Flame retardant thermoplastic compositions

• US 4,401,778 A
• Filed: 09/17/1981
• Issued: 08/30/1983
• Est. Priority Date: 09/17/1981
• Status: Expired due to Fees

• Current Assignee: Albemarle Corporation
• Original Assignee: Saytech, Inc.
• Inventors: Barda, Henry J., Lesniewski, Joseph M.
• Primary Examiner(s): Hoke, Veronica P.
• Application Number:
  US06/303,159
• Time in Patent Office: 712 Days
• Field of Search: 260/326 C, 524/94, 524/89, 548/433, 548/478
• US Class Current: 524/89
• CPC Class Codes: C08K 5/3417 condensed with carbocyclic rings

Abstract

A flame retardant thermoplastic polymer containing a flame retardant amount of a flame retardant additive mixture. The mixture is comprised of halogenated imide-containing polyols having the formula: ##STR1## and the corresponding ethers having the formula: ##STR2## wherein R is a hydrocarbon group having the valence n+2 and is selected from the group consisting of benzene groups, naphthalene groups and alicyclic hydrocarbon groups containing 5 to 10 carbon atoms, X is selected from the group consisting of bromine and chlorine, n is an integer from 1-6 and p is an integer from 2-6. The preferred flame retardant mixture is a derivative of tetrabromophthalic anhydride.

Claims

1. A thermoplastic polymer containing a flame retardant amount of a flame retardant additive mixture, said flame retardant additive mixture comprising halogenated imide-containing polyol having the formula:

##STR21## and the corresponding ethers having the formula;

##STR22## wherein R is a hydrocarbon group having the valence n+2 and is selected from the group consisting of benzene groups, naphthalene groups and alicyclic hydrocarbon groups containing 5 to 10 carbon atoms, R'"'"' is an aliphatic hydrocarbon group containing 3-12 carbon atoms, X is selected from the group consisting of bromine and chlorine, n is an integer from 1-6 and p is an integer from 2-6.

2. A flame retardant polymer, as recited in claim 1, wherein R'"'"' is an aliphatic hydrocarbon group containing 5 carbon atoms and p is 2.

3. A flame retardant polymer, as recited in claim 2, wherein R is benzene, X is bromine and n is 4.

4. A flame retardant polymer, as recited in claim 3, wherein said halogenated imide-containing polyol has the formula:

##STR23## and said corresponding ether has the formula;

##STR24##

5. A flame retardant polymer, as recited in claim 2, wherein R is 5-norbornene, X is chlorine and n is 6.

6. A flame retardant polymer, as recited in claim 5, wherein said halogenated imide-containing polyol has the formula:

##STR25## and said corresponding ether has the formula;

##STR26##

7. A flame retardant thermoplastic polymer containing a flame retardant amount of a flame retardant additive having the formula:

##STR27## wherein R is a benzene group, R'"'"' is an aliphatic hydrocarbon group containing 3-12 carbon atoms, X is selected from the group consisting of bromine and chlorine, n is an integer from 1-6 and p is an integer from 2-6.

8. A flame retardant polymer, as recited in claim 7, wherein R'"'"' is an aliphatic hydrocarbon group containing 5 carbon atoms and p is 2.

9. A flame retardant polymer, as recited in claim 8, wherein X is bromine and n is 4.

10. A flame retardant polymer, as recited in claim 9, having the formula:

##STR28##

11. A flame retardant thermoplastic polymer containing a flame retardant amount of flame retardant additive having the formula:

##STR29## wherein R is a hydrocarbon group having the valence n+2 and is selected from the group consisting of benzene groups, naphthalene groups and alicyclic hydrocarbon groups containing 5 to 10 carbon atoms, R'"'"' is an aliphatic hydrocarbon group containing 3-12 carbon atoms, X is selected from the group consisting of bromine and chlorine, n is an integer from 1-6 and p is an integer from 2-6.

12. A flame retardant polymer, as recited in claim 11, wherein R'"'"' is an aliphatic hydrocarbon group containing 5 carbon atoms and p is 2.

13. A flame retardant polymer, as recited in claim 12, wherein R is benzene, X is bromine and n is 4.

14. A flame retardant polymer, as recited in claim 13, having the formula:

##STR30##

15. A flame retardant polymer, as recited in claim 12, wherein R is 5-norbornene, X is chlorine and n is 6.

16. A flame retardant polymer, as recited in claim 15, having the formula:

##STR31##