EP0269748A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polyphase structure and process for its production
Assignee: Toray Industries Inc
•
Filing: 1987-05-18
•
Granted: —
•
Expires: 2007-05-18
Abstract
Abstract The polyphase structure is prepared by kneeding: (A) 30 to 60 wt % of aliphatic polyamide; (B) 35 to 55 wt % of polyphenylene ether; and (c) 5 to 20 wt % of A-B-A' type diene block copolymer (wherein A and A' each represents the same or different polymerized vinylaromatic hydrocarbon block, and B represents polymerized conjugated diene block), with (A) + (8) + (C) of 100 wt %, and the aliphatic polyamide (A) forming a matrix phase, the polyphenylene ether (B) forming a primary dispersed phase in the matrix phase, and the diene block copolymer (C) forming a secondary dispersed phase in the primary dispersed phase. This polyphase structure gives moldings excellent in impact resistance, rigidity, and heat resistance, and can be used as automobile parts, mechanical parts, and electric and electronic components.
Inventors
- 👤 Kazumasa Chiba
- 👤 Akihiko Kishimoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 00:16
CPC Classifications
C; C08; C08L; C08L77/00; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
121 words
A multi-phase resinous structure, comprising (A) 30 to 60 wt % of an aliphatic polyamide, (B) 35 to 55 wt % of a polyphenylene ether, and (C) 5 to 20 wt % of an A-B-A' type diene block copolymer (where A and A' stand for polymerized vinyl aromatic hydrocarbon blocks of the same or different kinds, and B stands for a conjugated diene block), kneaded to make (A) + (B) + (C) = 100 wt %, with matrix phase formed by the (A) aliphatic polyamide, primary dispersed phase formed by the (B) polyphenylene ether, to be dispersed in the matrix phase, and secondary dispersed phase formed by the (C) diene block copolymer, to be dispersed further in the primary dispersed phase.
Claim 2
Dependent Claim
121 words
A multi-phase resinous structure, comprising (A) 30 to 60 wt % of an aliphatic polyamide, (B) 35 to 55 wt % of a polyphenylene ether, and (C) 5 to 20 wt % of an A-B-A' type diene block copolymer (where A and A' stand for polymerized vinyl aromatic hydrocarbon blocks of the same or different kinds, and B stands for a conjugated diene block), kneaded to make (A) + (B) + (C) = 100 wt %, with matrix phase formed by the (A) aliphatic polyamide, primary dispersed phase formed by the (B) polyphenylene ether, to be dispersed in the matrix phase, and secondary dispersed phase formed by the (C) diene block copolymer, to be dispersed further in the primary dispersed phase.
Claim 3
Dependent Claim
49 words
A multi-phase resinous structure according to claim 1, wherein the melt viscosity µA of the (A) aliphatic polyamide and the melt viscosity µB of the (B) polyphenylene ether satisfy the following formulae: 50 poise ≦ µA ≦ 50,000 poise 5,000 poise ≦ µB ≦ 500,000 poise µA < µB
Claim 4
Dependent Claim
30 words
A multi-phase resinous structure according to claim 2, wherein pA and µB satisfy the following formulae: 100 poise ≦ µA ≦ 45,000 poise 6,000 poise ≦ µH ≦ 400,000 poise
Claim 5
Dependent Claim
30 words
A multi-phase resinous structure according to claim 2, wherein µA and µB satisfy the following formulae: 200 poise ≦ µA ≦ 40,000 poise 7,000 poise ≦ µB ≦ 300,000 poise
Claim 6
Dependent Claim
45 words
A multi-phase resinous structure according to claim 1, wherein the (A) aliphatic polyamide is at least one selected from polycaproamide (nylon 6), polyhexamethylene adipamide (nylon 66), polyhexamethylene sebacamide (nylon 610), polyhexamethylene dodecamide (nylon 612), polyundecanamide (nylon 11), polydodecanamide (nylon 12), their copolyamides and mixed polyamides.
Claim 7
Dependent Claim
19 words
A multi-phase resinous structure according to claim 5, wherein the aliphatic polyamide is nylon 6 and /or nylon 66.
Claim 8
Dependent Claim
70 words
A multi-phase resinous structure according to claim 1, wherein the (B) polyphenylene ether is at least one polymer, copolymers and modified (co)polymers selected from the polymers of monocyclic phenols represented by the following general formula: (where R 1 stands for an alkyl group with 1 to 3 carbon atoms, and R 2 and R 3 stand for the hydrogen atom or alkyl group with 1 to 3 carbon atoms respectively)
Claim 9
Dependent Claim
38 words
A multi-phase resinous structure according to claim 7, wherein the (B) polyphenylene ether is at least one selected from poly(2,6-dimethyl-l,4-phenylene) ether, poly(2,6-diethyl-l,4-phenylene) ether, poly-(2,6-dipropyl-l,4-phenylene) ether, poly(2-methyl-6-propyl-1,4-phenylene) ether, poly(2-ethyl-6-propyl-1,4-phenylene) ether, 2,6-dimethylphenol/2,3,6 - trimethylphenol copolymer, 2,6-diethylphenol/2,3,6-trimethylphenol copolymer, and 2,6-dipropylphenol/2,3,6-trimethylphenol copolymer.
Claim 10
Dependent Claim
19 words
A multi-phase resinous structure according to claim 7, wherein the (B) polyphenylene ether is poly(2,6-dimethyl-1,4-phenylene) ether and/or poly(2,6-dimethylphenol/2,3,6-trimethylphenol copolymer.
Claim 11
Dependent Claim
28 words
A multi-phase resinous structure according to claim 7, wherein the modified (co)polymer of a polyphenylene ether is obtained by letting an α,β-unsaturated compound react with a polyphenylene ether.
Claim 12
Dependent Claim
50 words
A multi-phase resinous structure according to claim 10, wherein the α,β-unsaturated compound is at least one selected from maleic anhydride, itaconic anhydride, glutaconic anhydride, citraconic anhydride, acrylic acid, metha- crylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, methylmaleic acid, methylfumaric acid, citraconic acid, methyl hydrogenmaleate and methyl hydrogenitaconate.
Claim 13
Dependent Claim
30 words
A multi-phase resinous structure according to claim 10, wherein the amount of the a,s-unsaturated compound used is 0.1 to 10 wt % based on the weight of the polyphenylene ether.
Claim 14
Dependent Claim
34 words
A multi-phase resinous structure according to claim 10, wherein the modified polyphenylene ether (co) polymer is obtained by letting an α,β-unsaturated compound react with a polyphenylene ether in the presence of a radical initiator.
Claim 15
Dependent Claim
35 words
A multi-phase resinous structure according to claim 13, wherein the radical initiator is at least one selected from benzoyl peroxide, dicumyl peroxide, di-t-butyl peroxide, t-butyl hydroperoxide, cumene hydroperoxide, dimethyl-di-(t-buthylperoxy)hexane, dimethyl-di-(t-butylperoxy)hexyne, azobisisobutyronitrile, azobis(cyclohexanecarbonitrile), and azobis (dimethylvaleronitrile).
Claim 16
Dependent Claim
34 words
A multi-phase resinous structure according to claim 1, wherein the A and A' of the (C) A-B-A' type diene block copolymer stand for polystyrene based blocks, and B stands for a polybutadiene based block.
Claim 17
Dependent Claim
33 words
A multi-phase resinous structure according to claim 1, wherein the A and A' of the (C) A-B-A' type diene block copolymer are polystyrene based blocks, and B stands for a polyisoprene based block.
Claim 18
Dependent Claim
28 words
A multi-phase resinous structure according to claim 1, wherein the amount of the diene component in the A-B-A' type diene block copolymer is 50 to 95 wt %.
Claim 19
Dependent Claim
41 words
A multi-phase resinous structure according to claim 1, which consists of 35 to 55 wt % of an aliphatic polyamide, 38 to 52 wt % of a polyphenylene ether and 7 to 17 wt % of an A-B-A' diene block copolymer.
Claim 20
Dependent Claim
42 words
A multi-phase resinous structure according to claim l, which consists of 40 to 50 wt % of an aliphatic polyamide, 4Q to 50 wt % of a polyphenylene ether and 10 to 15 wt % of an A-B-A' type diene block copolymer.
Claim 21
Dependent Claim
33 words
A multi-phase resinous structure according to claim 1, wherein the maximum particle size of the primary dispersed phase formed by a polyphenylene ether is in a range from about 0.5 to 30 µ.
Claim 22
Dependent Claim
34 words
A multi-phase resinous structure according to claim 1, wherein the maximum particle size of the primary dispersed phase formed by a polyphenylene ether is in a range from about 1 to 20 P .
Claim 23
Dependent Claim
146 words
A process for preparing a multi-phase resinous structure with matrix phase formed by (A) an aliphatic polyamide, primary dispersed phase dispersed in the matrix, formed by (B) a polyphenylene ether and secondary dispersed phase dispersed further in the primary dispersed phase, formed by (C) a diene block copolymer, comprising the step of melting and kneading (A) 30 to 60 wt % of an aliphatic polyamide, (B) 35 to 55 wt % of a polyphenylene ether, and (C) 5 to 20 wt % of an A-B-A' type diene block copolymer (where A and A' stand for polymerized vinyl aromatic hydrocarbon blocks of the same or different kinds, and B stands for a polymerized conjugated diene block), to make (A) + (B) +(C) = 100 wt %, at a shear rate of 100 sec -1 or more and at a temperature of 270 to 340°C, using an extruder.
Claim 24
Dependent Claim
146 words
A process for preparing a multi-phase resinous structure with matrix phase formed by (A) an aliphatic polyamide, primary dispersed phase dispersed in the matrix, formed by (B) a polyphenylene ether and secondary dispersed phase dispersed further in the primary dispersed phase, formed by (C) a diene block copolymer, comprising the step of melting and kneading (A) 30 to 60 wt % of an aliphatic polyamide, (B) 35 to 55 wt % of a polyphenylene ether, and (C) 5 to 20 wt % of an A-B-A' type diene block copolymer (where A and A' stand for polymerized vinyl aromatic hydrocarbon blocks of the same or different kinds, and B stands for a polymerized conjugated diene block), to make (A) + (B) +(C) = 100 wt %, at a shear rate of 100 sec -1 or more and at a temperature of 270 to 340°C, using an extruder.
Claim 25
Dependent Claim
29 words
A process for preparing a multi-phase resinous structure according to claim 22, wherein the melting and kneading is executed at a shear rate of 300 sec -1 or more.
Claim 26
Dependent Claim
29 words
A process for preparing a multi-phase resinous structure according to claim 22, wherein the melting and kneading is executed at a shear rate of 500 sec -1 or more.
Claim 27
Dependent Claim
27 words
A process for preparing a multi-phase resinous structure according to claim 22, wherein the melting and kneading is executed using a multiple screw extruder with engaged screws.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.