Fibrous products from thermoplastic polyamide polymers

Claim 2

The fibrous mat of claim 2 wherein the polymeric fat acid has a dimer acid content of at least 80 percent by weight.

Claim 3

The fibrous mat of claim 1 wherein the diamine has the formula of H2N-R''-NH2 wherein R'' is An aliphatic, cycloaliphatic or aromatic hydrocarbon radical of 2-40 carbon atoms.

Claim 4

The fibrous mat of claim 1 wherein the polyamide is selected from the group consisting of a. the reaction product of polymerized tall oil fatty acid and hexamethylene diamine, b. the reaction product of polymerized tall oil fatty acid and 4,4''-diamino-3,3''-dimethyl (dicyclohexyl) methane, c. a copolymer of polymerized tall oil fatty acid, azelaic acid, hexamethylenediamine, and ethylenediamine, d. a copolymer of epsilon-caprolactam, adipic acid and hexamethylenediamine, and sebacic acid and hexamethylenediamine, and e. a copolymer of epsilon-caprolactam, adipic acid and hexamethylenediamine, sebacic acid and hexamethylenediamine, and 11-aminoundecanoic acid.

Claim 5

The fibrous mat of claim 1 wherein the polyamide solution contains at least five percent by weight of dissolved polyamide.

Claim 6

The fibrous mat of claim 6 wherein the solvent is a chlorinated hydrocarbon solvent.

Claim 7

The fibrous mat of claim 7 wherein the solvent is methylene chloride.

Claim 8

The fibrous mat of claim 7 wherein the solvent is chloroform.

Claim 9

The fibrous mat of claim 7 wherein the solvent is methyl chloroform.

Claim 10

The fibrous mat of claim 6 wherein the solvent is a mixture of solvents.

Claim 11

The fibrous mat of claim 11 wherein the solvent is a mixture of tetrahydrofuran containing up to 0.3 parts by weight of methanol per part of tetrahydrofuran.

Claim 12

A process of forming a bonded article which comprises simultaneously shearing at least two layers of the fibrous mat of claim 1 while the layers are in contact.