Pressure Sensitive Adhesives Based on Renewable Resources, UV Curing and Related Methods
AssigneeAvery Dennison Corporation
InventorsCarol A. KOCH, Srikant PATHAK
Life of this patent
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Abstract
One embodiment is a pressure sensitive adhesive label or tape that comprises a facestock, and a pressure sensitive adhesive composition disposed on the facestock and the pressure sensitive adhesive composition includes a product made from reacting an epoxidized naturally occurring oil or fat with a dimer acid. Another embodiment of the invention is a method that comprises reacting an epoxidized naturally occurring oil or fat with a dimer acid to form a PSA precursor; coating the PSA precursor onto a carrier and curing the PSA precursor via UV radiation to form a pressure sensitive adhesive.
Claims25
A method comprising:
- reacting an epoxidized naturally occurring oil or fat with at least one dimer acid to form a pressure sensitive adhesive precursor.
A method comprising:
- reacting an epoxidized naturally occurring oil or fat with one or more reagents selected from a dimer acid, a diacid, and combinations thereof to form a pressure sensitive adhesive precursor.
A method comprising:
- reacting an epoxidized naturally occurring oil or fat with at least one dimer acid and at least one additional component selected from one or more of monoepoxides, monoacids, polyols, biobased polyols, UV enhancers, and catalysts to form the pressure sensitive adhesive precursor.
A method of forming a pressure sensitive adhesive, the method comprising:
- reacting an epoxidized naturally occurring oil or fat with diacid to form a pressure sensitive adhesive precursor;
- adding a photo catalyst to pressure sensitive adhesive precursor;
- and
- curing the pressure sensitive adhesive precursor using UV radiation to form a pressure sensitive adhesive.
A method comprising:
- reacting an epoxidized naturally occurring oil or fat with a dimer acid to form a PSA precursor;
- coating the PSA precursor onto a carrier;
- curing the PSA precursor to form a pressure sensitive adhesive.
A pressure sensitive adhesive label or tape, comprising:
- a face stock,
- a layer of pressure sensitive adhesive, at least a portion of which is produced by reacting an epoxidized naturally occurring oil or fat with one or more reagents selected from the group consisting of a dimer and a diacid.
A method of forming a pressure sensitive adhesive, the method comprising:
- reacting an epoxidized naturally occurring oil or fat with at least one additional reagent to form a PSA precursor at an elevated temperature for a given time period;
- mixing a photoacids generator with the PSA precursor;
- applying the PSA precursor onto a carrier;
- curing the PSA precursor with radiation to form a pressure sensitive adhesive.
A pressure sensitive adhesive label or tape, comprising:
- a facestock;
- and
- a pressure sensitive adhesive composition disposed on the facestock, wherein at least a portion of the pressure sensitive adhesive composition includes a product made from reacting an epoxidized naturally occurring oil or fat with one or more of a dimer acid and a diacid.
The pressure sensitive adhesive label or tape of claim 26, comprising:
- at least two layers of adhesive disposed on the lower face of the facestock, wherein at least a portion of one layer of the adhesive includes a product made from reacting an epoxidized naturally occurring oil or fat with one or more reagents selected from the group consisting of a dimer acid and a diacid.
A method comprising:
- reacting an epoxidized naturally occurring oil or fat with at least one dimer acid, optionally a diacid, and an acrylic or vinyl functionalized reagent to form a PSA precursor;
- adding a photo initiator;
- and
- curing the PSA precursor using UV radiation.
Dependencies are inferred from the claim text.