Material composites
AssigneeEms-Chemie AG
InventorsEtienne Aepli, Botho Hoffmann
Life of this patent
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Abstract
A composite containing directly adjoining and firmly bonded sections (I) and (II) of the following type: (I) section, formed from a thermoplastic moulding compound FM-1 containing at least one polyamide (A) and optionally fillers and reinforcing materials (C) and additives (D); (II) section, formed from a thermoplastic moulding compound containing at least one olefinic and/or vinyl aromatic polymer (E) and optionally fillers and reinforcing agents (F), plasticisers (G) and additives (H); wherein the moulding compound FM-1 or FM-2 contains 0.1 to 5.0 percent by weight of polyethyleneimine (B) or a copolymer or derivative thereof and a method for producing such composites.
Claims17
A composite containing directly adjoining and firmly bonded sections (I) and (II) of the following type:
- (I) section, formed from a thermoplastic moulding compound FM-1 containing at least one polyamide (A) and optionally fillers and reinforcing materials (C) and additives (D);
- (II) section, formed from a thermoplastic moulding compound FM-2 containing at least one olefinic and/or vinyl aromatic polymer (E) and optionally fillers and reinforcing agents (F), plasticisers (G) and additives (H);
- wherein the moulding compound FM-1 or FM-2 contains 0.1 to 5.0 percent by weight of polyethyleneimine homopolymer (B).
Use of polyethyleneimine homopolymer in a composite containing sections (I), formed from a moulding compound FM-1 containing polyamide, and containing sections (II), formed from a moulding compound FM-2 containing olefinic and/or vinyl aromatic polymer, for improving the adhesion strength between the sections (I) and (II).
Dependencies are inferred from the claim text.