Patent ID: 8357758
Filing Date: 2013-01-22
Classification: C08C,C08F

Abstract:
1. Modified natural rubber particle having carbon-carbon double bonds of vinyl structures assigned to multifunctional vinyl monomers graft-copolymerized onto the surface of the modified natural rubber particle, which is prepared by a method comprising the steps of: forming inclusion complex of one or more multifunctional vinyl monomers and cyclodextrin, the one or more multifunctional vinyl monomers having two or more carbon-carbon double bonds of vinyl structures and chosen from the following (a) to (c): (a) a multifunctional vinyl monomer derived from a polyalcohol and an unsaturated carboxylic acid; (b) a multifunctional vinyl monomer derived from a polyalcohol and a multifunctional (meth)allyl compound; and (c) a styrene-based multifunctional vinyl monomer; graft-copolymerizing the resulting inclusion complex onto natural rubber particles or deproteinized natural rubber particles; and deprotecting the protected double bonds by removing the cyclodextrin from the obtained graft-copolymer.