Copolyamides containing caprolactam, lauriclactam and 11-aminoundecanoic acid

Claim 2

A composition of matter comprising a copolyamide consisting essentially of recurring units of caprolactam, lauriclactam, 11-aminoundecanoic acid and a hexamethylene diamine salt of an aliphatic dicarboxylic acid corresponding to the formula HOOC--(CH.sub.2).sub.n --COOH (I) in which n is 4, 7, 8, 10 or 11, said units being incorporated in the copolyamide in the following proportions:caprolactam 20-40% by weightlauriclactam 20-35% by weight11-aminoundecanoic acid 15-35% by weighthexamethylene diamine salt ofthe acid of formula (I) 15-40% by weight and a plasticizer which is compatible with a suitable for plasticizing said copolyamide.

Claim 3

The composition according to claim 1, wherein the units are incorporated in the copolyamide in the following proportions: caprolactam 25-35% by weight lauriclactam about 30% by weight 11-aminoundecanoic acid 18-25% by weight hexamethylene diamine salt of the acid of formula (I) 15-30% by weight.

Claim 4

The composition according to claim 1, wherein the units are incorporated in the copolyamide in the following proportions: caprolactam about 30% by weight lauriclactam about 30% by weight 11-aminoundecanoic acid about 20% by weight hexamethylene diamine salt of the acid of formula (I) about 20% by weight.

Claim 5

The composition according to claim 1, wherein n in formula (I) stands for the number 4, 7, 8 or 10.

Claim 6

The composition according to claim 4, wherein n in formula (I) is 7 or 8.

Claim 7

A process for the production of a heat bonding composition comprising the steps of polymerizing caprolactam, lauriclactam, 11-aminoundecanoic acid and hexamethylene diamine salt of an aliphatic dicarboxylic acid corresponding to the formula HOOC--(CH.sub.2).sub.n --COOH (I) in which n is 4, 7, 8, 10 or 11, under pressure at elevated temperature in the following quantitative proportions: caprolactam 20-40% by weight lauriclactam 20-35% by weight 11-aminoundecanoic acid 15-35% by weight hexamethylene diamine salt of the acid of formula (I) 15-40% by weight thereby forming a copolyamide, and incorporating a plasticizer into said copolyamide which is compatible with and suitable for plasticizing said copolyamide.

Claim 8

A process for the production of a heat bonding composition comprising the steps of polymerizing caprolactam, lauriclactam, 11-aminoundecanoic acid and hexamethylene diamine salt of an aliphatic dicarboxylic acid corresponding to the formula HOOC--(CH.sub.2).sub.n --COOH (I) in which n is 4, 7, 8, 10 or 11, under pressure at elevated temperature in the following quantitative proportions: caprolactam 20-40% by weight lauriclactam 20-35% by weight 11-aminoundecanoic acid 15-35% by weight hexamethylene diamine salt of the acid of formula (I) 15-40% by weight thereby forming a copolyamide, and incorporating a plasticizer into said copolyamide which is compatible with and suitable for plasticizing said copolyamide.

Claim 9

A process according to claim 6, wherein the basic units are polymerised in the following quantitative proportions: caprolactam 25-35% by weight lauriclactam about 30% by weight 11-aminoundecanoic acid 18-25% by weight hexamethylene diamine salt 15-30% by weight of the acid of formula (I).

Claim 10

A process according to claim 6, wherein the basic units are polymerised in the following quantitiative proportions: caprolactam about 30% by weight lauriclactam about 30% by weight 11-aminoundecanoic acid about 20% by weight hexamethylene diamine salt of the acid of formula (I) 20% by weight.

Claim 11

A process according to claim 6 wherein n in formula (I) stands for the number 4, 7, 8 or 10.

Claim 12

A process according to claim 9 wherein n in formula (I) stands for the number 7 or 8.

Claim 13

A process according to claim 6 wherein polymerisation is carried out at a temperature of 280° to 300°C under a pressure of from 10 to 50 atms.

Claim 14

A process according to claim 6 wherein after-condensation is carried out for 1 to 3 hours under normal pressure at 250° to 300°C.

Claim 15

The composition of matter as defined by claim 1, wherein said plasticizer is present in an amount up to about 50% by weight of the total composition.

Claim 16

The composition of matter as defined by claim 13, wherein said plasticizer is present in an amount up to about 25% by weight of the total composition.

Claim 17

The composition of matter as defined by claim 1, wherein said plasticizer is selected from the group consisting of a sulfonic acid derivative of the formula ##SPC2## wherein R 1 is hydrogen or methyl and R 2 is hydrogen, lower alkyl or cyclohexyl; a phenol carboxylic acid; a phenol carboxylic acid alkyl ester and bisphenol A.

Claim 18

The composition of matter as defined by claim 15, wherein said plasticizer is selected from the group consisting of benzene sulfonic acid ethyl amide, toluene sulfonic acid ethyl amide, butyl-p-hydroxy benzoate, lauryl-p-hydroxy-benzoate, p-oxy-benzoic acid, octyl-p-oxy benzoate and bisphenol A.

Claim 19

The composition of matter as defined by claim 1, further comprising an aqueous dispersant.

Claim 20

The composition of matter as defined by claim 17, further comprising a thickener and a stabilizer.