Abstract: A process for reducing the amount of residual monomer in aqueous polymerization emulsion by using a sequential polymerization steps, The first step consists in adding an emulsion, of vinyl ester of alkyl of C1 to C18 carboxylic acids, to water containing a radical initiator, the second step consists in adding further an emulsion of alkyl acrylate and/or methacrylate, and the third step consists in c) adding to polymeric emulsion, resulting of the steps a) and b), pure liquid acrylate or methacrylate with alkyl chain of C1 to C12.

Abstract: This invention relates to a copolymer composition comprising vinyl ester of 2-ethyl hexanoic acid (VEHA), and particularly to pressure-sensitive adhesive compositions based on VEHA reacted with (meth)acrylate monomers. The present adhesive compositions provide a film with high cohesion and adhesion values, and more particularly to pressure-sensitive adhesive compositions based on VEHA reacted with (meth)acrylate monomers and VeoVa 10. The present adhesive compositions provide a film with high cohesion and adhesion values with Peel on Teflon of at least 2 N/inch.

Abstract: Polymer compositions for elastomeric coatings or sealants provide excellent balance properties between elongation to break, early water resistance, alkaline resistance and adhesion on unpolar substrates. The composition is free of volatile and toxic monomer such as acrylonitrile, or substituted acrylonitrile.

Abstract: A process for reducing the amount of residual monomer in aqueous polymerization emulsion by using a sequential polymerization steps, The first step consists in adding an emulsion, of vinyl ester of alkyl of C1 to C18 carboxylic acids, to water containing a radical initiator, the second step consists in adding further an emulsion of alkyl acrylate and/or methacrylate, and the third step consists in c) adding to polymeric emulsion, resulting of the steps a) and b), pure liquid acrylate or methacrylate with alkyl chain of C1 to C12.

Abstract: This invention relates to a copolymer composition comprising vinyl ester of 2-ethyl hexanoic acid (VEHA), and particularly to pressure-sensitive adhesive compositions based on VEHA reacted with (meth)acrylate monomers. The present adhesive compositions provide a film with high cohesion and adhesion values, and more particularly to pressure-sensitive adhesive compositions based on VEHA reacted with (meth)acrylate monomers and VeoVa 10. The present adhesive compositions provide a film with high cohesion and adhesion values with Peel on Teflon of at least 2 N/inch.

Abstract: Polymer compositions for elastomeric coatings or sealants provide excellent balance properties between elongation to break, early water resistance, alkaline resistance and adhesion on unpolar substrates. The composition is free of volatile and toxic monomer such as acrylonitrile, or substituted acrylonitrile.

Abstract: There are disclosed star shaped thermoplastic elastomers made of acrylic block copolymers obtained by transition metal catalysed radical polymerisation. The elastomers comprise core arms obtained from monomers or mixture of monomers, whose Tg is from about ?65° C. to about ?20° C., and of shell arms obtained from monomers or mixture of monomers, whose Tg is from about 70° C. to about 160° C. The core copolymer has a polydispersity of 2 or higher and the final copolymer has a polydispersity of from 3 to 10.

Abstract: There are disclosed star shaped thermoplastic elastomers made of acrylic block copolymers obtained by transition metal catalysed radical polymerisation. The elastomers comprise core arms obtained from monomers or mixture of monomers, whose Tg is from about ?65° C. to about ?20° C., and of shell arms obtained from monomers or mixture of monomers, whose Tg is from about 70° C. to about 160° C. The core copolymer has a polydispersity of 2 or higher and the final copolymer has a polydispersity of from 3 to 10.