Use of block copolymers in adhesives

Patent metadata

Field	Value
Publication number	US-10961418-B2
Application number	US-201716099817-A
Country	US
Kind code	B2
Filing date	Feb 3, 2017
Priority date	May 9, 2016
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

The present invention relates to the use of block copolymers produced from OH-functionalized polyolefins and polyesters in adhesives or sealants and to adhesives or sealants containing said block co-polymers.

First claim

The invention claimed is:

1. An adhesive composition comprising block copolymers formed from OH-, or COOH-terminated polybutadiene and polyesters in adhesives or sealants, wherein the block copolymer is B(A) x block systems
with A=polyester,
with B═OH-, or COOH-terminated polybutadiene and
with x≥1 wherein the adhesive composition contains at least one further polyol component, and
wherein the functionality of the OH-terminated polybutadienes used is from 1 to 5.

2. The adhesive composition according to claim 1 , wherein the OH— or COOH functionalized terminated polybutadienes are partially or completely hydrogenated, and
wherein the functionality of the OH-terminated polybutadienes used is from 1.5 to 3.5.

3. The adhesive composition according to claim 2 , wherein the block copolymers are based on polyesters made from a lactone.

4. The adhesive composition according to claim 2 , wherein the block copolymers are based on polyesters made from a lactide.

5. The adhesive composition according to claim 1 , wherein
the block copolymer is B(A) x block systems are B′-(-Y-A′-X) x systems
with A′=polyester radical, B′═OH—, or COOH-terminated polybutadiene,
Y═O, or COO groups,
X═OH or COOH terminal groups and x≥1, and
wherein the functionality of the OH-terminated polybutadienes used is from 2 to 3.

6. The adhesive composition according to claim 1 , wherein the block copolymers are based on polyesters made from a lactone.

7. The adhesive composition according to claim 1 , wherein the block copolymers are based on polyesters made from a lactide.

8. The adhesive composition according to claim 1 , wherein
the block copolymer is B(A) x block systems are B′-(-Y-A′-X) x systems
with A′=polyester radical,
B′═OH-, or COOH-terminated polybutadiene,
Y═O, or COO groups,
X═OH or COOH terminal groups and x>1 and
the block copolymers are based on polyesters made from a lactone and/or a lactide.

9. The adhesive composition according to claim 1 , wherein the OH- or COOH-functionalized terminated polybutadienes are OH-functionalized terminated polybutadienes having a functionality of the OH-terminated polybutadienes from 1.5 to 3.5.

10. The adhesive composition according to claim 1 , wherein the OH- or COON-functionalized terminated polybutadienes are OH-functionalized terminated polybutadienes having a functionality of the OH-terminated polybutadienes from 2 to 3.

11. An adhesive composition comprising block copolymers formed from OH-, or COOH-terminated polybutadiene and polyesters in adhesives or sealants, wherein the block copolymer is B(A) x block systems
with A=polyester,
with B═OH—, or COOH-terminated polybutadiene comprising the 1,3-butadiene-derived monomer units

wherein the proportion of (I) in the entirety of the 1,3-butadiene-derived monomer units present in the polybutadiene is 10 to 60 mole percent, and wherein the sum total of the proportions of (II) and (III) in the entirety of the 1,3-butadiene-derived monomer units present in the polybutadiene is 40 to 90 mole percent, and
with x≥1 wherein the adhesive composition contains at least one further polyol component.

12. The adhesive composition according to claim 11 , wherein the OH- or COOH-functionalized terminated polybutadienes are OH-functionalized terminated polybutadienes having a functionality of the OH-terminated polybutadienes from 1.5 to 3.5.

13. The adhesive composition according to claim 11 , wherein the OH- or COOH-functionalized terminated polybutadienes are OH-functionalized terminated polybutadienes having a functionality of the OH-terminated polybutadienes from 2 to 3.

Assignees

• Evonik Operations Gmbh

Inventors

• Kolb Nicolai
• Brenner Gabriele
• Glöckner Patrick
• Schleimer Bernhard

Classifications

• C08G18/698

  Mixtures with compounds of group C08G18/40 · CPC title

• C08K5/0025

  Crosslinking or vulcanising agents; including accelerators · CPC title

• C09J175/14

  Polyurethanes having carbon-to-carbon unsaturated bonds · CPC title

• C08G18/4063 Primary

  Mixtures of compounds of group C08G18/62 with other macromolecular compounds · CPC title

• C08G18/694

  containing carboxylic ester groups · CPC title