EP0219973A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Impact resistant polyamide compositions
Assignee: Asahi Kasei Corp
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Filing: 1986-09-16
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Granted: —
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Expires: 2006-09-16
Abstract
Abstract The composition of this invention, which com- prises polyamide incorporated with at least one poly- ner selected from the group consisting of hydrogenated block copolymer and ethylene-containing polymer, and with a specified modified block copolymer each in a specified ratio and amount, is a molding material which shows excellent impact resistance and at the same time good balance of properties among stiffness, heat resistance and weld zone strength and further shows good moldability and axcellent appearance of molded articles and which can be used in a wide field of application including automobile parts, electric appliance parts and electronic parts.
Inventors
- 👤 Kazuaki Saito
- 👤 Yoshifumi Nishimura
- 👤 Shinichi Izawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 01:42
CPC Classifications
C; C08; C08L; C08L77/00; Y; Y10; Y10S; Y10S525/00; Y10S525/94
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
200 words
(1) A polyamide composition which comprises, based on the combined amounts of components - (a), (b) and (c), (a) 60 to 90% by weight of polyamide, (b) 2 to 36% by weight of at least one polymer selected from the group consisting of (i) a hydrogenated block copolymer comprising a vinyl aromatic polymer block A and an olefin polymer block B, the degree of unsaturation of said block B not exceeding 20%; and (ii) an ethylene-containing polymer, and (c) 2 to 36% by weight of a modified block copolymer formed by bonding a molecular unit containing a carboxylic acid group or its derivative group to said block copolymer, the amount of said molecular unit containing a carboxylic acid group or its derivative group bonded to the modified block copolymer of (c), expressed in terms of x parts by weight per 100 parts by weight of the block copolymer before modification, and the compounding ratio of said modified block copolymer of (c) to the sum of the weight of the modified block copolymer of (c) and the weight of the at least one polymer of (b), expressed in terms of y, being within the range specified by the expression , and
Claim 2
Dependent Claim
20 words
(2) A polyamide composition according to claim 1 wherein the amount of said polyamide is 65 to 85% by weight.
Claim 3
Dependent Claim
17 words
(3) A polyamide composition according to claim 1 wherein said polyamide is nylon 6 or nylon 66.
Claim 4
Dependent Claim
36 words
(4) A polyamide composition according to claim 1 wherein the amount of said at least one polymer selected from the group consisting of said hydrogenated block copolymer and ethylene-containing polymer is 3 to 30% by weight.
Claim 5
Dependent Claim
15 words
(5) A polyamide composition according to claim 1 wherein the ethylene-containing polymer is ethylene-a-olefin copolymer.
Claim 6
Dependent Claim
22 words
(6) A polyamide composition according to claim 1 wherein the amount of said modified block polymer is 3 to 30% by weight.
Claim 7
Dependent Claim
21 words
(7) A polyamide composition according to claim 1 wherein the carboxylic acid group or its derivative group originates from maleic anhydride.
Claim 8
Dependent Claim
36 words
(8) A polyamide composition according to claim 1 wherein the modification amount of said modified block copolymer is 0.15 to 1.8 parts by weight per 100 parts by weight of the hydrogenated block copolymer before modification.
Claim 9
Dependent Claim
22 words
(9) A polyamide composition according to claim 1 wherein the compounding ratio y of said modified block copolymer is 0.15 to 0.85.
Claim 10
Dependent Claim
40 words
(10) A polyamide composition according to claim 1 wherein the relation between the compounding ratio y of said modified block polymer and the modification amount x of the same polymer is expressed by the expression y a -x + 0.6.
References Cited (Backward Citations)
No citation records indexed.
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