Composition based on a vinyl halide polymer
AssigneeSolvay SA
InventorsVincent Bodart, Claudine Bloyaert, Dirk Dompas
Life of this patent
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Abstract
Composition comprising at least one vinyl halide polymer and 0.1 to 5% by weight, relative to the weight of the vinyl halide polymer, of at least one polymer of at least one acrylic ester obtained by polymerization in solution in a liquid medium comprising at least one chain transfer agent chosen among the C3-C20 hydrocarbons containing at least one secondary alcohol function. Process for its manufacture, article obtained starting from this composition and use of this composition for manufacturing sheets and films via calendaring or for manufacturing profiles by extrusion. Process for the manufacture of a polymer of at least one acrylic ester which can be used in the composition.
Claims15
A method for forming a polymer composition, the method comprising:
- forming an acrylic ester polymer by polymerizing at least one acrylic ester in a solution having a liquid medium comprising at least one chain transfer agent selected from the group consisting of C3-C20 hydrocarbons having at least one secondary alcohol function, wherein a ratio of the weight of the at least one acrylic ester (kg) to the volume of the at least one chain transfer agent (l) is greater than or equal to 1.5/1 and less than or equal to 5/1;
- and
- forming a blend comprising the acrylic ester polymer and a vinyl halide polymer by polymerizing at least one vinyl halide monomer in an aqueous suspension comprising at least a portion of the acrylic ester polymer and at least a portion of the at least one chain transfer agent.
Dependencies are inferred from the claim text.