Synthetic polyamides of a dimeric fatty acid, a lower aliphatic carboxylic acid, ethylene diamine, and a co-diamine

Claim 2

A polyamide as in claim 1 wherein a mixture of ethylene diamine and an alkylene diamine having six to 12 carbon atoms is employed.

Claim 3

A polyamide as in claim 3 wherein said alkylene diamine is 1, 6-diaminohexane, 1,9-diaminononane, or 1,12-diaminododecane (, or trimethyl-hexamethylene diamine) .

Claim 4

A polyamide as in claim 1 wherein a mixture of ethylene diamine and an aromatic diamine is employed.

Claim 5

A polyamide as in claim 5 wherein said aromatic diamine is 1, 4-bis(aminoethyl)-benzene or 9,9-bis(aminopropyl)-fluorene.

Claim 6

A polyamide as in claim 1 wherein a mixture of ethylene diamine and a cycloaliphatic diamine are employed.

Claim 7

A polyamide as in claim 7 wherein said cycloaliphatic diamine is 3-aminomethyl-3,5,5-trimethyl-cyclohexylamine.

Claim 8

A polyamide as in claim 1 wherein a mixture of ethylene diamine and an ether diamine is employed.

Claim 9

A polyamide as in claim 9 wherein said ether diamine is 1, 10-diamino-4,7-dioxa-decane, 1,10-diamino-4,7- dioxa-5-methyl-decane, 1,13-diamino-4,7,10-trioxa-decane, and 1,12-diamino-4,9-dioxa-dodecane.

Claim 10

A synthetic polyamide prepared by cocondensing, at a temperature between about 180*C. and about 250*C., substantially equivalent amounts of an acid component consisting essentially of a dimeric fatty acid prepared by polymerizing a monobasic acid of an aliphatic hydrocarbon having eight to 24 carbon atoms and (2) acetic acid, and of an amine component consisting essentially of ethylene diamine and trimethylhexamethylene diamine, the equivalence ratio between said dimeric fatty acid and said acetic acid being 0.80:0.20, and the equivalence ratio between said ethylene diamine and said trimethylhexamethylene diamine being 0.8:0.2.

Claim 11

A SYNTHETIC POLYAMIDE PREPARED BY COCONDENSING, AT A TEMPERATURE BETWEEN ABOUT 150*C. AND ABOUT 250*C., SUBSTANTIALLY EQUIVALENT AMOUNTS OF AN ACID COMPONENT CONSISTING ESSENTIALLY OF (1) A DIMERIC FATTY ACID PREPARED BY POLYMERIZING A MONOBASIC ACID OF AN ALIPHATIC HYDROCARBON HAVING EIGHT TO 24 CARBON ATOMS AND (2) A MONOBASIC STRAIGHT CHAIN ALKANOIC ACID HAVING TWO TO FIVE CARBON ATOMS, AND OF AN MINE COMPONENT CONSISTING SSENTIALLY OF ETHYLENE DIAMINE AND A CO-DIAMINE SELECTED FROM THE GROUP CONSISTING OF (1) A STRAIGHT CHAIN ALKYLENE DIAMINE HAVING SIX TO 12 CARBON ATOMS, (2) AN AROMATIC DIAMINE HAVING ONE OF THE FOLLOWING FORMULAS: