Polyvinyl chloride-based resin molded product and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-11613639-B2
Application number	US-201816144124-A
Country	US
Kind code	B2
Filing date	Sep 27, 2018
Priority date	Oct 13, 2017
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

The present invention provides a polyvinyl chloride-based resin molded product obtained by molding a resin mixture containing 1 to 50 parts by weight of calcium carbonate having an average primary particle size of 0.01 to 0.3 μm and 5 to 18 parts by weight of an impact modifier per 100 parts by weight of a polyvinyl chloride-based resin, wherein a Charpy impact strength at 0° C. is 20 kJ/m2 or more, and a Vicat softening temperature is 85° C. or higher, and a method for manufacturing the polyvinyl chloride-based resin molded product.

First claim

The invention claimed is:

1. A polyvinyl chloride-based resin molded product obtained by molding a resin mixture containing 1 to 50 parts by weight of calcium carbonate having an average primary particle size of 0.01 to 0.15 μm and 5 to 18 parts by weight of an impact modifier per 100 parts by weight of a polyvinyl chloride-based resin, wherein a Charpy impact strength at 0° C. is 20 kJ/m 2 or more, and a Vicat softening temperature is 85° C. or higher, and wherein the impact modifier is a methyl methacrylate-butadiene-styrene graft copolymer (MBS polymer) or an acrylic rubber,
wherein the impact modifier is in a form of particles having an average particle size of 5 to 500 μm.

2. The polyvinyl chloride-based resin molded product of claim 1 , used for a product selected from the group consisting of a pipe, a pipe fitting, a drainage basin, a gutter, a window frame, a siding, a film-sheet material, a flat plate, and a corrugated plate.

3. A method for manufacturing a polyvinyl chloride-based resin molded product, wherein a resin mixture containing 1 to 50 parts by weight of calcium carbonate having an average primary particle size of 0.01 to 0.3 μm and 5 to 18 parts by weight of an impact modifier per 100 parts by weight of a polyvinyl chloride-based resin is mixed at a rotational speed of 500 to 3,000 rpm and molded by a molding method selected from the group consisting of extrusion molding, press molding, injection molding, and calender molding to obtain a resin molded product in which a Charpy impact strength at 0° C. is 20 kJ/m 2 or more, and a Vicat softening temperature is 85° C. or higher.

4. The polyvinyl chloride-based rigid molded product of claim 1 , wherein the compounding amount of the impact modifier is 10 to 18 parts by weight per 100 parts by weight of the vinyl chloride resin.

5. The polyvinyl chloride-based rigid molded product of claim 1 , wherein the resin mixture is mixed at a rotational speed of 500 to 3,000 rpm before molding it.

6. The polyvinyl chloride-based rigid molded product of claim 1 , wherein the impact modifier is a methyl methacrylate-butadiene-styrene graft copolymer (MBS polymer).

7. A polyvinyl chloride-based resin molded product obtained by molding a resin mixture containing 1 to 50 parts by weight of calcium carbonate having an average primary particle size of 0.01 to 0.15 μm and 5 to 18 parts by weight of an impact modifier per 100 parts by weight of a polyvinyl chloride-based resin, wherein a Charpy impact strength at 0° C. is 20 kJ/m 2 or more, and a Vicat softening temperature is 85° C. or higher, and
wherein the impact modifier is an acrylic rubber.

8. A polyvinyl chloride-based resin molded product obtained by molding a resin mixture containing 1 to 50 parts by weight of calcium carbonate having an average primary particle size of 0.01 to 0.15 μm and 5 to 18 parts by weight of an impact modifier per 100 parts by weight of a polyvinyl chloride-based resin, wherein a Charpy impact strength at 0° C. is 20 kJ/m 2 or more, and a Vicat softening temperature is 85° C. or higher, and wherein the impact modifier is at least one resin material selected from the group consisting of a methyl methacrylate-butadiene-styrene graft copolymer (MBS polymer), an acrylic rubber, and a chlorinated polyethylene, and wherein a resin component of the resin mixture consists of the polyvinyl chloride-based resin and the impact modifier.

9. The polyvinyl chloride-based resin molded product of claim 7 , used for a product selected from the group consisting of a pipe, a pipe fitting, a drainage basin, a gutter, a window frame, a siding, a film-sheet material, a flat plate, and a corrugated plate.

10. The polyvinyl chloride-based rigid molded product of claim 7 , wherein the compounding amount of the impact modifier is 10 to 18 parts by weight per 100 parts by weight of the vinyl chloride resin.

11. The polyvinyl chloride-based rigid molded product of claim 7 , wherein the resin mixture is mixed at a rotational speed of 500 to 3,000 rpm before molding it.

12. The polyvinyl chloride-based resin molded product of claim 8 , used for a product selected from the group consisting of a pipe, a pipe fitting, a drainage basin, a gutter, a window frame, a siding, a film-sheet material, a flat plate, and a corrugated plate.

13. The polyvinyl chloride-based rigid molded product of claim 8 , wherein the compounding amount of the impact modifier is 10 to 18 parts by weight per 100 parts by weight of the vinyl chloride resin.

14. The polyvinyl chloride-based rigid molded product of claim 8 , wherein the resin mixture is mixed at a rotational speed of 500 to 3,000 rpm before molding it.

Assignees

• Shinetsu Chemical Co

Inventors

• Kawabata Toshiki

Classifications

• C08K3/26

  Carbonates; Bicarbonates · CPC title

• C08K2201/005

  Additives being defined by their particle size in general · CPC title

• C08K2003/265

  Calcium, strontium or barium carbonate · CPC title

• C08L23/286

  Chlorinated polyethylene · CPC title

• C08L13/00

  Compositions of rubbers containing carboxyl groups · CPC title