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US 8,137,818 B2Granted
Poly(lactic acid)-containing compositions for use in imparting oil, grease, or water resistance to paper
AssigneeTate & Lyle Ingredients Americas LLC
InventorsMichael D. Harrison, Geoffrey A. R. Nobes, Penelope A. Patton, Shiji Shen, Henk Westerhof
Life of this patent
Estimating the term…
Abstract
Herein disclosed is a composition containing from about 5 weight parts to about 50 weight parts of a branched polylactic acid; from about 50 weight parts to about 95 weight parts of water; and from about 0.1 weight parts to about 1 weight part of a first surfactant. The composition can be coated onto a substrate containing paper or paperboard and having a first surface and a second surface, to form a paper product having oil, grease, and moisture resistance.
Claims21
A composition, comprising:
- from about 5 weight parts to about 50 weight parts of a branched polylactic acid;
- from about 50 weight parts to about 95 weight parts of water;
- and
- from about 0.1 weight parts to about 1 weight part of a first surfactant;
- wherein the branched polylactic acid comprises from about 3.3 weight parts to about 33 weight parts lactic acid residues;
- from about 1.3 weight parts to about 13 weight parts polyol residues, wherein the polyol has a molecular weight from about 1000 Da to about 20,000 Da and an OH value from about 10 mg KOH/g to about 100 mg KOH/g;
- and from about 0.4 weight parts to about 4 weight parts anhydride residues.
4 more elements
A paper product, comprising:
- a substrate containing paper or paperboard and having a first surface and a second surface, and
- a coating applied at least to part of the first surface of the substrate, wherein the coating contains from about 5 weight parts to about 50 weight parts of a branched polylactic acid and from about 0.1 weight parts to about 1 weight part of a first surfactant, wherein the branched polylactic acid comprises from about 3.3 weight parts to about 33 weight parts lactic acid residues;
- from about 1.3 weight parts to about 13 weight parts polyol residues, wherein the polyol has a molecular weight from about 1000 Da to about 20,000 Da and an OH value from about 10 mg KOH/g to about 100 mg KOH/g;
- and from about 0.4 weight parts to about 4 weight parts anhydride residues.
1 more element
Dependencies are inferred from the claim text.