Emery Industries, Inc.

Hendrik G Stigter

Adrien G Hinze

Maria L Slettenhaar-von Piekartz

The invention relates to novel polyamides substantially based on polycarboxylic acids, in particular polymerized fatty acids, and polyalkylene polyamines in which the recurring alkylene groups are of different carbon chain lengths and two or more different alkylene imine groups occur. These polyamides show amine values from 5-600, acid values below 2 and viscosities of 0.05-25 Pa s and are useful as curing catalysts for epoxy resins.

Polyamides

Polyamides having at least three different recurring polyamide repeating units are provided herein. These polyamides are useful hot melt adhesives for textiles and exhibit low softening point, high viscosity, high adhesive strength and good detergent and dry cleaning resistance.

Caprolactam copolyamides useful as hot melt adhesives for textiles

Polyamides suitable as hot-melt adhesives and containing groups derived from a polymeric fatty acid containing 70-90% by weight of dimer acid and from a triamine of the structure ##STR1## in which R.sub.1 is a C.sub.1 -C.sub.3 alkyl group and R.sub.2 and R.sub.3 are bivalent hydrocarbon radicals. Optionally the polyamide also contains groups derived from a C.sub.2-20 diamine, a dicarboxylic acid containing 6-12 carbon atoms, a monocarboxylic acid or a C.sub.5-12 lactam.

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Berkenwoude, Netherlands

Hendrik G Stigter