Adhesive compositions comprising a polyfarnesene
AssigneeAmyris Biotechnologies, Inc.
InventorsDerek James McPhee, Matthew J. Graham
Life of this patent
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Abstract
Adhesive composition comprises a polyfarnesene and a tackifier. The polyfarnesene can be a farnesene homopolymer derived from a farnesene (e.g., α-farnesene or β-farnesene) or a farnesene interpolymer derived from a farnesene and at least a vinyl monomer. In some embodiments, the at least one vinyl monomer is ethylene, an α-olefin such as styrene, or a substituted or unsubstituted vinyl halide, vinyl ether, acrylonitrile, acrylic ester, methacrylic ester, acrylamide or methacrylamide, or a combination thereof. The composition disclosed herein can be used as a hot melt adhesive, a pressure sensitive adhesive or the like.
Claims20
An adhesive composition comprising a polyfarnesene and a tackifier, wherein the polyfarnesene has formula (X′):
- wherein n is from 1 to about 100,000;
- m is from 0 to about 100,000;
- X has one or more of formulae (I′)-(VIII′):
- Y has formula (IX′):
- wherein R1 has formula (XI):
- and
- R2 has formula (XII):
- R3 has formula (XIII):
- and
- R4 has formula (XIV):
- wherein each of R5, R6, R7 and R8 is independently H, alkyl, cycloalkyl, aryl, cycloalkenyl, alkynyl, heterocyclyl, alkoxy, aryloxy, carboxy, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, acyloxy, nitrile or halo, and wherein formula (I′) is in an amount of at most about 80 wt. % and formula (II′) is in an amount of from about 5 wt. % to about 99 wt. %, based on a total weight of the polyfarnesene, with a proviso that when m is 1 or greater, a mole percent ratio of X to Y is from about 1:4 to about 100:1 and wherein the tackifier has a ring and ball softening point equal to or greater than 60° C., as measured in accordance with ASTM 28-67 and amount of the tackifier is from about 0.1 wt. % to about 70 wt. %.
An adhesive composition comprising a polyfarnesene and a tackifier, wherein the polyfarnesene is prepared by polymerizing β-farnesene in the presence of a catalyst, wherein cis-1,4-microstructure in the polyfarnesene is in an amount of at most about 80 wt. %, based on a total weight of the polyfarnesene, and wherein the tackifier has a ring and ball softening point equal to or greater than 60° C., as measured in accordance with ASTM 28-67 and an amount of the tackifier is from about 0.1 wt. % to about 40 wt. %.
Dependencies are inferred from the claim text.