Curable fiberglass binder comprising salt of inorganic acid

Patent metadata

Field	Value
Publication number	US-9604878-B2
Application number	US-201414511356-A
Country	US
Kind code	B2
Filing date	Oct 10, 2014
Priority date	Aug 11, 2009
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A curable formaldehyde-free binding composition for use with fiberglass is provided. Such curable composition comprises an aldehyde or ketone and an amine salt of an inorganic acid. 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 process for binding fiberglass comprising:
applying to the fiberglass a composition, wherein the composition comprises an aldehyde or ketone and an amine salt of an inorganic acid; and
curing the composition while present on the fiberglass, wherein:
the amine salt is an organic amine salt,
the amine of the amine salt is a diamine having at least one primary amine group,
the molar ratio of the amine salt to the aldehyde or ketone is 1:3 to 1:10,
the composition is formaldehyde-free, and
the aldehyde or ketone is present in a saccharide.

2. The process for binding fiberglass of claim 1 , wherein the composition comprises a thickener and/or rheology modifier.

3. The process for binding fiberglass of claim 2 , wherein the thickener is based on polysaccharides, neutralized polyacrylic acids, cellulose derivatives, polyacrylamides and/or polyvinylalcohols.

4. The process for binding fiberglass of claim 1 , wherein the composition comprises carbon black.

5. The process for binding fiberglass of claim 1 , wherein the amine salt is an ammonium salt of phosphoric acid.

6. The process for binding fiberglass of claim 1 , wherein the inorganic acid is phosphoric acid.

7. The process for binding fiberglass of claim 1 , wherein the amine salt is an amine-acid salt.

8. The process for binding fiberglass of claim 7 , wherein the amine is selected from the group consisting of ethylene diamine, 1,3-propanediamine, 1,4-butanediamine, 1,5-pentanediamine, 1,6-hexanediamine, and mixtures thereof.

9. The process for binding fiberglass of claim 1 , wherein the aldehyde is used with the amine salt.

10. The process for binding fiberglass of claim 9 , wherein the aldehyde is a reducing sugar.

11. The process for binding fiberglass of claim 10 , wherein the aldehyde is dextrose.

12. The process for binding fiberglass of claim 1 , wherein applying to the fiberglass the composition comprises spraying, spin-curtain coating, or dipping-roll coating.

13. The process for binding fiberglass of claim 1 , wherein applying to the fiberglass the composition comprises removing water or other solvents.

14. The process for binding fiberglass of claim 1 , wherein after curing, the composition is between about 10 and 30 percent by weight of the total weight of the cured composition and the fiberglass.

15. A formaldehyde-free fiberglass product formed by the process of claim 1 .

16. The formaldehyde-free fiberglass product of claim 15 , wherein the formaldehyde-free fiberglass product is a facer material.

17. The process for binding fiberglass of claim 1 , wherein the amine is ethylene diamine.

18. The process for binding fiberglass of claim 1 , wherein the amine is 1,6-hexanediamine.

19. The process of binding fiberglass of claim 1 , wherein the inorganic acid used in the organic amine salt of the inorganic acid is an oxygenated acid selected from the group consisting of phosphoric acid, pyrophosphoric acid, phosphorus acid, sulfuric acid, sulfurous acid, nitric acid, boric acid, hypochloric acid, and chlorate acid.

20. The process for binding fiberglass of claim 2 , wherein the thickener is present in the composition from 0.05 to 1 weight percent (based on dry mass).

Assignees

• Johns Manville

Inventors

• Christensen Bernd
• Alavi Kiarash
• Nandi Souvik
• Asrar Jawed
• Zhang Mingfu

Classifications

• C03C25/25

  Non-macromolecular compounds · CPC title

• Y10T442/2992

  Coated or impregnated glass fiber fabric · CPC title

• C03C25/42 Primary

  Coatings containing inorganic materials · CPC title

• C03C25/34

  Condensation polymers of aldehydes, e.g. with phenols, ureas, melamines, amides or amines · CPC title

• C03C25/1095

  to obtain coated fabrics · CPC title