Thermoplastic propylene resin composition

• US 5,312,867 A
• Filed: 07/27/1992
• Issued: 05/17/1994
• Est. Priority Date: 08/17/1988
• Status: Expired due to Fees

• Current Assignee: Sumitomo Chemical Company Limited
• Original Assignee: Sumitomo Chemical Company Limited
• Inventors: Yamamoto, Masashi, Fujii, Takeshi, Mitsui, Kiyoshi, Yamaguchi, Kentaro, Mitsuno, Tatsuyuki
• Primary Examiner(s): JAGANNATHAN, VASUDEVAN SALEM
• Application Number:
  US07/918,780
• Time in Patent Office: 659 Days
• Field of Search: 525/65, 525/66, 525/69, 525/71, 525/98, 525/179, 525/182, 525/183, 524/504, 524/505
• US Class Current: 525/66
• CPC Class Codes: C08L 2205/02 containing two or more polymers of the same C08L -group
• CPC Class Codes: C08L 2205/03 containing three or more polymers in a blend
• CPC Class Codes: C08L 2205/035 containing four or more polymers in a blend
• CPC Class Codes: C08L 23/0853 Vinylacetate
• CPC Class Codes: C08L 23/0869 Acids or derivatives thereof
• CPC Class Codes: C08L 23/0884 Epoxide containing esters
• CPC Class Codes: C08L 23/10 Homopolymers or copolymers of propene
• CPC Class Codes: C08L 23/12 Polypropene
• CPC Class Codes: C08L 23/16 Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 2666/06 Homopolymers or copolymers of unsaturated hydrocarbons; Derivatives thereof
• CPC Class Codes: C08L 2666/20 Macromolecular compounds having nitrogen in the main chain according to C08L75/00 - C08L79/00; Derivatives thereof
• CPC Class Codes: C08L 2666/24 Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof
• CPC Class Codes: C08L 51/04 grafted on to rubbers
• CPC Class Codes: C08L 51/06 grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• CPC Class Codes: C08L 53/00 Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 77/00 Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08; Compositions of derivatives of such polymers

Abstract

A thermoplastic propylene resin composition of the present invention is obtained by blending a polyamide resin (F), an epoxy group containing copolymer (G) with a graft resin composition (J) obtained by graft copolymerizing an unsaturated carboxylic acid or a derivative thereof onto a mixture of polypropylene (C) and a rubber-like material (H) wherein the content of the polyamide resin (F) in the thermoplastic propylene composition is less than 60% by weight.

These thermoplastic propylene resin compositions can easily be processed into molded products, films or sheets by injection molding, extrusion molding or the like, giving products which have a good balance in various physical properties and a uniform and smooth appearance. They are suitable for purposes in which especially high heat resistance, impact resistance and low-temperature impact resistance are required.

Claims

1. A thermoplastic propylene resin composition comprisingto 50% by weight of a polyamide resin (F), and

1 to 5% by weight of an epoxy group containing copolymer (G),

the remainder being a graft resin composition (J) obtained by graft copolymerizing maleic anhydride onto a mixture of 1 to 99% by weight of a polypropylene (C) and 99 to 1% by weight of a rubber material (H) selected from the group consisting of ethylenic copolymer rubbers, propylene-butene rubber, isoprene-butylene rubber, polyisoprenes, polybutadienes, styrene block copolymers, linear low-density polyethylenes and the blends thereof.

the composition totaling 100% by weight.

2. A thermoplastic propylene resin composition according to claim 1, which further comprises a filler (L) in an amount of 0.01 to 300 parts by weight per 100 parts by weight of the thermoplastic propylene resin composition.

3. A thermoplastic propylene resin composition according to claim 2, wherein the unsaturated carboxylic acid or derivatives thereof grafted in the graft resin composition (J) is maleic anhydride.

4. A thermoplastic propylene resin composition according to claim 2, wherein the polyamide resin (F) is a poly-ε

-caprolactam or a polyhexamethylene adipamide.

5. A thermoplastic propylene resin composition according to claim 2, wherein the epoxy group containing copolymer (G) is a copolymer of an unsaturated epoxy compound and ethylene, or a terpolymer of an unsaturated epoxy compound, ethylene and either vinyl acetate or methyl acrylate.

6. A thermoplastic propylene resin composition according to claim 2, wherein the rubber material (H) is an ethylenic copolymer rubber selected from the group consisting of ethylene-propylene copolymer rubbers, ethylene-propylene-nonconjugated diene copolymer rubbers, ethylene-vinyl acetate copolymers, ethylene-methyl acrylate copolymers, ethylene-methyl methacrylate copolymers, ethylene-ethyl acrylate copolymers, ethylene-ethyl methacrylate copolymers, ethylene-butyl acrylate copolymers, ethylene-butyl methacrylate copolymers, ethylene-acrylic acid copolymers, copolymers of ethylene and a partial metal salt of acrylic acid, ethylene-methacrylic acid copolymers, copolymers of ethylene and a partial metal salt of methacrylic acid, ethylene-acrylic acid-acrylic ester copolymers, ethylene-methacrylic acid-acrylic ester copolymers, ethylene-acrylic acid-methacrylic ester copolymers, ethylene-methacrylic acid-methacrylic ester copolymers, ethylene-vinyl alcohol copolymers, ethylene-vinyl acetate-vinyl alcohol copolymers and ethylene-styrene copolymers.

7. A thermoplastic propylene resin composition according to claim 2, wherein the filler (L) is at least one member selected from the group consisting of fibers such as glass fiber, carbon fiber, etc., and inorganic fillers such as talc, mica, etc.

8. A thermoplastic propylene resin composition according to claim 1, wherein the unsaturated carboxylic acid or derivative thereof grafted in the graft resin composition (J) is maleic anhydride.

9. A thermoplastic propylene resin composition according to claim 1, wherein the polyamide resin (F) is a poly-ε

-caprolactam or a polyhexamethylene adipamide.

10. A thermoplastic propylene resin composition according to claim 1, wherein the epoxy group containing copolymer (G) is a copolymer of an unsaturated epoxy compound and ethylene, or a terpolymer of an unsaturated epoxy compound, ethylene and either vinyl acetate or methyl acrylate.

11. A thermoplastic propylene resin composition according to claim 1, wherein the rubber material (H) is an ethylenic copolymer rubber selected from the group consisting of ethylene-propylene copolymer rubbers, ethylene-propylene-nonconjugated diene copolymer rubbers, ethylene-vinyl acetate copolymers, ethylene-methyl acrylate copolymers, ethylene-methyl methacrylate copolymers, ethylene-ethyl acrylate copolymers, ethylene-ethyl methacrylate copolymers, ethylene-butyl acrylate copolymers, ethylene-butyl methacrylate copolymers, ethylene-acrylic acid copolymers, copolymers of ethylene and a partial metal salt of acrylic acid, ethylene-methacrylic acid copolymers, copolymers of ethylene and a partial metal salt of methacrylic acid, ethylene-acrylic acid-acrylic ester copolymers, ethylene-methacrylic acid-acrylic ester copolymers, ethylene-acrylic acid-methacrylic ester copolymers, ethylene-methacrylic acid-methacrylic ester copolymers, ethylene-vinyl alcohol copolymers, ethylene-vinyl acetate-vinyl alcohol copolymers and ethylene-styrene copolymers.