Patent ID: 8609771
Filing Date: 2013-12-17
Classification: C08J,C08L,Y10T

Abstract:
1. A process for preparing a composition comprising a vinylidene chloride polymer and at least one separate ε-caprolactone polymer, comprising: a) preparing the vinylidene chloride polymer by polymerization of vinylidene chloride and at least one comonomer that is copolymerizable with vinylidene chloride in a vinylidene chloride polymerization medium, wherein: during the polymerization of the vinylidene chloride and the at least one comonomer that is copolymerizable with vinylidene chloride, at least one ε-caprolactone polymer prepared prior to and independently of the vinylidene chloride polymer in another polymerization medium from which it was isolated is added into the vinylidene chloride polymerization medium, said polymerization of the vinylidene chloride and the at least one comonomer that is copolymerizable with vinylidene chloride provides said vinylidene chloride polymer, said process provides said composition comprising said vinylidene chloride polymer and said at least one separate ε-caprolactone polymer, and the vinylidene chloride polymer is a copolymer consisting of vinylidene chloride in an amount of at least 50 wt % and at least one comonomer chosen from (meth)acrylic monomers corresponding to the general formula : in which R 1 is chosen from hydrogen and the methyl radical; and R 2 is the —CO—R 3 radical in which R 3 is chosen from the —OH radical and —O—R 4 radicals, with R 4 chosen from linear or branched alkyl radicals containing from 1 to 18 carbon atoms optionally bearing one or more —OH radicals, epoxyalkyl radicals containing from 2 to 10 carbon atoms, and alkoxyalkyl radicals containing a total of 2 to 10 carbon atoms.