Patent EP0070001A1 successfully refreshed from Google Patents.
EP0070001A1
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Polyamide blends
Assignee: EIDP Inc
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Filing: 1982-07-09
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Granted: —
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Expires: 2002-07-09
Abstract
Abstract Particular amorphous thermoplastic polyamide copolymers can be combined with semicrystalline thermoplastic polyamides to produce molding resins having a wide variety of applications depending on the relative amounts of the amorphous copolymer and the crystallizable polyamide present.
Inventors
- 👤 Bennet Noah Epstein
- 👤 Rolando Umali Pagilagan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 18:03
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
175 words
A thermoplastic molding resin comprising a) about 5 to 98 percent by weight of a thermoplastic semicrystalline polyamide of film-forming molecular weight, and complementally, b) about 95 to 2 percent by weight of a thermoplastic amorphous copolyamide consisting essentially of i) 40-98 mole percent units of isophthalic acid based on total acids present, ii) 2-60 mole percent units of terephthalic acid based on total acids present, iii) 50-98 mole percent units of hexamethylene diamine based on total amines present; and iv) 2-50 mole percent units, based on total amines present, of at least one aliphatic diamine containing between 8 and 20 carbon atoms and containing at least one cyclohexane nucleus, wherein in the amorphous copolyamide the mole percent phthalic acids present totals 100 percent and the mole percent diamines present totals 100 percent, and wherein up to 40 percent of the amorphous copolyamide may consist of units of a lactam, or an W-aminoacid of 4-12 carbon atoms, or units derived from a 4-12 carbon atom aliphatic dicarboxylic acid and a 2-12 carbon atom aliphatic diamine.
Claim 2
Dependent Claim
175 words
A thermoplastic molding resin comprising a) about 5 to 98 percent by weight of a thermoplastic semicrystalline polyamide of film-forming molecular weight, and complementally, b) about 95 to 2 percent by weight of a thermoplastic amorphous copolyamide consisting essentially of i) 40-98 mole percent units of isophthalic acid based on total acids present, ii) 2-60 mole percent units of terephthalic acid based on total acids present, iii) 50-98 mole percent units of hexamethylene diamine based on total amines present; and iv) 2-50 mole percent units, based on total amines present, of at least one aliphatic diamine containing between 8 and 20 carbon atoms and containing at least one cyclohexane nucleus, wherein in the amorphous copolyamide the mole percent phthalic acids present totals 100 percent and the mole percent diamines present totals 100 percent, and wherein up to 40 percent of the amorphous copolyamide may consist of units of a lactam, or an W-aminoacid of 4-12 carbon atoms, or units derived from a 4-12 carbon atom aliphatic dicarboxylic acid and a 2-12 carbon atom aliphatic diamine.
Claim 3
Dependent Claim
42 words
A blend described as in Claim 1 in which the amount of semicrystalline polyamide present is between about 5 and 40 percent by weight.and the amorphous copolyamide is complementally present in an amount of between about 95 and 60 percent by weight.
Claim 4
Dependent Claim
43 words
A blend described as in Claim 1 in which the amount of semicrystalline polyamide present is between about 40 and 98 percent by weight and the amorphous copolyamide is complementally present in an amount of between about 60 and 2 percent by weight.
Claim 5
Dependent Claim
106 words
A blend of Claim 1, 2 or 3 wherein the thermoplastic amorphous copolyamide consists . essentially of i) 40-98 mole percent units of isophthalic acid based on total acids present, ii) 2-60 mole percent units of terephthalic acid based on total acids present, iii) 50-98 mole percent units of hexamethylene diamine based on total amines present; and iv) 2-50 mole percent units, based on total amines present, of at least one aliphatic diamine containing between 8 and 20 carbon atoms and containing at least one cyclohexane nucleus, wherein the mole percent phthalic acids present totals 100 percent and the mole percent diamines present totals 100 percent.
Claim 6
Dependent Claim
58 words
A blend of claim 1, 2 or 3 wherein the thermoplastic amorphous copolyamide consists essentially of (i) 60-80 mole percent isophthalic acid ` (ii) 20-40 mole percent terephthalic acid (iii) 94-98 mole percent hexamethylenediamine (iv) 2-6 mole percent bis(p-aminocyclohexyl)-methane wherein the mole percent phthalic acids present totals 100 percent and the mole percent diamines present totals 100 percent.
Claim 7
Dependent Claim
14 words
A blend of Claim 1, 2 or 3 which additionally contains a reinforcing agent.
Claim 8
Dependent Claim
12 words
A blend of Claim 6 wherein the reinforcing agent is glass fiber.
Claim 9
Dependent Claim
11 words
A blend of Claim 4 which additionally contains a reinforcing agent.
Claim 10
Dependent Claim
13 words
A blend of Claim 8 in which the reinforcing agent is glass fiber.
Claim 11
Dependent Claim
11 words
A blend of Claim 5 which additionally contains a reinforcing agent.
Claim 12
Dependent Claim
13 words
A blend of Claim 10 in which the reinforcing agent is glass fiber.
Claim 13
Dependent Claim
12 words
An article molded from the blend of Claim 1, 2 or 3.
Claim 14
Dependent Claim
9 words
An article molded from the blend of Claim 4.
Claim 15
Dependent Claim
9 words
An article molded from the blend of Claim 5.
References Cited (Backward Citations)
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