Granted Patent B2

US 8,029,704 · App. 11/212,319 · Granted Oct 4, 2011

Abstract

Claims (19)

1. A fire-retardant composition comprising:

(a) a latex binder;

(b) at least 40% by weight of alumina trihydrate having at least a bimodal distribution of particle sizes comprising:

(i) a first powder of alumina trihydrate having a first median particle diameter between about 0.1 and about 20 microns, and

(ii) a second powder of alumina trihydrate having a second median particle diameter between about 5 and about 100 microns; wherein said second median particle diameter is larger than said first median particle diameter; and

(c) a surfactant.

2. The composition of claim 1 wherein said first powder has a median particle diameter between about 1 and about 3 microns.

3. The composition of claim 2 wherein said first powder has a median particle diameter of about 2 microns.

4. The composition of claim 1 wherein said second powder has a median particle diameter between about 10 and about 70 microns.

5. The composition of claim 4 wherein said second powder has a median particle diameter between about 20 and about 60 microns.

6. The composition of claim 5 wherein said second powder has a median particle diameter of about 40 and about 50 microns.

7. A coating consisting essentially of the composition of claim 1 .

8. A fire-retardant, smoke-suppressing coating consisting essentially of the composition of claim 1 .

9. A fire-extinguishing coating consisting essentially of the composition of claim 1 .

10. A water-resistant coating consisting essentially of the composition of claim 1 .

11. An adhesive consisting essentially of the composition of claim 1 .

12. A flexible barrier consisting essentially of the composition of claim 1 .

13. The composition of claim 1 , wherein the latex binder is selected from the group consisting of a natural latex polymer; a neoprene latex polymer; a nitrile latex polymer; a vinyl acrylic latex polymer; a styrene acrylic latex polymer; a styrene butadiene latex polymer; a copolymer of methylmethacrylate, styrene, methacrylic acid, and 2-hydroxyethyl acrylate; a copolymer of acrylic acid, methyl methacrylate, styrene, hydroxyethyl acrylate, and butylacrylate; a copolymer of butylacrylate, methyl methacrylate, and hydroxyethyl acrylate; a copolymer of styrene and butylacrylate; a copolymer of butylacrylate, 2-ethylhexyl acrylate, and methacrylic acid; carboxylated styrene butadiene polymers; a copolymer of butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, and acrylic acid; a copolymer of butyl acrylate, methyl methacrylate, styrene, methacrylic acid, and 2-hydroxyethyl acrylate; and a copolymer of vinyl acetate and butyl acrylate.

14. The composition of claim 1 , wherein the composition comprises water.

Assignments (8)