Emery Industries, Inc.

Internationale Octrooi Maatschappij 'octropa' Bv

Adrien G Hinze

Hendrik G Stigter

Robert P Roggeveen

Abraham J Meulenberg

Arie Dick Kardol

Maria L Slettenhaar-von Piekartz

Gerrit A Van Rijs

The invention relates to novel ester lubricants which can be used in combination with a hydrocarbon base fluid. The ester lubricants are mixtures of esters based on a 2-alkyl-substituted propane diol-1,3, a trimethylol alkane (C.sub.1 -C.sub.4), optionally a C.sub.5 -C.sub.15 -ether diol and a mixture of C.sub.6 -C.sub.10 - and C.sub.12 -C.sub.18 -monocarboxylic acids.

Ester lubricants

By the incorporation of small amounts of specific polyamides into polyalkenes, such as polypropylene and polyethylene, it is possible to significantly improve the dyeing properties, including color intensity, color homogeneity and color fastness, of the polyalkene. Polyamides useful for this purpose are derived from mixed dicarboxylic acids, diamine and triamine containing two primary and one tertiary amine groups.

Polyalkene having improved dyeability modified with polyamide

Polyamide from diamine, triamine and polycarboxylic acid mixture

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.

Growing community of inventors

Dordrecht, Netherlands

Adrien G Hinze