Soy protein and carbohydrate containing binder compositions

Patent metadata

Field	Value
Publication number	US-10934646-B2
Application number	US-201816155960-A
Country	US
Kind code	B2
Filing date	Oct 10, 2018
Priority date	Nov 13, 2012
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

Soy protein and carbohydrate containing binder compositions are described. The binder compositions may include a carbohydrate, a nitrogen-containing compound, and a soy protein. The binder compositions may also optionally include thickening agents such as modified celluloses and polysaccharides.

First claim

What is claimed is:

1. A process of making a formaldehyde-free, non-woven glass-fiber product, the process comprising:
providing a plurality of glass fibers;
applying a soy-containing binder composition to the glass fibers to form a binder-containing wet mat; and
curing the binder-containing wet mat to form the formaldehyde-free, non-woven glass-fiber product,
wherein the soy-containing binder composition comprises:
(i) a soy protein,
(ii) dextrose; and
(iii) a reaction product of a urea compound and a dialdehyde compound.

2. The process of claim 1 , wherein a molar ratio of the reaction product of (i) the urea compound and the dialdehyde compound to (ii) the dextrose is 1:2 to 1:50.

3. The process of claim 1 , wherein the soy protein is selected from the group consisting of soy flour, defatted soy flour, soy protein concentrate, soy protein isolate, and soy polymer.

4. The process of claim 3 , wherein the soy protein is soy flour.

5. The process of claim 1 , wherein the soy-containing binder composition further comprises a curing catalyst.

6. The process of claim 1 , wherein the soy-containing binder composition further comprises a thickening agent.

7. The process of claim 1 , wherein the soy-containing binder composition has a pH range of 6 to 8.

8. The process of claim 1 , wherein the soy-containing binder composition has a solids concentration of 10 wt. % to 30 wt. %.

9. The process of claim 1 , wherein the urea compound has a formula:

wherein R 1 , R 2 , R 3 , and R 4 are independently chosen from a hydrogen moiety (H), an alkyl group, an aromatic group, an alcohol group, a ketone group, a carboxylic acid group, an alkoxy group.

10. The process of claim 1 , wherein the dialdehyde compound has a formula:

wherein R 5 and R 6 are independently chosen from hydrogen (H), an alkyl group, an aromatic group, an alcohol group, an aldehyde group, a ketone group, a carboxylic acid group, and an alkoxy group.

11. The process of claim 1 , wherein the urea compound comprises urea and the dialdehyde compound comprises glyoxal.

12. The process of claim 1 , wherein the reaction product of a urea compound and a dialdehyde compound is 4,5-dihydroxyimidazolidin-2-one.

Assignees

• Johns Manville

Inventors

• Lester Uranchimeg
• Alavi Kiarash
• Asrar Jawed
• Guo Zhihua
• Zhang Mingfu

Classifications

• C09J189/00 Primary

  Adhesives based on proteins; Adhesives based on derivatives thereof · CPC title

• D04H1/4242

  Carbon fibres · CPC title

• C08L21/02

  Latex · CPC title

• Y10T442/60

  Nonwoven fabric [i.e., nonwoven strand or fiber material] · CPC title

• C08L5/00

  Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00 · CPC title