Acrylate Hybride Polymer Based On Natural Fatty Acids And Method For The Manufacture Thereof
AssigneeValtion Teknillinen Tutkimuskesus
InventorsNina Heiskanen, Pia Willberg, Salme Koskimies, Janne Hulkko, Pirita Ushanov, Sirkka-Liisa Maunu
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Abstract
The invention relates to acrylate modified, natural fatty acid based hybride polymers, and to a method for their preparation. The invention also relates to the use of the modified natural fatty acid based hybride polymers as binding agents especially in water based coatings, adhesives and composites and as environmentally friendly wood impregnating agents. The acrylate-modified natural fatty acid based hybride polymer is a block polymer formed of acrylate segments and fatty acid segments.
Claims12
1-11. (canceled)
Acrylate-modified natural fatty acid based hybride polymer, characterised in that it is a polymer formed of acrylate segments originating from acrylate monomers and fatty acid segments originating from fatty acid starting material containing double bonds, having molecular weight of 800-6000000, and in which the fatty acid segment having molecular weight of 200-2,000 comprises fatty acids or mono- and/or oligoesters of fatty acids, and the hybride polymer is manufactured by a method where acrylate monomer(s), mixture of natural fatty acid(s) or mixture of natural fatty acid ester(s) and one or more surfactants and optionally one or more co-surfactants are mixed at a temperature of 20-80° C., then pH of the mixture is adjusted between 6-9 with a base, then the reaction mixture is then emulsified to an aqueous emulsion optionally containing one or more surfactants, and agitated, the emulsion is then warmed to a temperature of 30-90° C. and polymerisation is carried out at 30-100° C. in the presence of a polymerising initiator with mixing rate of 100-2000 rpm.
A method for preparing acrylate-modified natural fatty acid based hybride polymers, characterised in that acrylate monomer(s), mixture of natural fatty acid(s) or mixture of natural fatty acid ester(s) and one or more surfactants and optionally one or more co-surfactants are mixed at a temperature of 20-80° C., then pH of the mixture is adjusted between 6-9 with a base, then the reaction mixture is then emulsified to an aqueous emulsion optionally containing one or more surfactants, and agitated, the emulsion is then warmed to a temperature of 30-90° C. and polymerisation is carried out at 30-100° C. in the presence of a polymerising initiator with mixing rate of 100-2000 rpm.
Dependencies are inferred from the claim text.