Antimony free brominated flame retardant system for textiles

Patent metadata

Field	Value
Publication number	US-11898304-B2
Application number	US-201615580043-A
Country	US
Kind code	B2
Filing date	Jun 9, 2016
Priority date	Jun 9, 2015
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

The present invention teaches an antimony free brominated flame retardant composition, comprising a brominated flame retardant, an organic phosphorus-containing flame retardant which is an organic phosphate that is either an amorphous solid or a liquid, and a flame retardant which is a source of nitrogen and inorganic phosphorus, this source being amorphous compound. The invention further teaches textile coating formulations comprising these compositions, a process for applying them on textile fabrics, and the flame retarded fabrics coated by these compositions and formulations.

First claim

The invention claimed is:

1. A textile flame retarded by a flame retardant composition, comprising:
a. a brominated flame retardant, wherein said brominated flame retardant is selected from the group consisting of an aromatic brominated polymer, 2,2′[(1-methylethylidene) -bis-[(2,6-dibromo-4,1-phenylene)-oxymethylene]]-bisoxirane polymer with 2,2′,6,6′-tetrabromo-4,4′-isopropylidenediphenol and 2,4,6-tribromophenol (FR4002), tetrabromobisphenol A diglycidyl ether copolymer (FR4001), tetrabromobisphenol A bis-(2,3-dibromopropyl ether) (FR9001), decabromodiphenyl ethane (FR1410), and ethylene-bis-tetra-ibromo-phthalimide (BT-93),
b. an organic phosphorus-containing flame retardant, said organic phosphorus-containing flame retardant being an organic phosphate that is either an amorphous solid or a liquid at room temperature,
c. a flame retardant which is a source of nitrogen and inorganic phosphorus, said source being an amorphous inorganic phosphate salt, wherein said inorganic phosphate salt is Aluminum Ammonium superphosphate;
wherein the textile is antimony-free and has bromine content in the range from 4% to 22% of the total weight of the textile, passing ASTM D6413 flammability test.

2. The antimony-free textile of claim 1 , wherein said organic phosphate is selected from the group comprising of Resorcinol-bis(diphenylphosphate), Tris (2-chloroisopropyl) phosphate, 2-Ethylhexyl Diphenyl Phosphate, and Butylated triphenyl phosphate ester.

3. The antimony-free textile of claim 1 wherein said brominated flame retardant ranges from 35% to 90% of the total weight of said flame retardant composition.

4. The antimony-free textile of claim 1 wherein said organic phosphate ranges from 15% to 50% of the total weight of said flame retardant composition.

5. The antimony-free textile of claim 1 wherein said source of nitrogen and inorganic phosphorus ranges from 10% to 30% of the total weight of said flame retardant composition.

6. A durable antimony-free, flame retarded textile according to claim 1 .

7. The antimony-free textile of claim 6 , wherein said textile is a fabric selected from nylon, cotton, polyester, and combinations thereof.

8. A method of making the antimony-free textile of claim 1 , the method comprising applying the flame retardant formulation onto a flammable textile fabric including:
a. contacting the flammable textile fabric with the flame retardant formulation; and
b. heating said flammable textile fabric to obtain the antimony-free textile.

9. The process of claim 8 , wherein said heating is conducted at between 140° C. and 180° C.

10. The process of claim 8 , wherein said contacting is effected by exhaustion, spreading, coating, padding, dipping, printing, foaming and/or spraying.

11. The antimony-free textile of claim 1 , wherein the bromine atoms in the brominated flame retardant are exclusively aromatically-bound, the organic phosphate is Resorcinol-bis(diphenylphosphate), and the bromine content in the range from 4% to 15% of the total weight of the textile.

12. The antimony-free textile of claim 11 , wherein the textile is cotton polyester fabric, and the bromine content of the textile is from about 10 to about 15% of the total weight of the textile.

13. The antimony-free textile of claim 11 , wherein the textile is cotton nylon fabric, and the bromine content of the textile is about 10% of the total weight of the textile.

Assignees

• Bromine Compounds Ltd

Inventors

• Rapaport Ella
• Shalev Itzhak

Classifications

• D06M11/71 Primary

  Salts of phosphoric acids · CPC title

• C09K21/12 Primary

  containing phosphorus · CPC title

• C09K21/14

  Macromolecular materials · CPC title

• D06M11/72

  with metaphosphoric acids or their salts; with polyphosphoric acids or their salts; with perphosphoric acids or their salts · CPC title

• D06M13/292

  Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof · CPC title