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US 2008/0166559 A1Published application
Fire Retardance
AssigneeDartex Coatings, Inc.
InventorsTilo Schwarzbach, Jo McKnight
Life of this patent
Estimating the term…
Abstract
A fire retardant material comprising both ammonium polyphosphate particles microencapsulated within a melamine or melamine-based resin and melamine-based particles retained in a base material. The material may be applied to a textile article or incorporated into an article during formation thereof.
Claims20
1-21. (canceled)
22:
- A fire retardant material for application to textiles comprising ammonium polyphosphate particles microencapsulated within a melamine resin or melamine-based resin and melamine-based particles retained in a base material, wherein the weight to weight ratio of ammonium polyphosphate particles microencapsulated within a melamine or melamine-based resin and melamine-based particles is from 3:1 to 1:3.
23:
- A material according to claim 22, wherein the ammonium polyphosphate particles are surface reacted melamine ammonium polyphosphate particles.
24:
- A material according to claim 22, wherein the ammonium polyphosphate particles are surface reacted melamine formaldehyde ammonium polyphosphate particles.
25:
- A material according to claim 22, wherein the melamine-based particles are one or more of melamine cyanurate, melamine polyphosphate, melamine pyrophosphate, melamine phosphite.
26:
- A material according to claim 22, wherein the base material comprises one of a wax, a resin or a binder.
27:
- A material according to claim 26, wherein the base material comprises a polymeric resin, for example polyurethane.
28:
- A material according to claim 22, wherein the weight to weight ratio of ammonium polyphosphate particles microencapsulated within a melamine or melamine-based resin and melamine-based particles is 1:1.
29:
- A material according to claim 22, wherein the sum of the weights of ammonium polyphosphate particles microencapsulated within a melamine or melamine-based resin and melamine-based particles is less than 60 w/w % of the base resin.
30:
- A material according to claim 29, wherein the sum of the weights of ammonium polyphosphate particles microencapsulated within a melamine or melamine-based resin and melamine-based particles is in the range of from 5 to 50 w/w % of the base resin.
31:
- A material according to claim 22, wherein the base material comprises a polymeric resin and the melamine-based particles consist of melamine cyanurate.
32:
- A fire retardant textile article coated with a fire-retardant material according to claim 31.
33:
- A textile article according to claim 32, wherein the ammonium polyphosphate particles are surface reacted melamine ammonium polyphosphate particles.
34:
- A textile article according to claim 33, wherein the ammonium polyphosphate particles are surface reacted melamine formaldehyde ammonium polyphosphate particles.
35:
- A textile article according to claim 32, comprising a plurality of layers of fire retardant material according to claim 22.
36:
- A textile article according to claim 32, wherein the or each layer has a basis weight of from about 5 to about 55 gm−2.
37:
- A textile article according to claim 32, wherein the sum of the weights of ammonium polyphosphate particles microencapsulated within a melamine or melamine-based resin and melamine-based particles is in the range of from 5 to 25 w/w % of the base resin
38:
- A method of coating a textile article to provide a fire-retardant textile article, the method comprising dispersing fire retardant material in a base material, the fire retardant material comprising ammonium polyphosphate particles microencapsulated within a melamine or melamine-based resin and melamine cyanurate particles, and coating the so-formed dispersion onto a textile article wherein the weight to weight ratio of ammonium polyphosphate particles microencapsulated within a melamine or melamine-based resin and melamine cyanurate particles is from 3:1 to 1:3.
39:
- A method according to claim 38, comprising dispersing the fire-retardant material in a liquid resin solution.
40:
- A method according to claim 39, wherein the liquid resin solution is a polyurethane solution.