Homopolyamide and terpolyamide blend
AssigneeToyo Seikan Co., Ltd.
InventorsHiroshi Ueno, Tetsuo Tsukamoto
Life of this patent
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Abstract
An adhesive composition for bonding together metal sheets in an extremely short time, which is an intimate mixture of (I) nylon 66, nylon 6, nylon 610, nylon 11 or nylon 12 and (II) a semicrystalline copolyamide such as a copolyamide of hexamethylene diammonium adipate, hexamethylene diammonium sebacate and 6-amino-caproic acid, in a ratio by weight of (I):(II) from 99:1 to 90:10.
Claims6
An adhesive composition for bonding together metal sheets, said composition being a homogeneous blend consisting essentially of:
- I. a crystalline linear homopolyamide selected from the group consisting of polyhexamethylene adipamide, poly .epsilon.-caprolactam, polyhexamethylene sebacamide, poly .omega.-undecamide, and poly .omega.-dodecamide, of a relative viscosity of at least 1.5 when measured in a solution of 1 g polymer in 100CC of 98% sulphuric acid at 20.degree.C and
- Ii. a copolyamide of at least three members selected from the group consisting of alkylene diammonium carboxylates of alkylene diamines having 4 to 14 carbon atoms and alkylene dicarboxylic acids having 4 to 14 carbon atoms, and alkylene amino carboxylic acids having 4 to 14 carbon atoms,
- in a ratio by weight of (I):
- (II) from 99:1 to 90:10.
An adhesive composition for bonding together metal sheets, said composition being a homogeneous blend consisting essentially of:
- I. a crystalline linear polyamide selected from the group consisting of polyhexamethylene sebacamide, poly .omega.-undecamide and poly .omega.-dodecamide, of a relative viscosity of at least 1.5 when measured in a solution of 1 g polymer in 100CC of 99% sulphuric acid and
- Ii. a copolyamide of three members hexamethylene diammonium adipate, hexamethylene diammonium sebacate, and 6-amino-caproic acid, in a ratio by weight of (I):(II) from 99:1 to 90:10.
Dependencies are inferred from the claim text.