US5510160A
Expired / Lapsed
US
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Thermoplastic multilayer composites
Assignee: Evonik Operations GmbH
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Filing: 1994-01-28
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Granted: 1996-04-23
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Expires: 2014-01-28
Abstract
Abstract The present invention relates to a thermoplastic multilayer composite of polyamide and polyvinylidene fluoride having adhesive bonding layers and improved resistance to chemical agents such as, for example, methanol-containing fuels. The multilayer composite comprises: (I): at least one layer comprising a moulding compound of polyamide, (II): at least one layer adjacent to said layer (I) comprising a moulding compound comprising a mixture of (a) polyvinylidene fluoride, and (b) polyglutarimide, wherein the layers (I) and (II) are adhesively bonded to one another.
Inventors
- 👤 Hans Jadamus
- 👤 Stefan Rober
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:57
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/34; B32B27/06; B32B27/08; B32B1/00; B32B1/08; B32B27/30; B32B27/304; C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/16; F; F16; F16L; F16L9/00; F16L9/12; B32B2307/00; B32B2307/70; B32B2307/718; C08L33/00; C08L33/24; F16L11/00; F16L11/04; F16L2011/047; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1352; Y10T428/139; Y10T428/1393; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31725; Y10T428/31739; Y10T428/31743
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
166 words
A thermoplastic multilayer composite comprising: (I) at least one layer comprising a molding compound of a polyamide, and (II) at least one layer adjacent to said layer (I) comprising a molding compound comprising a mixture of: (a) from 97.5 to 50% by wt. of polyvinylidene fluoride or vinylidene fluoride copolymer, and (b) from 2.5 to 50% by wt. of polyglutarimide comprised of the monomer units: (i) from 14 to 85% by weight of ##STR5## (ii) from 10 to 75% by weight of ##STR6## (iii) from 0 to 15% by weight of ##STR7## (iv) from 7 to 20% by weight of ##STR8## wherein the sum of (i), (ii), (iii) and (iv) of component IIb is 100%, and wherein alkyl is methyl, ethyl, propyl, butyl, or hexyl; and R 1 to R 4 , identical or different, are hydrogen or (C n H 2n+1 ) wherein n is an integer of from 1 to 6, and wherein said layers (I) and (II) are directly bonded to one another.
Claim 2
Dependent Claim
166 words
A thermoplastic multilayer composite comprising: (I) at least one layer comprising a molding compound of a polyamide, and (II) at least one layer adjacent to said layer (I) comprising a molding compound comprising a mixture of: (a) from 97.5 to 50% by wt. of polyvinylidene fluoride or vinylidene fluoride copolymer, and (b) from 2.5 to 50% by wt. of polyglutarimide comprised of the monomer units: (i) from 14 to 85% by weight of ##STR5## (ii) from 10 to 75% by weight of ##STR6## (iii) from 0 to 15% by weight of ##STR7## (iv) from 7 to 20% by weight of ##STR8## wherein the sum of (i), (ii), (iii) and (iv) of component IIb is 100%, and wherein alkyl is methyl, ethyl, propyl, butyl, or hexyl; and R 1 to R 4 , identical or different, are hydrogen or (C n H 2n+1 ) wherein n is an integer of from 1 to 6, and wherein said layers (I) and (II) are directly bonded to one another.
Claim 3
Dependent Claim
40 words
The thermoplastic multilayer composite according to claim 1, wherein said layer (II) comprises a moulding compound comprising a mixture of: (a) from 97.5 to 80% by weight of polyvinylidene fluoride, and (b) from 2.5 to 20% by weight of polyglutarimide.
Claim 4
Dependent Claim
40 words
The thermoplastic multilayer composite according to claim 1, wherein said layer (II) comprises a moulding compound comprising a mixture of: (a) from 96 to 90% by weight of polyvinylidene fluoride, and (b) from 4 to 10% by weight of polyglutarimide.
Claim 5
Dependent Claim
85 words
The thermoplastic multilayer composite according to claim 1, wherein said polyglutarimide comprises: (i) from 30 to 70% by weight of ##STR9## (ii) from 20 to 40% by weight of ##STR10## (iii) from 0 to 15% by weight of ##STR11## (iv) from 8 to 12% by weight of ##STR12## wherein Alkyl is methyl, ethyl, propyl, butyl or hexyl; and R 1 to R 4 , identical or different, are hydrogen or (C n H 2n+1 ) wherein n is an integer of from 1 to 6.
Claim 6
Dependent Claim
19 words
The thermoplastic multilayer composite according to claim 1, wherein said layer (I) is a moulding compound comprising polyamide 12.
Claim 7
Dependent Claim
20 words
The thermoplastic multilayer composite according to claim 1, wheren said alkyl and R 1 to R 4 are each methyl.
Claim 8
Dependent Claim
26 words
The thermoplastic multilayer composite according to claim 1, wherein said polyvinylidene fluoride is electrically conductive and has a surface resistance of less than 10 9 ohm.
Claim 9
Dependent Claim
165 words
A molding comprising a thermoplastic multilayer composite comprising: (I) at least one layer comprising a molding compound of a polyamide, and (II) at least one layer adjacent to said layer (I) comprising a molding compound comprising a mixture of: (a) from 97.5 to 50% by wt. of polyvinylidene fluoride, and (b) from 2.5 to 50% by wt. of polyglutarimide comprised of the monomer units: (i) from 14 to 85% by weight of ##STR13## (ii) from 10 to 75% by weight of ##STR14## (iii) from 0 to 15% by weight of ##STR15## (iv) from 7 to 20% by weight of ##STR16## wherein the sum of (i), (ii), (iii) and (iv) is 100% of component IIb, and wherein alkyl is methyl, ethyl, propyl, butyl, or hexyl; and R 1 to R 4 , identical or different, are hydrogen or (C n H 2n+1 ) wherein n is an integer of from 1 to 6, and wherein said layers (I) and (II) are directly bonded to one another.
Claim 10
Dependent Claim
165 words
A molding comprising a thermoplastic multilayer composite comprising: (I) at least one layer comprising a molding compound of a polyamide, and (II) at least one layer adjacent to said layer (I) comprising a molding compound comprising a mixture of: (a) from 97.5 to 50% by wt. of polyvinylidene fluoride, and (b) from 2.5 to 50% by wt. of polyglutarimide comprised of the monomer units: (i) from 14 to 85% by weight of ##STR13## (ii) from 10 to 75% by weight of ##STR14## (iii) from 0 to 15% by weight of ##STR15## (iv) from 7 to 20% by weight of ##STR16## wherein the sum of (i), (ii), (iii) and (iv) is 100% of component IIb, and wherein alkyl is methyl, ethyl, propyl, butyl, or hexyl; and R 1 to R 4 , identical or different, are hydrogen or (C n H 2n+1 ) wherein n is an integer of from 1 to 6, and wherein said layers (I) and (II) are directly bonded to one another.
Claim 11
Dependent Claim
165 words
A hollow profile comprising a thermoplastic multilayer composite comprising: (I) at least one layer comprising a molding compound of a polyamide, and (II) at least one layer adjacent to said layer (I) comprising a molding compound comprising a mixture of (a) from 97.5 to 50% by wt. of polyvinylidene fluoride, and (b) from 2.5 to 50% by wt. of polyglutarimide comprised of the monomer units: (i) from 14 to 85% by weight of ##STR17## (ii) from 10 to 75% by weight ##STR18## (iii) from 0 to 15% by weight of ##STR19## (iv) from 7 to 20% by weight of ##STR20## wherein the sum of (i), (ii), (iii) and (iv) is 100% of component IIb, and wherein alkyl is methyl, ethyl, propyl, butyl, or hexyl; and R 1 to R 4 , identical or different, are hydrogen or (C n H 2n+1 ) wherein n is an integer of from 1 to 6, and wherein said layers (I) and (II) are directly bonded to one another.
Claim 12
Dependent Claim
165 words
A hollow profile comprising a thermoplastic multilayer composite comprising: (I) at least one layer comprising a molding compound of a polyamide, and (II) at least one layer adjacent to said layer (I) comprising a molding compound comprising a mixture of (a) from 97.5 to 50% by wt. of polyvinylidene fluoride, and (b) from 2.5 to 50% by wt. of polyglutarimide comprised of the monomer units: (i) from 14 to 85% by weight of ##STR17## (ii) from 10 to 75% by weight ##STR18## (iii) from 0 to 15% by weight of ##STR19## (iv) from 7 to 20% by weight of ##STR20## wherein the sum of (i), (ii), (iii) and (iv) is 100% of component IIb, and wherein alkyl is methyl, ethyl, propyl, butyl, or hexyl; and R 1 to R 4 , identical or different, are hydrogen or (C n H 2n+1 ) wherein n is an integer of from 1 to 6, and wherein said layers (I) and (II) are directly bonded to one another.
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