Flame-retarded resin composition

• US 20010049407A1
• Filed: 06/22/2001
• Published: 12/06/2001
• Est. Priority Date: 04/01/1998
• Status: Active Grant

• Current Assignee: Daihachi Chemical Industry Co., Ltd.
• Original Assignee: Daihachi Chemical Industry Co., Ltd.
• Inventors: Otsuki, Katsuichi
• Granted Patent: US 6,462,112 B2
• Time in Patent Office: Days
• US Class Current: 524/127
• CPC Class Codes: C08K 5/41 Compounds containing sulfur bound to oxygen
• CPC Class Codes: C08K 5/523 with hydroxyaryl compounds
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 55/02 ABS [Acrylonitrile-Butadiene-Styrene] polymers

Abstract

A flame-retarded resin composition contains: (A) an ABS resin; (B) an aromatic phosphate having a melting point of 80° C. or more and being represented by the following general formula (I):

, wherein R¹ to R⁴ are, the same or different, a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, excluding the case where R¹ to R⁴ are all hydrogen atoms; X is a bond, —CH₂—, —C(CH₃)₂—, —S—, —SO₂—, —O—, —CO— or —N═N—; n is an integer of 0 or 1; and m is an integer of 0 to 5; and (C) a novolak-type phenolic resin.

Claims

1. A flame-retarded ABS resin composition comprising:

ABS resin;

aromatic phosphate having a melting point of 80°

C. or more and being represented by the following general formula (I);

, wherein R¹ to R⁴ are, the same or different, hydrogen or alkyl having 1 to 3 carbon atoms, with the proviso that R¹ to R⁴ cannot all be hydrogen;

X is a bond, —

CH₂, —

S—

, —

CO—

or —

N═

N—

;

n is an integer of 0 or 1; and

m is an integer of 0 to 5; and

novolak-type phenolic resin.

2. The flame-retarded resin composition of

claim 1

wherein n is 1.

3. The flame-retarded resin composition of

claim 1

wherein wherein the ABS resin, the aromatic phosphate and the novolak-type phenolic resin are blended in a ratio of 100:

3 to 30;

3 to 30 parts by weight.

4. The flame-retarded resin composition of

claim 1

, wherein the ABS resin, the aromatic phosphate and the novolak-type phenolic resin are blended in a ratio of 100:

5 to 20;

5 to 20 parts by weight.

5. The flame-retarded resin composition of

claim 1

, wherein the ABS resin, the aromatic phosphate and the novolak-type phenolic resin are blended in a ratio of 100:

10 to 15;

5 to 10 parts by weight.

6. The flame-retarded ABS resin composition of

claim 1

, wherein the aromatic phosphate of the general formula (I) is a compound represented by the following general formula (II):

7. The flame-retarded ABS resin composition of

claim 6

, wherein the aromatic phosphate of the general formula (II) is a compound represented by the following general formula (III):

8. The flame-retarded ABS resin composition of

claim 7

, wherein R⁵ and R⁶ in the general formula (III) are each a methyl group.

9. The flame-retarded ABS resin composition of

claim 1

, wherein the aromatic phosphate of the general formula (I) is a compound represented by the following general formula (1):

10. The flame-retarded resin composition of

claim 1

, wherein the novolak-type phenolic resin is phenol-formaldehyde novolak resin having a molecular weight of 300 to 10,000.

11. The flame-retarded resin composition of

claim 6

wherein n is 1.

12. The flame-retarded resin composition of

claim 7

wherein n is 1.

13. The flame-retarded resin composition of

claim 6

, wherein the aromatic phosphate has the following formula:

14. The flame-retarded resin composition of

claim 6

, wherein the aromatic phosphate has the following formula:

15. The flame-retarded resin composition of

claim 6

, wherein the aromatic phosphate has the following formula:

16. The flame-retarded resin composition of

claim 6

, wherein the aromatic phosphate has the following formula:

17. The flame-retarded resin composition of

claim 6

, wherein the aromatic phosphate has the following formula:

18. A method for making a flame-retarded ABS resin composition comprising

blending aromatic phosphate into ABS resin, the aromatic phosphate having a melting point of 80°

C. or more and being represented by the following general formula (I);

, wherein R¹ to R⁴ are, the same or different, hydrogen or alkyl having 1 to 3 carbon atoms, with the proviso that R¹ to R⁴ cannot all be hydrogen;

X is a bond, —

CH₂, —

S—

, —

CO—

or —

N═

N—

;

n is an integer of 0 or 1; and

m is an integer of 0 to 5; and

blending novolak-type phenolic resin into the ABS resin, thereby forming the flame-retarded ABS resin composition.

19. The method of

claim 18

wherein the aromatic phosphate has a blend ratio of 3 to 30 parts by weight to 100 parts by weight of the ABS resin and the novolak-type phenolic resin has a blend ratio of 3 to 30 parts by weight to 100 parts by weight of the ABS resin.

20. The method of

claim 19

wherein the aromatic phosphate has a blend ratio of 5 to 20 parts by weight to 100 parts by weight of the ABS resin and the novolak-type phenolic resin has a blend ratio of 5 to 20 parts by weight to 100 parts by weight of the ABS resin.

21. The method of

claim 20

wherein the aromatic phosphate has a blend ratio of 10 to 15 parts by weight to 100 parts by weight of the ABS resin and the novolak-type phenolic resin has a blend ratio of 10 to 15 parts by weight to 100 parts by weight of the ABS resin.

22. The method of

claim 18

wherein the aromatic phosphate of the general formula (I) is a compound represented by the following general formula (II):

23. The method of

claim 22

wherein the aromatic phosphate of the general formula (II) is a compound represented by the following general formula (III):

24. The method of

claim 23

wherein R⁵ and R⁶ are in the general formula (III) are each methyl.

25. The method of

claim 18

wherein the aromatic phosphate of the general formula (I) is a compound represented by the following formula:

26. The method of

claim 18

wherein the novolak-type phenolic resin is phenol-formaldehyde novolak resin having a molecular weight of 300 to 10,000.

27. The method of

claim 22

, wherein the aromatic phosphate has the following formula:

28. The method of

claim 22

, wherein the aromatic phosphate has the following formula:

29. The method of

claim 22

, wherein the aromatic phosphate has the following formula:

30. The method of

claim 22

, wherein the aromatic phosphate has the following formula:

31. The method of

claim 22

, wherein the aromatic phosphate has the following formula:

32. The method of

claim 18

wherein n is 1.

33. The method of

claim 22

wherein n is 1.

34. The method of

claim 23

wherein n is 1.