Oligomeric, hydroxy-terminated phosphonates

• US 20050020800A1
• Filed: 10/04/2002
• Published: 01/27/2005
• Est. Priority Date: 10/04/2001
• Status: Active Grant

• Current Assignee: ICL-IP America Inc. (ICL Group Ltd.)
• Original Assignee: ICL-IP America Inc. (ICL Group Ltd.)
• Inventors: Levchik, Sergei V, Dashevsky, sophia, Yao, Qiang, Weil, Edward
• Granted Patent: US 7,449,526 B2
• Time in Patent Office: Days
• US Class Current: 528/108
• CPC Class Codes: C07F 9/4084 Esters with hydroxyaryl compounds
• CPC Class Codes: C08G 59/4071 phosphorus containing compounds
• CPC Class Codes: C08G 79/04 Phosphorus linked to oxygen or to oxygen and carbon
• CPC Class Codes: C08L 2666/22 Macromolecular compounds not provided for in C08L2666/16 - C08L2666/20
• CPC Class Codes: C08L 63/00 Compositions of epoxy resins; Compositions of derivatives of epoxy resins
• CPC Class Codes: C08L 85/00 Compositions of macromolecular compounds obtained by reactions forming a linkage in the main chain of the macromolecule containing atoms other than silicon, sulfur, nitrogen, oxygen and carbon; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 85/02 containing phosphorus
• CPC Class Codes: Y10T 428/24994 Fiber embedded in or on the surface of a polymeric matrix
• CPC Class Codes: Y10T 428/31511 Of epoxy ether
• CPC Class Codes: Y10T 428/31515 As intermediate layer
• CPC Class Codes: Y10T 428/31522 Next to metal

Abstract

Epoxy resins that are suitable for forming epoxy laminates that meet a UL-94 rating of V—O comprise a hydroxy-terminated oligomeric phosphonate comprising the repeating structure —OP(═O)(R)OArylene-, where R is alkyl, as a flame retardant.

Claims

1. A thermoset resin composition comprising a hydroxy-terminated oligomeric phosphonate comprising the repeating structure —

OP(═

O) (R)OArylene-, where r is alkyl, optionally in the presence of another flame retardant.

2. A composition as claimed in claim 1 wherein the content of hydroxy-terminated phosphonate ranges from about 20% to about 100%, based upon the total number of termination ends that potentially could hold such end groups, preferably from about 50% to about 100%.

3. A composition as claimed in claim 1 wherein Arylene is 1,3-phanylene.

4. A composition as claimed in claim 1 wherein R is lower alkyl.

5. A composition as claimed in claim 1 wherein Axylene to 1,3-phenylene and R in lower alkyl.

6. A composition as claimed in claim 1 wherein Arylene is 1,3-phenylene and R is methyl.

7. A composition as claimed in claim 1 wherein Arylene is a bisphenol diradical unit.

8. A composition as claimed in claim 1 wherein Arylene is a bisphenol diradical unit and R is methyl.

9. A composition as claimed in any of claims 1-8 wherein the thermoset resin is an epoxy resin, optionally wherein the phosphonate and the epoxy have been prereacted with one another.

11. An epoxy laminate meeting a flame retardane UL-94 rating of V—

O and resistant to delamination which comprises a flame retarding amount of an oligomeric hydroxy-terminated phosponate as claimed in any of claims 1-8, optionally in the presence of anohter flame retardant.

10. (Cancelled)