초록 ▼

The invention relates to a water based polymer composition comprising a biopolymer and a synthetic polymer resin. The biopolymer results from a mechanical thermoplastic processing of a polysaccharide and/or protein starting material using shear forces in the presence of a crosslinking agent. The syn

The invention relates to a water based polymer composition comprising a biopolymer and a synthetic polymer resin. The biopolymer results from a mechanical thermoplastic processing of a polysaccharide and/or protein starting material using shear forces in the presence of a crosslinking agent. The synthetic polymer resin consists of a water based hydrophilic resin and/or hydrophilic/hydrophobic resin. These compositions have a good storage stability. They are intended for the production of coatings with fair properties.

대표청구항 ▼

1. Water based polymer composition comprising a biopolymer and a synthetic polymer resin, whereinthe biopolymer having a particle size in the submicron range with an average particle size of less than 200 nm, results from a mechanical thermoplastic processing of a polysaccharide and/or protein start

1. Water based polymer composition comprising a biopolymer and a synthetic polymer resin, whereinthe biopolymer having a particle size in the submicron range with an average particle size of less than 200 nm, results from a mechanical thermoplastic processing of a polysaccharide and/or protein starting material using shear forces of at least 500 J of specific mechanical energy per g of biopolymer, in the presence of a crosslinking agent, andthe synthetic polymer resin consists of a water based hydrophilic resin and/or hydrophilic hydrophobic resin. 2. Polymer composition according to claim 1, wherein the water based polymeric resin is in the form of a solution, or a dispersion, or an emulsion or a colloid. 3. Polymer composition according to claim 1, wherein the polymer resin is an anionic, cationic and/or nonionic modified resin. 4. Polymer composition according to claim 2, wherein the polymer resin is an anionic, cationic and/or nonionic modified resin. 5. Polymer composition according to claim 1 wherein the water based resin is selected from polyurethanes, polyesters, polyethers, polyester-urethanes, polyacrylates, polyvinylacrylates, polystyreneacrylates, styrene-butadiene, poly(meth)acrylic acid, polyvinylalcohols, polyvinylacetates, polyvinylethers, polyethylenevinylacetates, polyethylenevinylalcohols, epoxy resin, alkyds, epoxy-, urethane-, polyester, amino-, and amido(meth)acrylates, or mixtures thereof. 6. Polymer composition according to claim 2 wherein the water based resin is selected from polyurethanes, polyesters, polyethers, polyester-urethanes, polyacrylates, polyvinylacrylates, polystyreneacrylates, styrene-butadiene, poly(meth)acrylic acid, polyvinylalcohols, polyvinylacetates, polyvinylethers, polyethylenevinylacetates, polyethylenevinylalcohols, epoxy resin, alkyds, epoxy-, urethane-, polyester, amino-, and amido-(meth)acrylates, or mixtures thereof. 7. Polymer composition according to claim 3 wherein the water based resin is selected from polyurethanes, polyesters, polyethers, polyester-urethanes, polyacrylates, polyvinylacrylates, polystyreneacrylates, styrene-butadiene, poly(meth)acrylic acid, polyvinylalcohols, polyvinylacetates, polyvinylethers, polyethylenevinylacetates, polyethylenevinylalcohols, epoxy resin, alkyds, epoxy-, urethane-, polyester, amino-, and amido-(meth)acrylates, or mixtures thereof. 8. Polymer composition according to claim 4 wherein the water based resin is selected from polyurethanes, polyesters, polyethers, polyester-urethanes, polyacrylates, polyvinylacrylates, polystyreneacrylates, styrene-butadiene, poly(meth)acrylic acid, polyvinylalcohols, polyvinylacetates, polyvinylethers, polyethylenevinylacetates, polyethylenevinylalcohols, epoxy resin, alkyds, epoxy-, urethane-, polyester, amino-, and amido-(meth)acrylates, or mixtures thereof. 9. Polymer composition according to claim 5, wherein said water based resins is selected from polyurethanes, polyester-urethanes, epoxy-acrylates, polyester-acrylates, urethane-acrylates, polyacrylates, polystyrene-acrylates, styrene-butadiene and epoxy resin or mixtures thereof. 10. Polymer composition according to claim 5, wherein said water based resins comprise functional groups, such as hydroxyl, methylol, carbonyl, carboxyl, sulfonyl, amino, epoxy, acetyl acetoxy, (meth)acrylic and/or vinylic groups. 11. Polymer composition according to claim 1, wherein the biopolymer nanoparticles result from a mechanical thermoplastic processing of biopolymers selected from polysaccharides and/or from cereal, vegetable or animal proteins and mixtures and/or modified derivatives thereof. 12. Polymer composition according to claim 11, wherein the biopolymer is native or modified starch from tuber or cereal origin. 13. Polymer composition according to claim 12 wherein the starch is a starch-ether, starch-ester or oxidized starch. 14. Polymer composition according to claim 12 wherein the starch is from potato, waxy maize, tapioca or rice. 15. Polymer compos ition according to claim 1 wherein the biopolymer nanoparticles result from a mechanical thermoplastic processing comprising a crosslinking step using a cross-linking agent. 16. Polymer composition according to claim 15, wherein the cross-linking agent is a polyaldehyde. 17. Polymer composition according to claim 1 wherein the wt. % of the total dry resin with respect to the water based composition ranges from 5 to 40%. 18. Polymer composition according to claim 17, wherein the wt. % of the total dry resin with respect to the water based composition ranges from 5 to 30%. 19. Polymer composition according to claim 17 wherein the total dry resin with respect to the water based composition ranges from 5 to 20%. 20. Polymer composition according to claim 1 wherein the total dry resin with respect to the water based composition ranges from 5 to 20%. 21. Polymer composition according to claim 11, wherein the polysaccharide is select from starch, cellulose, hemi-cellulose and gums. 22. Polymer composition according to claim 11, wherein the protein is selected from wheat gluten, whey protein and gelatin. 23. Polymer composition according to claim 15, wherein the cross-linking agent is glyoxal.