.4 -C.sub.10 cycloaliphatic radical; a C.sub.7 -C.sub.10 araliphatic radical; a C.sub.6 -C.sub.10 aromatic radical; or one of said radicals substituted by halogen; hydroxy or C.sub.1 -C.sub.4 alkoxy; or a radical of the formula ##STR17## wherein R.sup.9 is as aforesaid; R.sup.11 is a C.sub.1 -C.sub.10 aliphatic radical; a C.sub.4 -C.sub.10 cycloaliphatic radical; a C.sub.7 -C.sub.10 araliphatic radical; a C.sub.6 -C.sub.10 aromatic radical; one of said radicals substituted by halogen, cyano, hydroxy, amino, C.sub.1 -C.sub.10 alkylamino, C.sub.1 -C.sub.10 dialkylamino, C.sub.1 -C.sub.10 alkoxy ##STR18## hydroxycarbonyl or C.sub.2 -C.sub.10 alkoxycarbonyl; a carbonyl group; a group of the formula ##STR19## wherein R.sup.4 is a bond; hydrogen; an amino group; a C.sub.1 -C.sub.20 aliphatic radical; a C.sub.4 -C.sub.17 cycloaliphatic radical; a C.sub.7 -C.sub.17 araliphatic radical; a C.sub.6 -C.sub.15 aromatic radical or one of said radicals substituted by halogen.

### Claim 2 (depends on 1)

A polyamide molding composition as claimed in claim 1 wherein in (B) and (C) R.sup.5 is hydrogen or lower alkyl and R.sup.6 is one of said radicals substituted by ##STR20##

### Claim 3 (depends on 1)

A polyamide molding composition as claimed in claim 1 wherein in (D) R.sup.11 is one of said radicals substituted by ##STR21##

### Claim 4 (depends on 1)

A polyamide molding composition as claimed in claim 1 wherein in (D) R.sup.11 is a group of said formula ##STR22## wherein R.sup.4 is a bond; hydrogen; an amino group; a C.sub.1 -C.sub.20 aliphatic radical; a C.sub.4 -C.sub.17 cycloaliphatic radical; a C.sub.7 -C.sub.17 araliphatic radical; a C.sub.6 -C.sub.15 aromatic radical or one of said radicals substituted by halogen.