C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/2012, 400/20
C08F 265/06 (2006.01)
Patent
CA 2032964
A method for preparing a vinyl chloride resin comprises the steps of copolymerizing 80 to 99.9% by weight of an alkyl acrylate and/or an alkyl methacrylate whose homopolymer has a second-order transition temperature of not more than -10°C , 20 to 0.1% by weight of allyl methacrylate and/or triallyl isocyanurate and 0 to 20% by weight of a monomer copolymerizable with these monomers to form an acrylic rubbery copolymer having an average particle size ranging from 0.01 to 0.5 µ m and then graft-copolymerizing vinyl chloride monomer to the acrylic rubbery copolymer. The graft copolymerized resins obtained according to the foregoing method can be mixed with a variety of additives such as heat stabilizers, lubricants, processing aids, antioxidant, fillers, ultraviolet absorbers, pigments or the like which are commonly employed in the fabrication of vinyl chloride resins and can be processed and/or molded according to the usual manner. The graft copolymerized resins are excellent in not only impact resistance but also tensile properties and, therefore, these resins can be used for manufacturing construction materials, high impact pipes or the like in which well-balanced impact resistance and tensile properties are required and can provide products which can be used in the open air.
Masuko Seiichi
Ryu Tomonari
Umeda Yoshihiro
Mitsui Chemicals Inc.
Sim & Mcburney
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