Aqueous binder compositions

Patent metadata

Field	Value
Publication number	US-12139599-B2
Application number	US-202117465938-A
Country	US
Kind code	B2
Filing date	Sep 3, 2021
Priority date	Oct 9, 2017
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

An aqueous binder composition is disclosed that comprises at least one long-chain polyol having at least two hydroxyl groups and a number average molecular weight of at least 2,000 Daltons; a primary cross-linking agent comprising at least two carboxylic acid groups; and a secondary cross-linking agent comprising a short-chain polyol having at least two hydroxyl groups and a number average molecular weight less than 2,000 Daltons.

First claim

What is claimed is:

1. An aqueous binder composition comprising:
a long-chain polyol having at least two hydroxyl groups and a number average molecular weight of at least 2,000 Daltons;
at least 70 wt. % of a polymeric cross-linking agent comprising at least two carboxylic acid groups; and
a short-chain polyol having at least two hydroxyl groups and a number average molecular weight less than 2,000 Daltons;
wherein the cross-linking agent is free of a monomeric carboxylic acid,
wherein a ratio of long-chain polyol to short-chain polyol is from 0.1/0.9 to 0.9/0.1, and wherein the wt. % is based on the total solids content of the aqueous binder composition.

2. The aqueous binder composition of claim 1 , wherein the cross-linking agent comprises a polymeric polycarboxylic acid.

3. The aqueous binder composition of claim 1 , wherein the cross-linking agent comprises a homopolymer of copolymer of acrylic acid.

4. The aqueous binder composition of claim 1 , wherein the cross-linking agent consists of polyacrylic acid.

5. The aqueous binder composition of claim 1 , wherein the long-chain polyol is selected from the group consisting of polyvinyl alcohol and polyvinyl acetate.

6. The aqueous binder composition of claim 1 , wherein the long-chain polyol is present in the binder composition in an amount up to 30 wt. %, based on the total solids content of the aqueous binder composition.

7. The aqueous binder composition of claim 1 , wherein the short-chain polyol comprises one or more of a sugar alcohol, 2,2-bis(methylol) propionic acid, tri(methylol) propane, and a short-chain alkanolamine.

8. The aqueous binder composition of claim 7 , wherein the short-chain polyol comprises a sugar alcohol selected from the group consisting of glycerol, erythritol, arabitol, xylitol, sorbitol, maltitol, mannitol, iditol, isomaltitol, lactitol, cellobitol, palatinitol, maltotritol, syrups thereof, and mixtures thereof.

9. The aqueous binder composition of claim 8 , wherein the short-chain polyol comprises sorbitol.

10. The aqueous binder composition of claim 1 , wherein the ratio of long-chain polyol to short-chain polyol is between 0.3/0.7 and 0.7/0.3.

11. The aqueous binder composition of claim 1 , wherein the short-chain polyol is present in the binder composition in an amount from 3 wt. % to 30 wt. %, based on the total solids content of the aqueous binder composition.

12. The aqueous binder composition of claim 1 , wherein:
the long-chain polyol comprises polyvinyl alcohol;
the cross-linking agent comprises polyacrylic acid; and
the short-chain polyol comprises sorbitol.

13. An aqueous binder composition comprising:
a long-chain polyol having at least two hydroxyl groups and a number average molecular weight of at least 2,000 Daltons;
at least 70 wt. % of a cross-linking agent comprising a polymeric polycarboxylic acid; and
a short-chain polyol having at least two hydroxyl groups and a number average molecular weight less than 2,000 Daltons;
wherein a ratio of long-chain polyol to short-chain polyol is from 0.1/0.9 to 0.9/0.1, and wherein the wt. % is based on the total solids content of the aqueous binder composition.

14. The aqueous binder composition of claim 13 , wherein the long-chain polyol is present in the binder composition in an amount up to 30 wt. %, based on the total solids content of the aqueous binder composition.

15. The aqueous binder composition of claim 13 , wherein the short-chain polyol is present in the binder composition in an amount from 3 wt. % to 30 wt. %, based on the total solids content of the aqueous binder composition.

16. An insulation product comprising:
a plurality of randomly oriented fibers; and
the aqueous binder composition of claim 1 at least partially coating the fibers.

17. An insulation product comprising:
a plurality of randomly oriented fibers; and
the aqueous binder composition of claim 13 at least partially coating the fibers.

Assignees

• Owens Corning Intellectual Capital Llc

Inventors

• Zhang Xiujuan
• Mueller Gert
• Smith Kendel

Classifications

• D04H1/587 Primary

  characterised by the bonding agents used · CPC title

• C08K5/092

  Polycarboxylic acids · CPC title

• D04H1/64

  the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions · CPC title

• C08K5/17

  Amines; Quaternary ammonium compounds · CPC title

• C08K5/053

  Polyhydroxylic alcohols · CPC title