Abstract:
The present invention provides a chlorinated vinyl chloride resin composition for a window frame having excellent properties including moldability, heat resistance, and impact resistance and capable of preventing or reducing deformation such as warpage or damage even after exposure to sunlight for a long time. Provided is a chlorinated vinyl chloride resin composition for a window frame, containing a chlorinated vinyl chloride resin and an infrared reflective pigment.
Abstract:
The present invention provides a chlorinated polyvinyl chloride resin that enables excellent continuous productivity in molding and that enables a molded article to have both processability and unevenness-preventing properties. Provided is a chlorinated polyvinyl chloride resin having, in Raman measurement by Raman spectroscopy, an average of a ratio (A/B) of a peak intensity A observed in a range of 660 to 700 cm−1 to a peak intensity B observed in a range of 600 to 650 cm−1 of 0.50 to 2.00, and a standard deviation of the A/B of 0.090 or less.
Abstract:
The present invention provides a chlorinated polyvinyl chloride resin that enables excellent continuous productivity in molding and that enables a molded article to have both processability and unevenness-preventing properties. Provided is a chlorinated polyvinyl chloride resin having, in Raman measurement by Raman spectroscopy, an average of a ratio (A/B) of a peak intensity A observed in a range of 660 to 700 cm−1 to a peak intensity B observed in a range of 600 to 650 cm−1 of 0.50 to 2.00, and a standard deviation of the A/B of 0.090 or less.
Abstract:
The present invention provides a chlorinated polyvinyl chloride resin that has resistance to thermal decomposition, provides excellent continuous productivity in molding, and imparts both processability and unevenness-preventing properties to a molded article. The present invention relates to a chlorinated polyvinyl chloride resin, containing three components including a A150 component, a B150 component, and a C150 component, and having a percentage of the C150 component (C150 component/(A150 component+B150 component+C150 component)) of less than 8.0%, the three components being identified by measuring the chlorinated polyvinyl chloride resin by a solid echo method using pulse NMR at 150° C. to give a free induction decay curve of 1H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into three curves derived from the A150 component, the B150 component, and the C150 component in order of shorter relaxation time using the least square method.
Abstract:
The present invention provides a chlorinated polyvinyl chloride resin that enables a molded article to have both processability and unevenness-preventing properties and also high gloss. Provided is a chlorinated polyvinyl chloride resin having an average of a ratio (A/B) of a peak intensity A observed in a range of 660 to 700 cm−1 to a peak intensity B observed in a range of 600 to 650 cm1 of 0.50 to 2.00 in Raman imaging measurement by Raman spectroscopy, and having a standard deviation of the ratio (A/B) of the peak intensity A to the peak intensity B of 0.100 to 0.200 in Raman measurement by Raman spectroscopy.
Abstract:
Provided is a reagent for measuring hemoglobins capable of satisfactorily causing hemolysis and measuring hemoglobins with high accuracy. The reagent for measuring hemoglobins according to the present invention is a reagent for measuring hemoglobins used for measuring hemoglobins by cation exchange liquid chromatography, including a specific nonionic surfactant or a specific amphoteric surfactant.
Abstract:
The present invention provides a method for producing a chlorinated polyvinyl chloride which is excellent in thermal stability (initial discoloration resistance, heat-resistant stability) and is capable of providing a transparent article. The present invention relates to a method for producing a chlorinated polyvinyl chloride through thermal chlorination of a reaction solution including a vinyl chloride aqueous suspension that contains a vinyl chloride resin in a hermetically sealable reaction vessel, the method including: step 1 of initiating thermal chlorination by heating the reaction solution to 55° C. to 70° C. and then introducing chlorine into the reaction vessel; step 2 of raising the temperature of the reaction solution while maintaining the temperature inside the reaction vessel not higher than the glass transition temperature of a partially chlorinated polyvinyl chloride; and step 3 of carrying out the thermal chlorination at a predetermined temperature of 85° C. or higher but lower than 115° C. after the chlorine content of the partially chlorinated polyvinyl chloride reaches 58% by weight or more, the steps 1 to 3 being performed under stirring at a net stirring power (Pv) inside the reaction vessel of 0.2 to 2.5 kw/m3 per 1 m3 of the reaction solution.
Abstract:
Chlorinated vinyl chloride resin may be produced through a heat chlorination reaction of an aqueous suspension of vinyl chloride resin in a hermetically sealable reaction vessel, the method including carrying out a first heat chlorination reaction while raising the temperature of an aqueous suspension of a vinyl chloride resin powder to a predetermined temperature within the range of 85° C. to 95° C., and subsequently carrying out a second heat chlorination reaction at the predetermined temperature.
Abstract:
A thermally expandable multilayer packing for building material, having protruding parts and a body portion in the cross-sectional shape based a plane perpendicular to the longitudinal direction. The thermally expandable multilayer packing includes both a thermally expandable resin composition layer and a thermoplastic resin composition layer, wherein the thermally expandable resin composition forming the thermally expandable resin composition layer contains 100 parts by weight of a resin component containing a chlorinated polyvinyl chloride resin and/or an EPDM, 3 to 300 parts by weight of a thermally expandable graphite, 3 to 200 parts by weight of an inorganic filler and 20 to 200 parts by weight of a plasticizer. The thermally expandable resin composition layer and the thermoplastic resin composition layer are formed by simultaneous co-extrusion using the thermally expandable resin composition and the thermoplastic resin composition.
Abstract:
The present invention provides a chlorinated polyvinyl chloride resin that not only has high heat resistance and high mechanical strength but also is excellent in molding processability and is very easy to soften and additionally enables production of a molded article with high gloss. The present invention relates to a chlorinated polyvinyl chloride resin, containing three components including a A150 component, a B150 component, and a C150 component, and having a percentage of the C150 component (C150 component/(A150 component+B150 component+C150 component)) of 8.0% or more and 30.0% or less, the three components being identified by measuring the chlorinated polyvinyl chloride resin by a solid echo method using pulse NMR at 150° C. to give a free induction decay curve of 1H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into three curves derived from the A150 component, the B150 component, and the C150 component in order of shorter relaxation time using the least square method.