Antimony free flame-retarded epoxy compositions

Patent metadata

Field	Value
Publication number	US-11560448-B2
Application number	US-201716469429-A
Country	US
Kind code	B2
Filing date	Dec 14, 2017
Priority date	Dec 14, 2016
Publication date	Jan 24, 2023
Grant date	Jan 24, 2023

Abstract

A curable epoxy composition suitable for surface application, comprising one or more epoxy resin (s); 2, 4, 6-tribromophenyl end-capped tetrabromobisphenol A epoxy-based flame retardant; and phosphorus-containing compound selected from the group consisting of one or more of: ammonium polyphosphate; resorcinol bis (diphenyl phosphate); and liquid alkylated triphenyl phosphate ester. The composition is substantially Sb2O3-free.

First claim

The invention claimed is:

1. A curable epoxy composition suitable for surface applications, comprising:
A) 100 parts by weight of one or more epoxy resin(s);
B) from 15 to 60 parts by weight of 2,4,6-tribromophenyl end-capped tetrabromobisphenol A epoxy-based flame retardant of Formula (I):

wherein n indicates the degree of polymerization; and
C) from 15 to 40 parts by weight of a mixture of aluminum ammonium polyphosphate and resorcinol bis (diphenyl phosphate), and wherein the composition is substantially Sb 2 O 3 -free.

2. A curable epoxy composition according to claim 1 , comprising:
A) 100 parts by weight of one or more epoxy resin(s);
B) from 40 to 60 parts by weight of the 2,4,6-tribromophenyl end-capped tetrabromobisphenol A epoxy-based flame retardant of Formula I; and
C) from 15 to 30 parts by weight of a mixture consisting of aluminum ammonium polyphosphate and resorcinol bis (diphenyl phosphate).

3. A kit comprising first and second components, the first component being the curable composition of claim 1 , and the second component comprising a curing agent for said curable composition, such that said first component is stored separately from said second component until use.

4. A process for applying a coating or a paint onto a surface, comprising curing the curable composition of claim 1 with the aid of a curing agent to form a fully cured flame retarded coating or paint onto said surface.

5. A kit comprising first and second components, the first component being the curable composition of claim 2 , and the second component comprising a curing agent for said curable composition, such that said first component is stored separately from said second component until use.

6. A process for applying a coating or a paint onto a surface, comprising curing the curable composition of claim 2 with the aid of a curing agent to form a fully cured flame retarded coating or paint onto said surface.

Assignees

• Bromine Compounds Ltd

Inventors

• Abecassis-Wolfovich Meyrav
• Swissa Smadar

Classifications

• C08L63/00

  Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title

• C08K5/136

  Phenols containing halogens · CPC title

• C08G59/30

  containing atoms other than carbon, hydrogen, oxygen and nitrogen · CPC title

• C08K2003/323

  Ammonium polyphosphate · CPC title

• C08G59/245 Primary

  aromatic · CPC title