US 9,752,010 B2 · Phosphorus-containing compounds useful for making halogen-free, ignition-resistant polymers

Abstract

A process for making a phosphorus-containing compound is disclosed. The process comprises contacting a compound of formula (A) wherein RA and RB are selected from optionally substituted aryl, aryloxy, alkyl and alkoxy groups or can be combined to form cyclic structures; and RC is methyl, ethyl, isopropyl, n-butyl, i-butyl, t-butyl, phenyl or benzyl; and a compound of formula (B) wherein R1-R4 are selected from optionally substituted aryl, aryloxy, alkyl and alkoxy groups. The phosphorus-containing compound can then be used as a flame retardants for polymers, especially for epoxy, polyurethane, thermosetting resins and thermoplastic polymers. Such flame retardant-containing polymers can be used to make protective coating formulations and ignition-resistant fabricated articles, such as electrical laminates, polyurethane foams, and various molded and/or foamed thermoplastic products.

Claims14

Dependent claims

A process for making a curable phosphorus-containing epoxy resin composition comprising blending:

(I) a phosphorus-containing compound comprising the reaction product of:
wherein RA and RB, independently of one another, are selected from the group consisting of substituted aryl groups, substituted aryloxy groups, unsubstituted aryl groups, unsubstituted aryloxy groups, substituted alkyl groups, and unsubstituted alkyl groups;
or wherein RA and RB are be combined to form cyclic structures;
wherein Rc is a hydrocarbyl radical containing in the range of from 1 to 12 carbon atoms per molecule and is selected from the group consisting of methyl, ethyl, isopropyl, n-butyl, i-butyl, t-butyl, phenyl, and benzyl;
and
wherein R1-R4, independently from one another, are selected from the group consisting of hydrogen, a substituted alkyl group, a substituted alkoxy group, an unsubstituted alkyl group, an unsubstituted alkoxy group, a substituted aryl group, a substituted aryloxy group, an unsubstituted aryl group and an unsubstituted aryloxy group;
(II) at least one epoxy resin;
and
(III) at least one catalyst.

6 more elements

Dependencies are inferred from the claim text.

Phosphorus-containing compounds useful for making halogen-free, ignition-resistant polymers

Life of this patent

Phosphorus-containing compounds useful for making halogen-free, ignition-resistant polymers

Life of this patent

Abstract

Claims14