Processing aid, vinyl chloride resin composition containing the same, and process for producing molded article with the same

   
   

The present invention provides a processing aid that reduces ungelled products and flow marks generated on a sheet, and improves releasability of the sheet from the metallic surface of a roll, with the processing aid comprising: a copolymer (A) obtained by copolymerizing a monomer mixture comprising 70 to 90% by weight of methyl methacrylate, 10 to 30% by weight of acrylate or methacrylate other than methyl methacryrate and a different type of monomer capable of being copolymerized with those monomers; and a copolymer (B) obtained by copolymerizing a monomer mixture comprising at least 30% by weight of methyl methacrylate and a monomer having as constitutional units at least one type selected from methacrylates other than methyl methacrylate, acrylates, aromatic alkenyl compounds and other monomers.

A invenção atual fornece um dae (dispositivo automático de entrada) processando que se reduza ungelled os produtos e as marcas do fluxo gerados em uma folha, e melhore o releasability da folha da superfície metálica de um rolo, com compreender processando do dae (dispositivo automático de entrada): um copolymer (A) obtido copolymerizing uma mistura do monomer que compreende 70 a 90% pelo peso do methacrylate methyl, 10 a 30% pelo peso do acrylate ou do methacrylate à excepção do methacryrate methyl e por um tipo diferente de monomer capaz de ser copolymerized com aqueles monomers; e um copolymer (B) obtido copolymerizing uma mistura do monomer que compreende ao menos 30% pelo peso do methacrylate methyl e de um monomer que tem como unidades constitutional ao menos um tipo selecionado dos methacrylates à excepção do methacrylate methyl, dos acrylates, dos compostos aromatic do alkenyl e dos outros monomers.

 
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