Chlorinated vinyl chloride-based resin

Patent metadata

Field	Value
Publication number	US-12104051-B2
Application number	US-202017436916-A
Country	US
Kind code	B2
Filing date	Mar 27, 2020
Priority date	Mar 29, 2019
Publication date	Oct 1, 2024
Grant date	Oct 1, 2024

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 A 150 component, a B 150 component, and a C 150 component, and having a percentage of the C 150 component (C 150 component/(A 150 component+B 150 component+C 150 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 1 H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into three curves derived from the A 150 component, the B 150 component, and the C 150 component in order of shorter relaxation time using the least square method.

First claim

The invention claimed is:

1. A chlorinated polyvinyl chloride resin,
comprising three components including a A 150 component, a B 150 component, and a C 150 component, and
having a percentage of the C 150 component (C 150 component/(A 150 component+B 150 component+C 150 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 1 H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into three curves derived from the A 150 component, the B 150 component, and the C 150 component in order of shorter relaxation time using the least square method,
wherein the chlorinated polyvinyl chloride resin has an amount of added chlorine of 6.2% by mass or more and 12.2% by mass or less, and
the chlorinated polyvinyl chloride resin contains units (a) to (c) represented by the following formulas (a) to (c), and a proportion of the structural unit (b) is 15.0 mol % or higher and 30.0 mol % or lower, relative to a total number of moles of the structural units (a) to (c)
—CH 2 —CHCl—  (a)

—CH 2 —CCl 2 —  (b)

—CHCl—CHCl—  (c).

2. The chlorinated polyvinyl chloride resin according to claim 1 ,
wherein the chlorinated polyvinyl chloride resin comprises two components including a A 100 component and a B 100 component, and has a percentage of the B 100 component (B 100 component/(A 100 component+B 100 component)) of less than 9.0%, and
the two components are identified by measuring the chlorinated polyvinyl chloride resin by a solid echo method using pulse NMR at 100° C. to give a free induction decay curve of 1 H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into two curves derived from the A 100 component and the B 100 component in order of shorter relaxation time using the least square method.

3. The chlorinated polyvinyl chloride resin according to claim 2 ,
wherein a product of a relaxation time of the A 100 component and the percentage of the B 100 component (Relaxation time (ms) of A 100 component×Percentage (%) of B 100 component) is 0.12 (ms·%) or less.

4. The chlorinated polyvinyl chloride resin according to claim 1 , having a degree of polymerization of 100 to 2,000.

5. A resin composition for molding, comprising the chlorinated polyvinyl chloride resin according to claim 1 .

6. The resin composition for molding according to claim 5 , comprising 1 to 30% by mass of an impact resistance modifier.

7. A molded article molded from the resin composition for molding according to claim 6 .

8. The molded article according to claim 7 , further comprising a glass fiber or a carbon fiber.

9. The molded article according to claim 7 , which is a member for use in transportation machinery.

10. The molded article according to claim 7 , which is a member for use in battery systems.

11. The chlorinated polyvinyl chloride resin according to claim 1 ,
wherein a proportion of the structural unit (a) is 30.0 mol % or higher and 60.0 mol % or lower, relative to the total number of moles of the structural units (a) to (c).

12. The chlorinated polyvinyl chloride resin according to claim 1 ,
wherein a proportion of the structural unit (c) is 40.0 mol % or lower, relative to the total number of moles of the structural units (a) to (c).

Assignees

• Sekisui Chemical Co Ltd
• Tokuyama Sekisui Co Ltd

Inventors

• Matsumura Kenichi
• MASHINO Norikazu
• Murakami Kento
• Nakajima Nami
• Kusaka Yasunari
• Sugaya Takehisa
• Yamagata Masahiko

Classifications

• C08L2203/30

  used for thermoforming · CPC title

• C08L2201/08

  Stabilised against heat, light or radiation or oxydation · CPC title

• C08J5/043

  with glass fibres · CPC title

• C08J5/042

  with carbon fibres · CPC title

• C08K7/14 Primary

  Glass · CPC title