The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2018
Filed:
Jun. 14, 2014
Arizona Chemical Company, Llc, Jacksonville, FL (US);
Tibor Pernecker, Pooler, GA (US);
Christopher J Holmes, Pooler, GA (US);
Leigh E Quinlan, Pooler, GA (US);
Arizona Chemical Company, LLC, Jacksonville, FL (US);
Abstract
Water-dispersible adducted rosin esters, a process for making them, and their use in aqueous tackifier dispersions for pressure-sensitive adhesives are disclosed. Reaction of a rosin with a polyol gives a rosin ester intermediate, which is then reacted with a dienophile to produce an adducted rosin ester. The adducted rosin ester is further esterified with a polyethylene glycol having an Mw<700 to produce the water-dispersible adducted rosin ester. Esterification with the low-molecular-weight PEG imparts good water dispersibility to the adducted rosin ester while maintaining compatibility with other tackifier components. Combination of the aqueous tackifier dispersions with polymer emulsions, particularly acrylics, gives pressure-sensitive adhesives that deliver good loop tack and peel properties compared with commercial alternatives, even when the coat weight is reduced by 20%.