Sekisui Chemical Co., Ltd.

Tokuyama Sekisui Co., Ltd.

Tomohiro Horinouchi

Yasunari Kusaka

Nami Nakajima

Ryota Yamasugi

Yoshito Arai

Mitsuo Matsumoto

Hiroshi Taniguchi

The present invention aims to provide a resin composition for molding that makes it possible to achieve excellent continuous productivity and to produce a molded article having high surface smoothness, capable of reducing defective molding, less likely to crack during use, and also having excellent shock resistance. The present invention also aims to provide a molded article including the resin composition for molding. Provided is a resin composition for molding, containing: a chlorinated polyvinyl chloride resin; and a melt additive, the resin composition containing three components including a Acomponent, a Bcomponent, and a Ccomponent, and having a percentage of the Ccomponent [Ccomponent/(Acomponent+Bcomponent+Ccomponent)] of 30% or less, the three components being identified by measuring the resin composition by a solid echo method using pulse NMR at 100° C. to give a free induction decay curve ofH spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into three curves derived from the Acomponent, the Bcomponent, and the Ccomponent in order of shorter relaxation time using the least square method.

Molding resin composition and molded article

The present invention provides a resin composition for molding having excellent thermal meltability and capable of providing a molded article that is less likely to crack from a resin weld during use and has excellent surface gloss, and a molded article including the resin composition for molding. Provided is a resin composition for molding, containing: a chlorinated polyvinyl chloride resin; a polyvinyl chloride resin; and a melt additive, the resin composition having an area ratio of a peak B observed in a range of 0.6 to 1.0 ppm to a peak A observed in a range of 9.5 to 10 ppm (Area of peak B/Area of peak A) of 1 to 1,000 when aH NMR spectrum is measured by solution NMR.

Resin composition for molding and molded article

The present invention provides a resin composition for molding capable of producing a molded article that has excellent heat distortion resistance, excellent mechanical properties, high impact resistance, and high transparency and has a smaller change in weight at high temperature. The present invention also provides a molded article and a joint each produced from the resin composition for molding. Provided is a resin composition for molding, including: a chlorinated polyvinyl chloride resin; a polyvinyl chloride; and a thermal stabilizer, the chlorinated polyvinyl chloride resin containing structural units (a) to (c) represented by the following formulas (a) to (c) in proportions of 5 to 90 mol % of the structural unit (a), 5 to 40 mol % of the structural unit (b), and 5 to 55 mol % of the structural unit (c) based on a total number of moles of the structural units (a), (b), and (c), the polyvinyl chloride being contained in an amount of 1 to 30 parts by mass based on 100 parts by mass of the chlorinated polyvinyl chloride resin,[Chem. 1]—CH—CHC1-  (a)—CH—CC1-  (b)—CHC1-CHC1-  (c).

Resin composition for molding

Growing community of inventors

Yamaguchi, Japan

Tomohiro Horinouchi