Flame-retardant urethane resin composition

Patent metadata

Field	Value
Publication number	US-10676559-B2
Application number	US-201514803994-A
Country	US
Kind code	B2
Filing date	Jul 20, 2015
Priority date	Jan 20, 2013
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

A flame-retardant urethane resin composition comprises a polyisocyanate compound, a polyol compound, a trimerization catalyst, a foaming agent, a foam stabilizer, and an additive, in which the trimerization catalyst is at least one selected from the group consisting of a nitrogen-containing aromatic compound, a carboxylic acid alkali metal salt, a tertiary ammonium salt, and a quaternary ammonium salt, and the additive comprises red phosphorus and at least one selected from the group consisting of a phosphoric acid ester, a phosphate-containing flame retardant, a bromine-containing flame retardant, a boron-containing flame retardant, an antimony-containing flame retardant, and a metal hydroxide.

First claim

What is claimed is:

1. A flame retarding composition, comprising
a urethane resin prepared from a composition comprising:
a polyisocyanate compound;
a polyol compound;
a trimerization catalyst;
a foaming agent;
a foam stabilizer; and
an additive, wherein
the trimerization catalyst is at least one selected from the group consisting of a nitrogen-containing aromatic compound, a carboxylic acid alkali metal salt, a tertiary ammonium salt, and a quaternary ammonium salt,
the additive comprises red phosphorus and a bromine-containing flame retardant,
the bromine-containing flame retardant is at least one selected from the group consisting of hexabromobiphenyl and decabromobiphenyl,
an amount of the red phosphorus is within a range of 3 parts by weight to 18 parts by weight based on 100 parts by weight of the urethane resin,
an amount of the trimerization catalyst is within a range of 0.6 parts by weight to 10 parts by weight based on 100 parts by weight of the urethane resin, and
an isocyanate index of the urethane resin is 400 to 1,000.

2. The flame retarding composition according to claim 1 , wherein
an amount of the additive is within a range of 4.5 parts by weight to 70 parts by weight based on 100 parts by weight of the urethane resin.

3. The flame retarding composition according to claim 1 , wherein
an amount of the foaming agent is within a range of 0.1 parts by weight to 30 parts by weight based on 100 parts by weight of the urethane resin.

4. A method for producing a flame retarding composition comprising:
preparing an additive by mixing red phosphorus and a bromine-containing flame retardant;
preparing a mixture by mixing a polyol compound, a trimerization catalyst, a foaming agent, a foam stabilizer, and the additive; and
adding a polyisocyanate compound into the mixture to form a urethane resin, wherein
the trimerization catalyst is at least one selected from the group consisting of a nitrogen-containing aromatic compound, a carboxylic acid alkali metal salt, a tertiary ammonium salt, and a quaternary ammonium salt,
the bromine-containing flame retardant is at least one selected from the group consisting of hexabromobiphenyl and decabromobiphenyl,
an amount of the red phosphorus is within a range of 3 parts by weight to 18 parts by weight based on 100 parts by weight of the urethane resin,
an amount of the trimerization catalyst is within a range of 0.6 parts by weight to 10 parts by weight based on 100 parts by weight of the urethane resin, and an isocyanate index of the urethane resin is 400 to 1,000.

5. The method for producing a flame retarding composition according to claim 4 , wherein
an amount of the additive is within a range of 4.5 parts by weight to 70 parts by weight based on 100 parts by weight of the urethane resin.

6. The method for producing a flame retarding composition according to claim 4 , wherein
an amount of the foaming agent is within a range of 0.1 parts by weight to 30 parts by weight based on 100 parts by weight of the urethane resin.

7. The flame retarding composition according to claim 1 , wherein the additive further comprises a phosphoric acid ester.

8. The method for producing a flame retarding composition according to claim 4 , wherein preparing the additive further comprises mixing a phosphoric acid ester with the red phosphorus and the bromine-containing flame retardant.

Assignees

• Sekisui Chemical Co Ltd

Inventors

• Makida Taichi
• Yoshitake Toshitaka
• Okada Yousuke
• Ushimi Takehiko

Classifications

• C08K3/32

  Phosphorus-containing compounds · CPC title

• C08G2101/00

  Manufacture of cellular products · CPC title

• C08G18/48

  Polyethers · CPC title

• C08G18/18

  containing secondary or tertiary amines or salts thereof · CPC title

• C08K3/2279

  of antimony · CPC title