Epoxy resin reacted with carboxy-functional phosphinic or phosphonic acid and hardener

• US 5,773,533 A
• Filed: 03/27/1997
• Issued: 06/30/1998
• Est. Priority Date: 04/01/1996
• Status: Expired due to Term

• Current Assignee: Clariant Produkte AG (Clariant AG)
• Original Assignee: Hoechst Aktiengesellschaft (Sanofi )
• Inventors: Horold, Sebastian
• Primary Examiner(s): Sellers, Robert E.
• Application Number:
  US08/827,434
• Time in Patent Office: 460 Days
• Field of Search: 528/108, 525/508, 525/423, 525/481, 525/485, 525/524, 525/526, 525/533, 523/427, 523/428, 523/457, 523/466
• US Class Current: 525/533
• CPC Class Codes: C07F 9/301 Acyclic saturated acids which can have further substituents on alkyl
• CPC Class Codes: C07F 9/4006 Esters of acyclic acids which can have further substituents on alkyl
• CPC Class Codes: C08G 59/1488 containing phosphorus
• CPC Class Codes: C08G 59/304 containing phosphorus
• CPC Class Codes: H05K 1/0326 containing O

Abstract

The invention relates to flame-resistant epoxy resin mixtures comprising epoxy resins, phosphorus-containing compounds and a hardener, which comprise a phosphorus-containing compound of the formula I or II ##STR1## in which R is a linear or branched alkyl, cycloalkyl, aryl or alkylaryl group having 1 to 18 carbon atoms or is hydrogen, and R'"'"' is a linear or branched alkylene, cycloalkylene, arylene or alkylarylene group having 1 to 18 carbon atoms, to a process for their preparation and to their use.

Claims

1. A flame-resistant epoxy resin mixture comprising an epoxy resin reacted with a phosphorus-containing compound and a hardener, the phosphorus-containing compound having the formula I or II ##STR6## in which R is a linear or branched alkyl, cycloalkyl, aryl or alkylaryl group having 1 to 18 carbon atoms, or is hydrogen, and R'"'"' is a linear or branched alkylene, cycloalkylene, arylene or alkylarylene group having 1 to 18 carbon atoms.

2. A flame-resistant epoxy resin mixture as claimed in claim 1, which contains from 10 to 100 parts by weight of the phosphorus-containing compound of the formula I or II per 100 parts by weight of epoxy resin, and wherein the overall weight ratio of epoxy resin and phosphorus-containing compound of formula I or II to hardener is from 1:

1 to 10;

1.

3. A flame-resistant epoxy resin mixture as claimed in claim 1, which is free from halogen.

4. A flame-resistant epoxy resin mixture as claimed in claim 1, which contains from 5 to 300 parts by weight per 100 parts by weight of epoxy resin of a phosphorus-free epoxy resin.

5. A flame-resistant epoxy resin mixture as claimed in claim 1, which contains from 5 to 300 parts by weight per 100 parts by weight of epoxy resin of glass cloth, glass fibers or a filler other than glass cloth or glass fibers.

6. A flame-resistant epoxy resin mixture as claimed in claim 1, which contains from 0.5 to 13% by weight of phosphorus based on the combined weight of epoxy resin and phosphorus-containing compound.

7. A flame-resistant epoxy resin mixture as claimed in claim 1, which contains from 1 to 6% by weight of phosphorus based on the combined weight of epoxy resin and phosphorus-containing compound.

8. A flame-resistant epoxy resin mixture as claimed in claim 1, which contains an accelerator.

9. A coating composition comprising the epoxy resin mixture as claimed in claim 1.