Biobased aqueous polyurethane dispersions
AssigneeEvoco Limited
InventorsJason James Robinson, Nina Heidarzadeh, Radu Lucian Vicol, Ayodele Fatona, Adel Kakroodi, Guerino G. Sacripante
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Abstract
An aqueous polyurethane dispersion includes particles of polyurethane in water, wherein the polyurethane is derived from an organic diisocyanate, a hydrophilic monomer, a neutralizer, a chain extender, and a polyester resin, the polyester resin being a random copolymer having randomly distributed subunits of formula 1: where: R is ethylene, octylene, or decylene, a is from about 40 to about 100 mole % of the polyester resin, b is from 0 to about 30 mole % of the polyester resin, c is from 0 to about 30 mole % of the polyester resin, and a+b+c=100 mole % of the polyester resin.
Claims27
An aqueous polyurethane dispersion comprising particles of polyurethane in water, wherein the polyurethane is derived from an organic diisocyanate, a hydrophilic monomer, a neutralizer, a chain extender, and a polyester resin, the polyester resin being a random copolymer having randomly distributed subunits of formula 1:
- where:
- R is ethylene, octylene, or decylene,
- a is from about 40 to about 100 mole % of the polyester resin,
- b is from 0 to about 30 mole % of the polyester resin,
- c is from 0 to about 30 mole % of the polyester resin, and
- a+b+c=100 mole % of the polyester resin,
- wherein the polyester resin of formula 1 is derived from at least one organic diol selected from the group consisting of 1,3-propanediol, 1,2-propylene glycol, rosin diol, 1,4-butane diol, and 1,6-hexanediol, and
- wherein the rosin diol is derived from at least one rosin acid selected from the group consisting of abietic acid, palustric acid, dehydroabietic acid, neo-abietic acid, levo-pimaric acid, pimaric acid, sandaracopimaric acid, iso-pimaric acid, tetrahydroabietic acid, and mixtures thereof.
An aqueous polyurethane dispersion comprising particles of polyurethane in water, wherein the polyurethane is derived from an organic diisocyanate, a hydrophilic monomer, a neutralizer, a chain extender, and a polyester resin, the polyester resin being a random copolymer having randomly distributed subunits of formula 1:
- where:
- R is ethylene, octylene, or decylene,
- a is from about 40 to about 100 mole % of the polyester resin,
- b is from 0 to about 30 mole % of the polyester resin,
- c is from 1 to about 30 mole % of the polyester resin, and
- a+b+c=100 mole % of the polyester resin,
- wherein the polyester resin of formula 1 is derived from a rosin diol derived from at least one rosin acid selected from the group consisting of abietic acid, palustric acid, dehydroabietic acid, neo-abietic acid, levo-pimaric acid, pimaric acid, sandaracopimaric acid, iso-pimaric acid, tetrahydroabietic acid, and mixtures thereof.
Dependencies are inferred from the claim text.