Pressure sensitive adhesives, coatings, and films from plant oils

Patent metadata

Field	Value
Publication number	US-9441112-B2
Application number	US-201213980830-A
Country	US
Kind code	B2
Filing date	Jan 20, 2012
Priority date	Jan 20, 2011
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

Compositions useful for preparing pressure sensitive adhesives, coatings, and/or films are provided, along with methods of making and using the same. The compositions are made from renewable, plant-based materials. The compositions comprise plant oil triglycerides that are polymerized and crosslinked to yield polymer matrices. Plant-based carriers and/or tackifiers can be used in the invention, including epoxidized plant oil triglycerides, acrylated epoxidized plant oil triglycerides, and dihydroxylated plant oil triglycerides. Natural tackifiers such as rosin esters and terpenes can also be used in the compositions. Dihydroxylated plant oil triglyceride tackifiers for use in biobased and synthetic adhesives are also provided.

First claim

We claim:

1. A composition useful as a pressure sensitive adhesive, coating, or film, said composition comprising a polymer matrix comprising crosslinked plant oil triglyceride polymers having crosslinkages selected from the group consisting of esters, ethers, and combinations thereof, wherein said crosslinked plant oil triglycerides are formed from the copolymerization of:
an epoxidized plant oil triglyceride and a dihydroxylated plant oil triglyceride; or
an acrylated epoxidized plant oil triglyceride and a dihydroxylated plant oil triglyceride, and

wherein said composition comprises greater than about 50% by weight plant-based materials, based upon the total solids in the composition taken as 100% by weight.

2. The composition of claim 1 , wherein said polymer matrix consists essentially of said crosslinked plant oil triglyceride polymers.

3. The composition of claim 1 , wherein said composition is substantially free of petroleum-based ingredients.

4. The composition of claim 1 , said composition further comprising a rosin ester.

5. A composition useful for forming a pressure sensitive adhesive, coating, or film, said composition comprising a carrier and a tackifier, wherein said carrier is selected from the group consisting of epoxidized plant oil triglycerides and acrylated epoxidized plant oil triglycerides, and said tackifier is a dihydroxylated plant oil triglyceride, wherein said composition comprises greater than about 50% by weight plant-based materials, based upon the total solids in the composition taken as 100% by weight.

6. The composition of claim 5 , said composition further comprising a solvent system, said carrier and tackifier being dispersed in said solvent system, wherein said solvent system is selected from the group consisting of water, alcohols, methyl acetate, tetrahydrofuran, methanechloride, and mixtures thereof.

7. The composition of claim 5 , said composition being substantially free of any solvents.

8. The composition of claim 5 , wherein said composition comprises a mixture of an epoxidized plant oil triglyceride carrier and a dihydroxylated plant oil triglyceride tackifier.

9. The composition of claim 8 , said composition further comprising a rosin ester.

10. The composition of claim 5 , wherein said composition comprises a mixture of an acrylated epoxidized plant oil triglyceride carrier and a dihydroxylated plant oil triglyceride tackifier.

11. The composition of claim 10 , further comprising a rosin ester.

12. The combination of:
a substrate having a surface; and
a layer of an adhesive, coating, or film adjacent said substrate surface, wherein said layer is formed from the composition according to claim 5 .

Assignees

• Sun Xiuzhi Susan
• Ahn Byungjun Kollbe
• Wang Donghai
• Univ Kansas State

Inventors

• Sun Xiuzhi Susan
• Ahn Byungjun Kollbe
• Wang Donghai

Classifications

• C09D191/00 Primary

  Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof (polishing compositions, ski waxes C09G) · CPC title

• C08L93/04

  Rosin · CPC title

• Y10T428/2865

  including monomer or polymer of carbohydrate [e.g., starch, dextrin, etc.] Or protein [e.g., casein, animal protein, etc.] Or derivative thereof · CPC title

• C09D193/04

  Rosin · CPC title

• Y10T428/31844

  Of natural gum, rosin, natural oil or lac · CPC title