Polyol Compositions for Hot Melt Adhesives

• US 20180230346A1
• Filed: 02/05/2018
• Published: 08/16/2018
• Est. Priority Date: 02/21/2014
• Status: Active Grant

• Current Assignee: IFS Industries, Inc.
• Original Assignee: IFS Industries, Inc.
• Inventors: Chen, Zhijin
• Granted Patent: US 10,975,277 B2
• Time in Patent Office: Days
• CPC Class Codes: C08G 63/914 derived from polycarboxylic acids and polyhydroxy compounds
• CPC Class Codes: C09J 175/08 from polyethers

Abstract

Disclosed are polyether and polyesters polyol condensations. The polyols are uniquely suited for ease of manufacture and improved adhesive characteristics particularly for low surface energy materials. The materials can be used in urethane adhesives.

Claims

1. A method for the synthesis of a capped polymeric polyol, the method comprising the steps of:

(a) combining a polymeric polyol, having a molecular weight greater than 500, the polyol comprising a starter compound and repeating units of an alkylene oxide, with a glycidyl ether or ester compound at a ratio of one glycidyl compound per each active hydroxyl group in the polymeric polyol, to form a mixture; and

(b) reacting the mixture to form the capped material.

2. (canceled)

3. A polyester polyol compound comprising a polyester polyol having a molecular weight greater than 500 with at least one end cap formed from a reaction of an active hydrogen in the polyester polyol with a glycidyl compound.

4. A polyether polyol compound comprising a polyether polyol 1 having a molecular weight greater than 1000 with at least one end cap formed from a reaction of an active hydrogen in the polyether polyol with a glycidyl compound.

5. A polyether polyol compound comprising a polyether polyol 1 having a molecular weight greater than 500 with at least one end cap formed from a reaction of an active hydrogen in the polyether polyol with a glycidyl compound.

6. The polyol of claim 5 wherein the polyester comprises a substantially linear aliphatic polyester.

7. The polyol of claim 6 wherein the aliphatic polyester comprises the polymerization as esterification reaction product of a dicarboxylic acid and a diol.

8. The polyol of claim 6 wherein the polyester comprises a substantially linear polyester made from an aromatic dicarboxylic acid in a diol.

9. The polyol of claim 5 wherein the glycidyl to compound comprises a glycidyl ether or glycidyl ester.

10. The polyol of claim 9 wherein the glycidyl ester comprises a carboxylic acid ester having 5 to 20 carbon atoms.

11. The polyol of claim 10 wherein the glycidyl ester comprises a compound of formula:

12. The polyol of claim 11 wherein the total carbon content of the branched alkali group of the acid group of the glycidyl ester is such from about 9 to about 15 carbon atoms.

13. (canceled)

14. A polyurethane adhesive material comprising an isocyanate compound and a glycidyl capped polyether polyester polyol.

15. The polyurethane adhesive material of claim 14 wherein the isocyanate compound is MDI.