EP0404346A1
Expired / Lapsed
EP
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Polyamide, polyglutarimide and impact modifier blends
Assignee: Rohm and Haas Co
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Filing: 1990-05-21
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Granted: —
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Expires: 2010-05-21
Abstract
Abstract Blends of aliphatic polyamides, polyglutarimides containing residual acid and/or anhydride groups, and certain core/shell impact modifiers are disclosed, exhibiting after thermally compounding an improved balance of impact strength, modulus, and heat distortion temperature. With certain functionalized impact modifiers, the reacted blends are particularly suitable for melt-forming operations, such as blow-molding.
Inventors
- 👤 William Thayer Freed
- 👤 Susan Marie Liwak
- 👤 Louis C. Sederel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 12:52
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
51 words
A blend of polyamide, polyglutarimide, and impact modifier characterised in that: (a) the polyamide comprises aliphatic polyamide; (b)the polyglutarimide contains residual acid and anhydride groups; (c) the impact modifier comprises core/shell polymer wherein the core is a polymer comprising at least 50 percent by weight of butadiene and/or alkyl acrylate units.
Claim 2
Dependent Claim
51 words
A blend of polyamide, polyglutarimide, and impact modifier characterised in that: (a) the polyamide comprises aliphatic polyamide; (b)the polyglutarimide contains residual acid and anhydride groups; (c) the impact modifier comprises core/shell polymer wherein the core is a polymer comprising at least 50 percent by weight of butadiene and/or alkyl acrylate units.
Claim 3
Dependent Claim
24 words
A blend as claimed in Claim 1, wherein the core contains more than 50% by weight of mers of alkyl acrylate, preferably n -butylacrylate.
Claim 4
Dependent Claim
25 words
A blend as claimed in Claim 1 or 2, wherein the core contains from 0.05 to five percent by weight of mers of polyunsaturated monomer.
Claim 5
Dependent Claim
29 words
A blend as claimed in any preceding Claim wherein the shell polymer contains more than 50% by weight of mers of vinyl aromatic monomer and/or alkyl or cycloalkyl methacrylate.
Claim 6
Dependent Claim
27 words
A blend as claimed in any preceding Claim wherein the polyglutarimide comprises more than 50% by weight of mers of (N-hydrogen) dimethylglutarimide, (N-alkyl)dimethylglutarimide, preferably (N-methyl)dimethylglutarimide, and/or (N-cycloalkyl)dimethylglutarimide.
Claim 7
Dependent Claim
27 words
A blend as claimed in any preceding Claim wherein the polyglutarimide contains mers of methyl methacrylate, and mers of methacrylic acid, methacrylic anhydride, styrene and/or alkyl acrylate.
Claim 8
Dependent Claim
30 words
A blend as claimed in any preceding Claim wherein the aliphatic polyamide contains more than 50% by weight of mers from caprolactam, omega-aminoundecanoic acid, lauryllactam, hexamethylenediamine adipate and/or hexamethylenediamine sebacate.
Claim 9
Dependent Claim
57 words
A blend as claimed in any preceding Claim containing from 50 to 85 parts of polyamide, from 5 to 25 parts of polyglutarimide and from 10 to 30 parts of impact modifier per 100 parts of the three components, and, optionally, linear copolymer in an amount of 0.01 to 1.5 percent by weight of the four components.
Claim 10
Dependent Claim
82 words
A blend as claimed in any preceding Claim which contains linear copolymer comprising (meth)acrylate ester mers and unsaturated acid or anhydride mers, said linear copolymer preferably containing lower alkyl methacrylate mers (preferably methylmethacrylate) and mers of one or more of the following monomers: acrylic acid, methacrylic acid (preferably), itaconic acid, acryloxypropionic acid, monoalkyl esters of maleic acid, monoalkyl ester of fumaric acid, maleic anhydride; most preferably containing mers of methyl methacrylate and methacrylic acid in a weight ratio of 20:1 to 1:1.
Claim 11
Dependent Claim
30 words
A blend as claimed in any preceding Claim 11 wherein the impact modifier comprises core/shell polymer which contains chemically reactive functional groups, said functional groups preferably being in the shell.
Claim 12
Dependent Claim
38 words
A blend as claimed in Claim 10, wherein the functional groups are in the shell and comprise mers from acrylic acid, methacrylic acid, itaconic acid, acryloxypropionic acid, maleic acid monoalkyl ester, fumaric acid monoalkyl ester, and/or maleic anhydride
Claim 13
Dependent Claim
18 words
A sheet, film, molded or otherwise shaped article prepared from a blend as claimed in any preceding Claim.
References Cited (Backward Citations)
EP0003126A1
Cited
US4415706A
Cited
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