Universal adhesion promoter based on organofunctional modified polybutadienes

Patent metadata

Field	Value
Publication number	US-12054644-B2
Application number	US-202217804049-A
Country	US
Kind code	B2
Filing date	May 25, 2022
Priority date	May 27, 2021
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

A universal adhesion promoter contains a compound based on polybutadiene having at least one repeat unit selected from the following divalent radicals:

First claim

The invention claimed is:

1. A universal adhesion promoter, comprising:
a compound based on a polybutadiene having at least one repeat unit selected from the group consisting of divalent radicals
wherein

A is in each case independently a monovalent organic radical or a hydrogen radical;
B is in each case independently a radical of the formula (4a)

R 1 is in each case independently a monovalent hydrocarbon radical having 1 to 16 carbon atoms;
R 2 is a radical of the formula —CH 2 —O—R 3 ;
R 3 is in each case independently a monovalent hydrocarbon radicals having 3 to 18 carbon atoms;
R 4 is in each case independently a monovalent organic radical having 1 to 18 carbon atoms or hydrogen;
m, n, o, p and q are each independently 0 to 300, with the proviso that a sum total of m, n, o, p and q is greater than 1; and
wherein B has at least one repeat unit in accordance with

including every permutation of repeat units in B.

2. The adhesion promoter according to claim 1 , wherein m, n, o, p and q are each independently 0 to 100, with the proviso that the sum total of m, n, o, p and q is greater than 1.

3. The adhesion promoter according to claim 1 , wherein a number-average molar mass M n of the polybutadiene is from 200 g/mol to 20,000 g/mol.

4. The adhesion promoter according to claim 1 , wherein the polybutadiene has 0% to 80% of double bonds present as 1,2 vinyl double bonds, and 20% to 100% of the double bonds present as 1,4 double bonds.

5. The adhesion promoter according to claim 1 , wherein an average molar mass of B is from 100 g/mol to 10,000 g/mol.

6. The adhesion promoter according to claim 1 , wherein the compound is based on linear polybutadienes.

7. The adhesion promoter according to claim 1 , wherein the compound has no pendant (in comb position) polybutadienes.

8. The adhesion promoter according to claim 1 , wherein the compound has exclusively pendant (in comb position) repeat units (U), (V), and/or (W).

9. A method for preparing an adhesion promoter composition, the method comprising:
mixing the adhesion promoter according to claim 1 into a composition.

10. A composition comprising the adhesion promoter according to claim 1 , wherein the composition is one selected from the group consisting of a coating material, a dispersion, a millbase, a paint, a coating or printing ink, an inkjet, a grind resin, a pigment concentrate, a colour preparation, a pigment preparation, a filler preparation composition, a coating composition, a sealant composition, and an adhesive composition.

11. A process, comprising:
applying a curable film-forming composition comprising the adhesion promoter according to claim 1 , to a substrate.

12. The process according to claim 11 , wherein the substrate is metal, concrete, wood, glass, plastic, and/or a composite material.

13. The adhesion promoter according to claim 1 , wherein A is in each case independently an alkyl radical having 1 to 4 carbon atoms.

14. The adhesion promoter according to claim 1 , wherein B is in each case independently a radical of the formula (4b)

15. The adhesion promoter according to claim 1 , wherein B is in each case independently a radical of the formula (4c)

16. The adhesion promoter according to claim 1 , wherein R 3 is in each case independently a tert-butylphenyl radical or an o-cresyl radical.

17. The adhesion promoter according to claim 2 , wherein m, n, o, p and q are each independently 0 to 50, with the proviso that the sum total of m, n, o, p and q is greater than 10.

18. The adhesion promoter according to claim 3 , wherein the number-average molar mass M n of the polybutadiene is from 700 g/mol to 5,000 g/mol.

19. The adhesion promoter according to claim 4 , wherein the polybutadiene has 0% to 5% of the double bonds present as 1,2 vinyl double bonds, and 95% to 100% of the double bonds present as 1,4 double bonds.

20. The adhesion promoter according to claim 5 , wherein the average molar mass of B is from 400 g/mol to 5,000 g/mol.

Assignees

• Evonik Operations Gmbh

Inventors

• Blüm Jana
• Fiedel Michael
• Halbhuber Annett
• Redeker Stefanie
• Schubert Frank
• Otto Sarah

Classifications

• C09D175/06

  from polyesters · CPC title

• C08F2810/00

  Chemical modification of a polymer · CPC title

• C08F36/06

  Butadiene · CPC title

• C09J115/00

  Adhesives based on rubber derivatives (C09J111/00, C09J113/00 take precedence) · CPC title

• C08C19/40

  with epoxy radicals · CPC title