Pressure sensitive adhesives based on fatty acids

A method for making a pressure sensitive adhesive comprising:

• (a) making epoxidized oleic acid, an epoxidized linoleic acid (including fully and partially epoxidized linoleic acid), or an epoxidized linolenic acid (including fully and partially epoxidized linolenic acid) from at least one plant oil, marine oil, other ester of unsaturated fatty acid, or making mixture thereof;
• and
• (b) polymerizing the epoxidized oleic acid, the epoxidized linoleic acid, the epoxidized linolenic acid, or the mixture thereof to produce a pressure sensitive adhesive.

The method of claim wherein the epoxidized fatty acid has a structure of R—X1—R—X2—R—X3—R—C(═O)—OH, wherein X1, X2, and X3 each independently represent

• or a substituted or unsubstituted alkyl or heteroalkyl group, provided at least one of X1, X2, or X3 is
• and each R independently represents hydrogen or a substituted or unsubstituted alkyl or heteroalkyl group.

(canceled)

20-21. (canceled)

A method for making a pressure sensitive adhesive construct comprising:

• making at least one epoxidized fatty acid from at least one plant oil, marine oil, other ester of unsaturated fatty acid, or a mixture thereof;
• and
• forming on a backing substrate a pressure sensitive adhesive from the resulting at least one epoxidized fatty acid.

31-32. (canceled)

A pressure sensitive adhesive comprising a cross-linked hydroxyl-functional polyester obtained by reacting (i) at least one epoxidized fatty acid and, optionally, (ii) (a) at least one epoxide compound having at least two epoxy groups or (b) at least one carboxylic acid compound having at least two carboxylic acid groups.