Curable fiberglass binder

Patent metadata

Field	Value
Publication number	US-9994482-B2
Application number	US-201013386865-A
Country	US
Kind code	B2
Filing date	Aug 6, 2010
Priority date	Aug 11, 2009
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A curable formaldehyde-free binding composition for use with fiberglass is provided. Such curable composition comprises an addition product of an amine and a reactant to form an amino-amide intermediate. To the amino-amide is added an aldehyde or ketone to form the curable binder composition. The composition when applied to fiberglass is cured to form a water-insoluble binder which exhibits good adhesion to glass. In a preferred embodiment the composition when applied to fiberglass provides a sufficient blackness required in facer products.

First claim

That which is claimed is:

1. A curable composition for use in the binding of fiberglass comprising:
an aldehyde or ketone;
an amino-amide which is a conjugate addition product of an amine and a reactant; and
a thickener, wherein:
the amine comprises 1,6-hexanediamine,
the reactant comprises maleic anhydride,
the aldehyde or ketone comprises a reducing sugar,
the amino-amide is oligomerized by heating at a temperature from 120° C. to 150° C. prior to adding the aldehyde or ketone to the amino-amide, and
the curable composition is formaldehyde-free.

2. The curable composition of claim 1 , wherein the thickener is based on polysaccharides.

3. The curable composition of claim 1 , wherein the thickener has a weight average molecular weight of at least about 100,000 and below about 2,000,000.

4. The curable composition of claim 1 , wherein the thickener is based on hydroxyalkyl cellulose or carboxyalkyl cellulose.

5. The curable composition of claim 1 , wherein the thickener is present in the curable composition from 0.05 to 0.7 weight percent (based on dry mass).

6. The curable composition of claim 1 , wherein the composition comprises carbon black.

7. The curable composition of claim 1 , wherein the carbon black is present in the curable compositions from 10 to 50 weight percent (based on dry mass).

8. The curable composition of claim 6 , wherein the carbon black has particle size of 70 nm or less.

9. The curable composition of claim 1 , wherein an aldehyde is used with the amino-amide.

10. The curable composition of claim 1 , wherein the amino-amide is an oligomer.

11. The curable composition of claim 1 , wherein:
the amino-amide comprises an amide group and a carboxylic acid group, and
the amide group and the carboxylic acid group are formed by an amine group of the 1,6-hexanediamine covalently bonding with a carbonyl group of the maleic anhydride.

12. The curable composition of claim 1 , wherein the amino-amide is a monomer, dimer, trimer, or tetramer.

13. The curable composition of claim 1 , wherein the amino-amide comprises an amic acid function.

Assignees

• Eckert Bernhard
• Christensen Bernd
• Shooshtari Kiarash Alavi
• Nandi Souvik
• Asrar Jawed
• Zhang Mingfu
• Johns Manville

Inventors

• Eckert Bernhard
• Christensen Bernd
• Shooshtari Kiarash Alavi
• Nandi Souvik
• Asrar Jawed
• Zhang Mingfu

Classifications

• D04H1/587

  characterised by the bonding agents used · CPC title

• D04H1/4218

  Glass fibres · CPC title

• C08L3/04

  Starch derivatives {, e.g. crosslinked derivatives} · CPC title

• Y10T442/2992

  Coated or impregnated glass fiber fabric · CPC title

• C08L1/284

  with hydroxylated hydrocarbon radicals · CPC title