US6355358B1
Expired / Lapsed
US
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Multilayer composite
Assignee: Evonik Operations GmbH
•
Filing: 2000-06-29
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Granted: 2002-03-12
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Expires: 2020-06-29
Abstract
Abstract A thermoplastic multilayer composite, and articles made therefrom, which has at least one layer I of a thermoplastic molding composition, at least one layer II of a further thermoplastic molding composition, bonded together with at least one layer of an adhesion promoter disposed between at least one layer I and at least one layer II. The adhesion promoter is at least 5% by weight of a graft copolymer prepared from 0.5 to 25% by weight, based on the total amount of graft copolymer, of a polyamine having at least 4 nitrogen atoms and having a number average molecular weight M n of at least 146 g/mol, and polyamide-forming monomers selected from lactams, ω-aminocarboxylic acids, equimolar mixtures of diamines and dicarboxylic acids, and their mixtures.
Inventors
- 👤 Michael Böer
- 👤 Guido Schmitz
- 👤 Georg Oenbrink
- 👤 Harald Häger
- 👤 Ralf Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:19
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B1/00; B32B1/08; B32B25/00; B32B25/04; B32B25/08; B32B27/34; B32B27/36; C; C08; C08G; C08G69/00; C08G69/48; C08L; C08L77/00; C08L77/02; C08L77/06; B32B2307/00; B32B2307/20; B32B2307/202; B32B2367/00; B32B2377/00; B32B2597/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/1352; Y10T428/139; Y10T428/1393; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/31786
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
130 words
A thermoplastic multilayer composite which comprises: I) at least one layer I of a thermoplastic molding composition; II) at least one layer II of a further thermoplastic molding composition; and at least one layer of an adhesion promoter disposed between at least one layer I and at least one layer II, wherein said adhesion promoter comprises at least 5% by weight of a graft copolymer comprising the following monomers: a) from 0.5 to 25% by weight, based on the total amount of graft copolymer, of a polyamine having at least 4 nitrogen atoms and having a number average molecular weight M n of at least 146 g/mol, and b) polyamide-forming monomers selected from the group consisting of lactams, ω-aminocarboxylic acids, equimolar mixtures of diamines and dicarboxylic acids, and mixtures thereof.
Claim 2
Dependent Claim
130 words
A thermoplastic multilayer composite which comprises: I) at least one layer I of a thermoplastic molding composition; II) at least one layer II of a further thermoplastic molding composition; and at least one layer of an adhesion promoter disposed between at least one layer I and at least one layer II, wherein said adhesion promoter comprises at least 5% by weight of a graft copolymer comprising the following monomers: a) from 0.5 to 25% by weight, based on the total amount of graft copolymer, of a polyamine having at least 4 nitrogen atoms and having a number average molecular weight M n of at least 146 g/mol, and b) polyamide-forming monomers selected from the group consisting of lactams, ω-aminocarboxylic acids, equimolar mixtures of diamines and dicarboxylic acids, and mixtures thereof.
Claim 3
Dependent Claim
28 words
The thermoplastic multilayer composite of claim 1 , wherein at least one of layer I or layer II comprises a polyamide molding composition or a polyester molding composition.
Claim 4
Dependent Claim
24 words
The thermoplastic multilayer composite of claim 1 , wherein layer I comprises a polyamide molding composition and layer II comprises a polyester molding composition.
Claim 5
Dependent Claim
17 words
The thermoplastic multilayer composite of claim 1 , wherein the polyamine contains at least 8 nitrogen atoms.
Claim 6
Dependent Claim
17 words
The thermoplastic multilayer composite of claim 1 , wherein the polyamine contains at least 11 nitrogen atoms.
Claim 7
Dependent Claim
24 words
The thermoplastic multilayer composite of claim 1 , wherein the polyamine has a number average molecular weight M n of at least 500 g/mol.
Claim 8
Dependent Claim
24 words
The thermoplastic multilayer composite of claim 1 , wherein the polyamine has a number average molecular weight M n of at least 800 g/mol.
Claim 9
Dependent Claim
26 words
The thermoplastic multilayer composite of claim 1 , wherein the graft copolymer has an amino group concentration in the range of from 100 to 2500 mmol/kg.
Claim 10
Dependent Claim
31 words
The thermoplastic multilayer composite of claim 1 , wherein the graft copolymer further comprises: c) an oligocarboxylic acid, selected from the group consisting of a dicarboxylic acid and a tricarboxylic acid.
Claim 11
Dependent Claim
40 words
The thermoplastic multilayer composite of claim 9 , wherein the amount of dicarboxylic acid is 0.015 to 3 mol %, and the amount of tricarboxylic acid is 0.01 to 1.2 mol % based on the total moles of polyamide-forming monomers.
Claim 12
Dependent Claim
28 words
The thermoplastic multilayer composite of claim 1 , wherein the adhesion promoter further comprises at least one polymer selected from the group consisting of a polyamide and polyester.
Claim 13
Dependent Claim
28 words
The thermoplastic multilayer composite of claim 2 , wherein the adhesion promoter further comprises at least one polymer selected from the group consisting of a polyamide and polyester.
Claim 14
Dependent Claim
28 words
The thermoplastic multilayer composite of claim 3 , wherein the adhesion promoter further comprises at least one polymer selected from the group consisting of a polyamide and polyester.
Claim 15
Dependent Claim
16 words
The multilayer composite of claim 1 , which comprises one layer I and one layer II.
Claim 16
Dependent Claim
21 words
The multilayer composite of claim 1 , wherein at least one layer of said multilayer composite has been rendered electrically conductive.
Claim 17
Dependent Claim
11 words
A hollow article comprising the multilayer composite of claim 1 .
Claim 18
Dependent Claim
14 words
The hollow article of claim 16 , wherein said hollow article is a pipe.
Claim 19
Dependent Claim
14 words
The hollow article of claim 17 , which is fully corrugated or partially corrugated.
Claim 20
Dependent Claim
23 words
The hollow article of claim 17 having an interior and an exterior surface, wherein the interior surface layer has been rendered electrically conductive.
Claim 21
Dependent Claim
22 words
The hollow article of claim 17 having an interior and an exterior surface, wherein the exterior surface layer is comprised of rubber.
Claim 22
Dependent Claim
39 words
The hollow article of claim 17 , wherein said pipe is a fuel line, a brake fluid line, a cooling fluid line, a hydraulic fluid line, a gas station line, an air conditioning unit line or a vapor line.
Claim 23
Dependent Claim
26 words
The hollow article of claim 16 , wherein said hollow article is a tank, a fuel tank, a filler neck, or a fuel tank filler neck.
Claim 24
Dependent Claim
10 words
A plate comprising the multilayer composite of claim 1 .
Claim 25
Dependent Claim
17 words
The multilayer composite of claim 1 , made by multi-component injection molding, coextrusion or coextrusion blow molding.
Claim 26
Dependent Claim
17 words
The hollow article of claim 16 , made by multi-component injection molding, coextrusion or coextrusion blow molding.
Claim 27
Dependent Claim
16 words
The plate of claim 22 , made by multi-component injection molding, coextrusion or coextrusion blow molding.
Claim 28
Dependent Claim
78 words
An adhesion promoter comprising at least 5% by weight of a graft copolymer comprising the following monomers: a) from 0.5 to 25% by weight, based on the total amount of graft copolymer, of a polyamine having at least 4 nitrogen atoms and having a number average molecular weight M n of at least 146 g/mol, and b) polyamide-forming monomers selected from the group consisting of lactams, ω-aminocarboxylic acids, equimolar mixtures of diamines and dicarboxylic acids, and mixtures thereof.
Claim 29
Dependent Claim
78 words
An adhesion promoter comprising at least 5% by weight of a graft copolymer comprising the following monomers: a) from 0.5 to 25% by weight, based on the total amount of graft copolymer, of a polyamine having at least 4 nitrogen atoms and having a number average molecular weight M n of at least 146 g/mol, and b) polyamide-forming monomers selected from the group consisting of lactams, ω-aminocarboxylic acids, equimolar mixtures of diamines and dicarboxylic acids, and mixtures thereof.
Claim 30
Dependent Claim
151 words
An adhesion promoter comprising: I) from 5 to 60 parts by weight of a graft copolymer comprised of the following monomers: a) from 0.5 to 25% by weight, based on the total amount graft copolymer, of a polyamine having at least 4 nitrogen atoms and having a number average molecular weight M n of at least 146 g/mol, and b) polyamide-forming monomers selected from the group consisting of lactams, ω-aminocarboxylic acids, equimolar mixtures of diamines and dicarboxylic acids, and mixtures thereof, II) from 10 to 85 parts by weight of a polyamide; III) from 10 to 85 parts by weight of a polyester; wherein the sum of the parts by weight of I, II, and III is 100; IV) a maximum of 40 parts by weight of additives comprising at least one additive selected from the group consisting of impact-modifying rubber, flame retardants, stabilizers, plasticizers, fillers, reinforcing fibers, and processing auxiliaries.
Claim 31
Dependent Claim
151 words
An adhesion promoter comprising: I) from 5 to 60 parts by weight of a graft copolymer comprised of the following monomers: a) from 0.5 to 25% by weight, based on the total amount graft copolymer, of a polyamine having at least 4 nitrogen atoms and having a number average molecular weight M n of at least 146 g/mol, and b) polyamide-forming monomers selected from the group consisting of lactams, ω-aminocarboxylic acids, equimolar mixtures of diamines and dicarboxylic acids, and mixtures thereof, II) from 10 to 85 parts by weight of a polyamide; III) from 10 to 85 parts by weight of a polyester; wherein the sum of the parts by weight of I, II, and III is 100; IV) a maximum of 40 parts by weight of additives comprising at least one additive selected from the group consisting of impact-modifying rubber, flame retardants, stabilizers, plasticizers, fillers, reinforcing fibers, and processing auxiliaries.
Claim 32
Dependent Claim
21 words
A method of adhering at least two layers of a thermoplastic multilayer composite using the adhesion promoter of claim 27 .
Claim 33
Dependent Claim
21 words
A method of adhering at least one polyamide to at least one polyester using the adhesion promoter of claim 27 .
Claim 34
Dependent Claim
21 words
A method of adhering at least one polyamide to at least one polyester using the adhesion promoter of claim 28 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-03-11 | 2005-09-10 | 2006-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-03-11 | 2009-09-10 | 2010-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-03-11 | 2013-09-10 | 2014-03-12 | $7700.00 | Window Closed / Lapsed |