Heat fusible polyester and polyamide dispersions

Claim 2

A composition of matter in paste form comprising discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.5 micron and about 50 microns, said discrete solid particles of polymeric material being dispersed in a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said composition in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1.

Claim 3

The composition of claim 1 wherein the thermoplastic polymer is the polyesterification product of at least one dicarboxylic acid having the general formula ##STR3## wherein R represents an alkylene radical, arylene radical, alkylene arylene alkylene radical or cycloalkylene radical having from 1 to 36 carbon atoms, with at least one diol having the general formula ##STR4## wherein R' and R" represent hydrogen or alkyl radicals having 1 to 3 carbon atoms and R"' represents an alkylene radical, arylene radical, alkylene arylene alkylene radical, cycloalkylene radical, alkylene cycloalkylene alkylene radical or alkylene oxy alkylene radical having from 1 to 36 carbon atoms and n is an integer from 0 to 1.

Claim 4

The composition of claim 2 wherein the polyester is prepared from isopthalic acid, succinic acid, and the condensation product of bisphenol A with propylene oxide.

Claim 5

The composition of claim 2 wherein the polyester is prepared from terephthalic acid, isophthalic acid, and neopentyl glycol.

Claim 6

The composition of claim 2 wherein the polyester is prepared from terephthalic acid, isophthalic acid, and ethylene glycol.

Claim 7

The composition of claim 1 wherein the thermoplastic polymer is a polyamide prepared from the polycondensation of at least one dicarboxylic acid having the general formula ##STR5## wherein R represents an alkylene radical, arylene radical, alkylene arylene alkylene radical, or cycloalkylene radical with at least one diamine having the following general formula ##STR6## wherein R"" represents an alkylene radical, arylene radical, alkylene arylene alkylene radical, cycloalkylene radical, or alkylene cycloalkylene alkylene radical having from 1 to 36 carbon atoms and n is an integer from 0 to 1.

Claim 8

The composition of claim 6 wherein the polyamide is prepared from dimerized vegetable fatty acids, ethylene diamine and diethylene triamine.

Claim 9

The composition of claim 1 wherein the tackifying, cohesion-increasing material comprises a resin or mixture of resins whose softening point is at or below room temperature.

Claim 10

The composition of claim 1 wherein the tackifying, cohesion-increasing material comprises a mixture of at least one resin and at least one diluent oil as a softening point lowering agent, the ratio of said resin to said oil being from about 1:0 to about 1:15.

Claim 11

The composition of claim 1 wherein the tackifying, cohesion-increasing material is selected from a hydrocarbon resin, an ester of rosin and mixtures thereof.

Claim 12

The composition of claim 10 wherein the hydrocarbon resin is an aromatic hydrocarbon resin.

Claim 13

The composition of claim 10 wherein the ester of rosin is selected from a methyl ester of rosin, methyl ester of hydrogenated rosin, methyl ester of disproportionated rosin and esters and modified esters of rosin with polybasic alcohols.

Claim 14

The composition of claim 1 further comprising coloring material.

Claim 15

The composition of claim 1 further comprising at least one hardening agent selected from drying oils and unsaturated alkyds.

Claim 16

The composition of claim 14 wherein the hardening agent is selected from linseed oil, bodied linseed oil and long oil isophthalic alkyd.

Claim 17

A printing ink in paste form comprising (1) a colorant, (2) discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.05 micron and about 50 microns, and (3) a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said printing ink in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1.

Claim 18

A printing ink in paste form comprising (1) a colorant, (2) discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.05 micron and about 50 microns, and (3) a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said printing ink in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1.

Claim 19

An adhesive composition in paste form comprising discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.05 micron and about 50 microns, said discrete solid particles of polymeric material being dispersed in a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said composition in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1.

Claim 20

An adhesive composition in paste form comprising discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.05 micron and about 50 microns, said discrete solid particles of polymeric material being dispersed in a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said composition in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1.

Claim 21

A molding material composition in paste form comprising discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.05 micron and about 50 microns, said discrete solid particles of polymeric material being dispersed in a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said composition in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1.

Claim 22

A molding material composition in paste form comprising discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.05 micron and about 50 microns, said discrete solid particles of polymeric material being dispersed in a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said composition in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1.

Claim 23

A process comprising printing onto the surface of a substrate a composition in paste form comprising (1) a colorant, (2) discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.05 micron and about 50 microns, and (3) a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said composition in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1 and heating the surface of the substrate for a length of time at a temperature sufficient to fuse the composition.

Claim 24

A process comprising printing onto the surface of a substrate a composition in paste form comprising (1) a colorant, (2) discrete solid particles of a thermoplastic polymeric material selected from polyesters and polyamides having a crystallinity below about 20%, a glass transition temperature or crystalline melting point above room temperature and a particle diameter between about 0.05 micron and about 50 microns, and (3) a tackifying, cohesion-increasing material whose softening point is at or below room temperature, said polymeric material and said cohesion-increasing material being present in said composition in a ratio of polymeric material to cohesion-increasing material of between about 1:6 to about 1:1 and heating the surface of the substrate for a length of time at a temperature sufficient to fuse the composition.

Claim 25

The printing ink of claim 14 wherein the colorant is carbon black.