Flame retardant resin composition

Patent metadata

Field	Value
Publication number	US-10266648-B2
Application number	US-201715634582-A
Country	US
Kind code	B2
Filing date	Jun 27, 2017
Priority date	Jun 27, 2016
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

A flame-retarded resin includes at least one resin for which flame retardant capability is desired and at least one triaryl silicon-containing compound (I) as flame retardant in admixture therewith and/or chemically bonded, e.g., grafted, to the resin.

First claim

The invention claimed is:

1. A flame retardant resin composition comprising (a) at least one resin which does not contain a triarylsilyloxy group, and (b) at least one triaryl silicon-containing compound of general formula (I):

wherein each Ar independently is an unsubstituted aryl group of from about 6 to about 20 carbon atoms or substituted aryl group of from about 6 to about 20 carbon atoms; each R 2 and R 3 independently is a monovalent hydrocarbon group of from 1 to about 8 carbon atoms; each R 1 independently is a divalent saturated hydrocarbon group of from 1 to about 45 carbon atoms optionally containing one or more heteroatoms, or an alkenyl or alkynyl group up to 45 carbon atoms; G is hydrogen, a hydroxyl group, an acyclic organic group of from 1 to about 45 carbon atoms, a cyclic organic group of from 3 to about 20 carbon atoms, an acyclic or cyclic silicon-containing organic group of from 1 to about 50 carbon atoms optionally containing one or more heteroatoms, or a polymer moiety derived from a resin for which flame retardant capability is desired, G having a valence equal to subscript n; subscript m is from 1 to about 50; and, subscript n is from 1 to about 50.

2. The flame retardant resin composition of claim 1 wherein each R 1 is independently a divalent saturated hydrocarbon group of from 2 to about 45 carbon atoms.

3. The flame retardant resin composition of claim 1 wherein, in the triaryl silicon-containing compound (I), each Ar independently is an aryl group selected from the group consisting of phenyl, tolyl, xylyl, naphthyl, naphthalenyl, anthracenyl and phenanthryl.

4. The flame retardant resin composition of claim 1 wherein, in the triaryl silicon-containing compound (I), each Ar is phenyl.

5. The flame retardant resin composition of claim 1 wherein, in the triaryl silicon-containing compound (I), G is other than a polymer moiety and the at least one resin which does not contain the triarylsilyloxy group is selected from the group consisting of polyolefins, polycarbonates, polyesters, polyimides, polyamides, polystyrenes, polyurethanes, polyisocyanurates, polyepoxides, phenol formaldehyde resins, ABS terpolymer, SAN rubber, polyether ether ketone polymer, and mixtures thereof.

6. The flame retardant resin composition of claim 5 wherein the resin which does not contain a triarylsilyloxy group is a polycarbonate or polycarbonate-containing resin blend.

7. The flame retardant resin composition of claim 5 comprising at least one other flame retardant additive, wherein component (b) is present from about 10 to about 80 weight percent based on the total weight of component (b) and the at least one other flame retardant additive.

8. The flame retardant resin composition of claim 1 wherein, in triaryl silicon-containing compound (I), G is a polymer moiety derived from a resin selected from the group consisting of polyolefins, polycarbonates, polyesters, polyimides, polyamides, polystyrenes, polyurethanes, polyisocyanurates, polyepoxides, phenol formaldehyde resins, ABS terpolymer, SAN rubber, polyether ether ketone polymer, and mixtures thereof.

9. The flame retardant resin composition of claim 1 wherein, in the triaryl silicon-containing compound (I), each R 1 is a divalent alkyl radical of from 1 to about 45 carbon atoms.

10. The flame retardant resin composition of claim 1 wherein, in the triaryl silicon-containing compound (I), G is an alkoxysilyl group of the formula —SiR 4 a (OR 5 ) 3-a wherein each occurrence of R 4 independently is a monovalent hydrocarbon group of from 1 to about 12 carbon atoms, each occurrence of R 5 independently is a monovalent hydrocarbon group of from 1 to about 50 carbon atoms optionally containing one or more heteroatoms, subscript a is 0 to 2 and, optionally, when subscript a is 0 or 1, two R 5 groups may be bonded together through a covalent bond to form a cyclized alkoxylsilyl group.

11. The flame retardant resin composition of claim 1 , wherein component (b) is present from about 0.1 to about 60 weight percent, based on the total weight of components (a) and (b).

12. The flame retardant resin composition of claim 1 further comprising at least one flame retardant compound other than the triaryl silicon-containing compound (I).

13. The flame retardant resin composition of claim 1 , wherein in the triaryl silicon-containing compound (I), subscript m is 1.

14. The flame retardant resin composition of claim 1 , wherein in the triaryl silicon-containing compound (I), subscript m is from 2 to about 50.

15. The flame retardant resin composition of claim 1 , wherein in the triaryl silicon-containing compound (I), G is selected from the group consisting of:
(a) an linear or branched acyclic organic group of up to about 45 carbon atom or cyclic organic group of from 3 to about 20 carbon atoms either of which is a saturated or unsaturated hydrocarbon radical optionally containing at least one of a heteroatom, carbonyl group, ester group, amide group or hydroxyl group, and having a valency of from 1 to about 25, subject to the limitation that the valence of the organic group is equal to the value of subscript n;
(b) a cyclic silicone of general formula (II):

wherein:
each R 2 and R 3 independently is a monovalent hydrocarbon radical containing from 1 to about 8 carbon atoms; subscript q is an integer of from 1 to about 6, subscript x is 0 to about 8, and subscript y is an integer of from 1 to about 8, subject to the limitation that the value of subscript n=y;
(c) an acyclic silicone group of general formula (III):
M b M* c D d D* e T f T* g Q h A i B j C k   (III)

wherein:
M=R 4 R 5 R 6 SiO 1/2 ,
M*=R 4 R*R 6 SiO 1/2
D=R 7 R 8 SiO 2/2 ,
D*=R 7 R*SiO 2/2
T=R 9 SiO 3/2 ,
T*=R*SiO 3/2 ,
Q=SiO 4/2 ,
A=O 1/2 Si(R 10 )(R 11 )R 12 Si(R 13 )(R 14 )O 1/2
B=O 1/2 Si(R 15 )(R 16 )R 17 Si(R 18 )O 2/2
C=O 1/2 Si(R 19 )(R 20 )R 21 SiO 3/2

wherein:
R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 13 , R 14 , R 15 , R 16 , R 18 , R 19 and R 20 each independently is selected from the group consisting of —OR 22 and monovalent hydrocarbon radical containing from 1 to about 20 carbon atoms, optionally containing at least one of a heteroatom selected from the group consisting of oxygen, nitrogen and sulfur, an aromatic group of from 6 to about 10 carbon atoms, and a hydroxyl group; R 12 , R 17 and R 21 are each independently a divalent hydrocarbon group of from 1 to about 8 carbon atoms; R 22 is a monovalent hydrocarbon of from 1 to about 20 carbon atoms, R* is a divalent hydrocarbon of from 1 to about 8 carbon atoms where one of the valences of R* is bound to R 1 , and, subscripts b, c, d, e, f, g, h, i, j and k are zero or positive subject to the limitation b+c+d+e+f+g+h+i+j+k<1000, provided, c+e+g≥1;
(d) an alkoxysily group —SiR 4 a (OR 5 ) 3-a wherein each occurrence of R 4 and R 5 is independently methyl, ethyl, propyl or isopropyl and a is 0 or 1, or cyclized alkoxysilyl group in which two R 5 groups are bonded together through a covalent bond; and,
(e) a polymer moiety.

16. The flame retardant resin composition of claim 1 wherein in triaryl silicon-containing compound (I), each R 1 independently is a divalent alkyl group containing from 1 to about 6 carbon atoms.

17. The flame retardant resin composition of claim 1 wherein in triaryl sil

Assignees

• Momentive Performance Mat Inc

Inventors

• Alam Samim
• Suenaga Koji
• Rojas-Wahl Roy

Classifications

• C08G77/50 Primary

  by carbon linkages · CPC title

• C08L101/00

  Compositions of unspecified macromolecular compounds · CPC title

• C08L83/00

  Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers · CPC title

• C08G77/38

  Polysiloxanes modified by chemical after-treatment · CPC title

• C08G69/48

  Polymers modified by chemical after-treatment · CPC title