Sprayable micropulp composition

• US 20070196621A1
• Filed: 01/30/2007
• Published: 08/23/2007
• Est. Priority Date: 02/02/2006
• Status: Abandoned Application

• Current Assignee: Arnold Frances, David Zukowski, Eoin Pierce
• Original Assignee: Arnold Frances, David Zukowski, Eoin Pierce
• Inventors: Frances, Arnold, Zukowski, David, Pierce, Eoin
• Application Number:
  US11/699,938
• Publication Number:
  US 20070196621A1
• Time in Patent Office: Days
• US Class Current: 428/125
• CPC Class Codes: C08G 18/4238 derived from dicarboxylic acids and dialcohols
• CPC Class Codes: C08G 18/721 Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
• CPC Class Codes: C08G 18/792 formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
• CPC Class Codes: C08G 18/798 containing urethdione groups
• CPC Class Codes: C08J 5/046 with synthetic macromolecular fibrous material
• CPC Class Codes: C08K 7/02 Fibres or whiskers
• CPC Class Codes: C08L 2205/16 Fibres; Fibrils
• CPC Class Codes: C08L 2666/20 Macromolecular compounds having nitrogen in the main chain according to C08L75/00 - C08L79/00; Derivatives thereof
• CPC Class Codes: C08L 75/00 Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 77/00 Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 77/10 Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
• CPC Class Codes: C09D 175/04 Polyurethanes
• CPC Class Codes: C09D 175/06 from polyesters
• CPC Class Codes: C09D 5/18 Fireproof paints including high temperature resistant paints
• CPC Class Codes: C09D 7/65 macromolecular C09D7/41-C09D7/48 take precedence
• CPC Class Codes: C09D 7/67 Particle size smaller than 100 nm
• CPC Class Codes: C09D 7/68 Particle size between 100-1000 nm
• CPC Class Codes: C09D 7/69 Particle size larger than 1000 nm
• CPC Class Codes: C09D 7/70 characterised by shape, e.g. fibres, flakes or microspheres
• CPC Class Codes: Y10T 428/24223 Embedded in body of web

Abstract

A composition for coating a surface where the composition has at least one polymer selected from the group of polyurea and polyurethane and a para-aramid micropulp dispersed in the polymer where the micropulp has a volume average length of from 0.01 to 200 micrometers.

Claims

1. A composition for coating a surface, comprising:

at least one polymer selected from the group consisting of polyurea and polyurethane,

a para-aramid micropulp dispersed in the polymer, the micropulp having a volume average length of from 0.01 to 200 micrometers.

2. The composition of claim 1, the micropulp having a volume average length of from 0.1 to 200 micrometers.

3. The composition of claim 1, wherein the micropulp has a volume average length of from 1 to 150 micrometers.

4. The composition of claim 1, wherein the micropulp has a volume average length of from 5 to 150 micrometers.

5. The composition of claim 1, wherein the micropulp has a volume average length of from 5 to 50 micrometers.

6. The composition of claim 1, wherein the weight percent of the micropulp is 0.01 to 3.0 weight percent of the polymer plus the micropulp.

7. The composition of claim 6, wherein the weight percent of the micropulp is 0.05 to 1 weight percent.

8. The composition of claim 6, wherein the weight percent of the micropulp is 0.1 to 0.5 weight percent.

9. The composition of claim 1, wherein the para-aramid is selected from the group consisting of poly(p-phenylene terephthalamide), poly(m-phenylene isophthalamide and a mixture thereof.

10. The composition of claim 9, wherein the para-aramid is poly(p-phenylene terephthalamide).

11. The composition of claim 1, capable of being sprayed through a sprayer having orifices no larger than 0.080 inch (2.03 mm) without plugging the orifice to form a micropulp-reinforced polymeric protective structure on the surface.

12. A surface coated with the protective layer of claim 6, wherein the surface is made of a material selected from the group consisting of metal, fiberglass, and plastic.

13. The surface of claim 12, wherein the surface is a protective liner for a vehicle bed.

14. A process for coating a surface with a protective polymeric structure, comprising:

contacting organic fiber, a solid component, and at least a first reaction component selected from the group consisting of polyol, polyamine, diamine, and mixtures thereof;

agitating the organic fiber, the solid component, and the first reaction component to transform the organic fiber into a micropulp having a volume average length of from 0.01 to 200 micrometers that is dispersed in the first reaction component;

removing the solid component to form a first reaction mixture;

contacting the first reaction mixture with a second reaction component selected from the group consisting of polyisocyanate, di-isocyanate, and reaction products of diisocyanates having isocyanate functionality,

mixing the first reaction mixture with the second reaction component to form a liquid polymer selected from the group consisting of polyurethane, polyurea, and mixtures thereof wherein the micropulp is dispersed in the liquid polymer;

spraying the liquid polymer through a nozzle onto the surface without plugging the nozzle, and

drying the liquid polymer to form a flexible solid protective polymeric structure on the surface.

15. The process of claim 14, wherein the curing step is drying.

16. The process of claim 14, wherein the organic fiber is a para-aramid selected from the group consisting of poly(p-phenylene terephthalamide) and poly(m-phenylene isophthalamide).

17. The process of claim 16, wherein the para-aramid is poly(p-phenylene terephthalamide).