US 11,866,574 B2
Resin composition for molding
Hiroshi Taniguchi, Yamaguchi (JP); and Tsukasa Gotou, Yamaguchi (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP); and TOKUYAMA SEKISUI CO., LTD., Osaka (JP)
Appl. No. 16/633,055
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP); and TOKUYAMA SEKISUI CO., LTD., Osaka (JP)
PCT Filed Sep. 26, 2018, PCT No. PCT/JP2018/035711
§ 371(c)(1), (2) Date Jan. 22, 2020,
PCT Pub. No. WO2019/065742, PCT Pub. Date Apr. 4, 2019.
Claims priority of application No. 2017-187166 (JP), filed on Sep. 27, 2017.
Prior Publication US 2020/0157335 A1, May 21, 2020
Int. Cl. C08L 27/24 (2006.01)
CPC C08L 27/24 (2013.01) [C08L 2205/03 (2013.01); C08L 2205/05 (2013.01); C08L 2205/06 (2013.01)] 13 Claims
 
1. A resin composition for molding comprising:
a chlorinated polyvinyl chloride;
an acrylic processing aid; and
an impact resistance modifier,
the acrylic processing aid comprising an acrylic resin having a weight average molecular weight of 1,100,000 to 2,400,000,
a diene component content of a polymer constituting the impact resistance modifier is 35 to 65% by mass,
the resin composition comprising the acrylic processing aid in an amount of 0.2 to 10 parts by mass and the impact resistance modifier in an amount of 5.5 to 8.0 parts by mass relative to 100 parts by mass of the chlorinated polyvinyl chloride, and
the chlorinated polyvinyl chloride having structural units (a) to (c) represented by the following formulae (a) to (c):
—CCl2—  (a),
—CHCl—  (b),
—CH2—  (c),
wherein a proportion of the structural unit (a) is 17.5 mol % or less, a proportion of the structural unit (b) is 46.0 mol % or more, and a proportion of the structural unit (c) is 37.0 mol % or less, relative to a total number of moles of the structural units (a), (b), and (c).