Thermoplastic resin composition

• US 5,132,363 A
• Filed: 02/15/1989
• Issued: 07/21/1992
• Est. Priority Date: 02/15/1988
• Status: Expired due to Term

• Current Assignee: Sumitomo Chemical Company Limited
• Original Assignee: Sumitomo Chemical Company Limited
• Inventors: Maruyama, Takashi, Wakamatsu, Kazuki, Tsuji, Mitsuji, Furuta, Motonobu
• Primary Examiner(s): Ziegler, Jacob
• Application Number:
  US07/311,898
• Time in Patent Office: 1,252 Days
• Field of Search: 525/68, 525/92, 525/905, 525/152
• US Class Current: 525/68
• CPC Class Codes: C08L 23/12 Polypropene
• 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 2666/18 Polyesters or polycarbonates according to C08L67/00 - C08L69/00; Derivatives thereof
• CPC Class Codes: C08L 2666/22 Macromolecular compounds not provided for in C08L2666/16 - C08L2666/20
• 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 61/06 of aldehydes with phenols
• CPC Class Codes: C08L 63/00 Compositions of epoxy resins; Compositions of derivatives of epoxy resins
• CPC Class Codes: C08L 67/00 Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain of polyester-amides C08L77/12; of polyester-imides C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• CPC Class Codes: C08L 71/123 not modified by chemical after-treatment
• 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
• CPC Class Codes: C08L 79/08 Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: C08L 81/02 Polythioethers; Polythioether-ethers
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: Y10S 525/905 Polyphenylene oxide

Abstract

Disclosed are thermoplastic resin compositions, comprising:

(a) a polyphenylene ether resin or a resin composition containing a polyphenylene ether,

(b) a modified propylene polymer, or a propylene based resin composition containing the modified propylene polymer and/or a propylene polymer, and

(c) optionally, a rubbery substance, wherein the proportion of the component (a) to the sum of the components (a) and (b) is 1 to 90% by weight, and that of the component (b) to the sum of the components (a) and (b) is 99 to 10% by weight, and when the component (c) is present, the proportion of the component (c) to the sum of the components (a) and (b) is 1 to 50 parts by weight per 100 parts by weight of (a) plus (b).

Claims

1. A thermoplastic resin composition consisting essentially of:

(a) a polyphenylene ether,

(b) an alkenyl aromatic monomer-grafted propylene polymer, and

(c) a rubbery substance.

2. A thermoplastic resin composition as claimed in claim 1, wherein said rubbery substance (c) is at least one selected from the group consisting of ethylene-α

-olefin copolymer rubber, modified products of ethylene-α

-olefin copolymer rubber, ethylene-α

-olefin-nonconjugated diene copolymer rubber, modified products of ethylene-α

-olefin-nonconjugated diene copolymer rubber, styrene-butadiene random copolymer rubber, styrene-butadiene-styrene block copolymer rubber, hydrogenated styrene-butadiene block copolymer rubber and hydrogenated styrene-butadiene-styrene block copolymer rubber.

3. A thermoplastic resin composition as claimed in claim 2, wherein said rubbery substance (c) is said ethylene-α

-olefin copolymer rubber which is an ethylene-propylene copolymer rubber which has an ethylene content of 15 to 85% by weight, a Mooney viscosity (ML₁₊₄ 121°

C.) of 5 to 120, and a glass transient point of not higher than -10°

C.

4. A thermoplastic resin composition as claimed in claim 1, wherein said polyphenylene ether (a) is a polyphenylene ether obtained by the oxidative coupling polymerization of at least one phenol compound represented by the general formula ##STR8## wherein R₁, R₂, R₃, R₄ and R₅, each represents a hydrogen atom, a halogen atom, a hydrocarbyl group or a substituted hydrocarbyl group, a hydrocarbyloxy group or a substituted hydrocarbyloxy group provided that one of R₁, R₂, R₃, R₄ and R₅ is always a hydrogen atom.

5. A thermoplastic resin composition as claimed in claim 1, wherein said component (c) is an alkenyl aromatic monomer-grafted rubbery substance.

6. A thermoplastic resin composition as claimed in claim 1, wherein said alkenyl aromatic monomer-grafted propylene polymer is obtained by grafting an alkenyl aromatic monomer onto a highly crystalline propylene homopolymer or block copolymer of propylene having a boiling heptane-insoluble portion, which has an isotactic pentad fraction of at least 0.970.

7. A thermoplastic composition as claimed in claim 6, wherein said propylene homopolymer or said block copolymer has a boiling heptane-soluble portion content of not higher than 5.0% by weight and a xylene-soluble portion content of not higher than 2.0% by weight at 20°

C.

8. A thermoplastic resin composition consisting essentially of:

(a) a polyphenylene ether,

(b) an alkenyl aromatic monomer-grafted propylene polymer, and

(c) a rubbery substance;

wherein the proportion of the component (a) to the sum of component (a) and (b) is 1 to 90% by weight, the proportion of component (b) to the sum of components (a) and (b) is 99 to 10% by weight, and the proportion of component (c) to the sum of components (a) and (b) is 1 to 50 parts by weight per 100 parts by weight of (a) plus (b).

9. A thermoplastic resin composition as claimed in claim 8,

wherein said component (a) is a polyphenylene ether obtained by the oxidative coupling polymerization of at least one phenol compound represented by the general formula ##STR9## wherein R₁, R₂, R₃, R₄ and R₅ each represents a hydrogen atom, a halogen atom, a hydrocarbyl group, a substituted hydrocarbyl group, a hydroxycarbyloxy group or a substituted hydrocarbyloxy group provided that one of R₁, R₂, R₃, R₄ and R₅ is always a hydrogen atom;

wherein the alkenyl aromatic monomer of component (b) is a monomer represented by the general formula ##STR10## wherein R₆, R₇, R₈, R₉ and R₁₀ each represent a hydrogen atom, a halogen atom, an unsubstituted or substituted hydrocarbyl group, or an unsubstituted or substituted hydrocarbyloxy group, and R₁₁ represents a hydrogen atom, or a lower alkyl group having 1 to 4 carbon atoms; and

wherein said component (c) is at least one member selected from the group consisting of ethylene-α

-olefin copolymer rubber, modified products of ethylene-α

-olefin copolymer rubber, ethylene-α

-olefin-nonconjugated diene copolymer rubber, modified products of ethylene-α

-olefin-nonconjugated diene copolymer rubber, styrene-butadiene random copolymer rubber, styrene-butadiene-styrene block copolymer rubber, hydrogenated styrene-butadiene block copolymer rubber and hydrogenated styrene-butadiene-styrene block copolymer rubber.

10. A thermoplastic resin composition as claimed in claim 9, wherein said phenol compound of said component (a) is selected from the group consisting of phenol, o-cresol, m-cresol, p-cresol, 2,6-dimethylphenol, 2,5-dimethylphenol, 2,4-dimethylphenol, 3,5-dimethylphenol, 2-methyl-6-phenylphenol, 2,6-diphenylphenol, 2,6-diethylphenol, 2-methyl-6-ethylphenol, 2,3,5-trimethylphenol, 2,3,6-trimethylphenol, 2,4,6-trimethylphenol, 3-methyl-6-tert-butylphenol, thymol, and 2-methyl-6-allylphenol.

11. A thermoplastic resin composition as claimed in claim 9, wherein said component (a) is selected from the group consisting of homopolymers of 2,6-dimethylphenol, homopolymers of 2,6-diphenylphenol, copolymers of 2,6-dimethylphenol and 3-methyl-6-tert-butylphenol, and copolymers of 2,6-dimethylphenol and 2,3,6-trimethylphenol.

12. A thermoplastic resin composition as claimed in claim 8, wherein said component (c) is an alkenyl aromatic monomer-grafted rubbery substance.

13. A thermoplastic resin composition as claimed in claim 8, wherein said alkenyl aromatic monomer-grafted propylene polymer is obtained by grafting an alkenyl aromatic monomer onto a highly crystalline propylene homopolymer or block copolymer of propylene having a boiling heptane-insoluble portion, which has an isotactic pentad fraction of at least 0.970.