Gas-barrier multi-layer structure

Details Gas-barrier multi-layer structure Gas-barrier multi-layer structure

2007-08-21

2007-08-21

Tran, Thao (Department: 1711)

Stock material or miscellaneous articles

Composite

Of polyamide

C428S476600, C428S036910

Reexamination Certificate

active

10682027

ABSTRACT:
The gas-barrier multi-layer structure of the present invention comprises at least one gas-barrier layer A and at lease one thermoplastic resin layer B. The gas-barrier layer A comprises a crystallizable polyamide resin which is produced by the polycondensation of a diamine component mainly comprising m-xylylenediamine with a dicarboxylic acid component comprising a C4-C20α,ω-linear aliphatic dicarboxylic acid and isophthalic acid in a specific proportion so as to have a particular crystallization behavior. The gas-barrier multi-layer structure is excellent in the fabricability such as deep drawing ability and can be fabricated into a highly transparent shaped article with less discoloration and malodor generation.

REFERENCES:
patent: 4908272 (1990-03-01), Harada et al.
patent: 5028462 (1991-07-01), Matlack et al.
patent: 5576415 (1996-11-01), Tanaka
patent: 6303741 (2001-10-01), Tanaka
patent: 0 409 666 (1991-01-01), None
European Search Report transmitted Jan. 2, 2004 for EP No. 03 02 2701.

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