Vinyl chloride resin composition, vinyl chloride resin molded product, and laminate

• US 10,800,146 B2
• Filed: 12/04/2014
• Issued: 10/13/2020
• Est. Priority Date: 12/10/2013
• Status: Active Grant

• Current Assignee: ZEON Corporation
• Original Assignee: ZEON Corporation
• Inventors: Fujiwara, Takanori
• Primary Examiner(s): Vo, Hai
• Application Number:
  US15/037,108
• Publication Number:
  US 20160288463A1
• Time in Patent Office: 2,140 Days
• CPC Class Codes: B32B 2266/0278 Polyurethane
• CPC Class Codes: B32B 2307/406 Bright, glossy, shiny surface
• CPC Class Codes: B32B 2307/50 having particular mechanical properties
• CPC Class Codes: B32B 2307/546 Flexural strength; Flexion stiffness
• CPC Class Codes: B32B 2605/003 Interior finishings
• CPC Class Codes: B32B 27/065 of foam
• CPC Class Codes: B32B 27/304 comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B60R 13/0256 Dashboard liners
• CPC Class Codes: C08K 5/10 Esters; Ether-esters
• CPC Class Codes: C08K 5/103 with polyalcohols
• CPC Class Codes: C08K 5/12 of cyclic polycarboxylic acids
• CPC Class Codes: C08L 2205/025 containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
• CPC Class Codes: C08L 27/06 Homopolymers or copolymers of vinyl chloride

Abstract

Provided is a vinyl chloride resin composition that can provide a molded product having superior flexibility at low temperatures. The vinyl chloride resin composition includes (a) a vinyl chloride resin and (b) a diester plasticizer formed from a compound represented by formula (1) shown below. In formula (1), R¹ and R³ are monovalent hydrocarbon groups that may be the same or different and R² is a divalent hydrocarbon group. Moreover, (a) the vinyl chloride resin includes (x) a base vinyl chloride resin in an amount of from 70 mass % to 100 mass % and (y) vinyl chloride resin fine particles in an amount of from 0 mass % to 30 mass %.

Claims

1. A vinyl chloride resin composition comprising:

(a) a vinyl chloride resin;

(b) a diester plasticizer formed from a compound represented by formula (1) shown below

2. The vinyl chloride resin composition of claim 1, wherein

an amount of (b) the diester plasticizer is from 5 parts by mass to 200 parts by mass relative to 100 parts by mass of (a) the vinyl chloride resin.

3. The vinyl chloride resin composition of claim 1, wherein

a total amount of (b) the diester plasticizer and (c) the trimellitate plasticizer is from 5 parts by mass to 200 parts by mass relative to 100 parts by mass of (a) the vinyl chloride resin.

4. The vinyl chloride resin composition of claim 1, wherein

R¹ and R³ in formula (1) are monovalent aliphatic hydrocarbon groups having a carbon number of at least 4 and no greater than 9 that may be the same or different, and

R² in formula (1) is a divalent aliphatic hydrocarbon group having a carbon number of at least 6 and no greater than 14.

5. The vinyl chloride resin composition of claim 1, wherein

R¹ and R³ in formula (1) each have a straight chain ratio of at least 90 mol %, where the straight chain ratios of R¹ and R³ are proportions of straight chain hydrocarbon groups relative to all hydrocarbon groups in R¹ and R³, respectively.

6. The vinyl chloride resin composition of claim 1 used in powder molding.

7. The vinyl chloride resin composition of claim 1 used in powder slush molding.

8. A vinyl chloride resin molded product obtained through powder molding of the vinyl chloride resin composition of claim 1, wherein the vinyl chloride resin molded product is used as a surface skin of an automobile instrument panel.

9. A laminate comprising:

a foamed polyurethane molded product; and

a vinyl chloride resin molded product obtained through powder molding of the vinyl chloride resin composition of claim 1.