This invention describes the manufacture of partially cured binder compositions based upon modification of drying oils with at least one multi-functional co-vulcanizing agent. The partially cured binder compositions can be blended with polymeric materials to prepare polymer blends. These polymer blends can be used to produce products such as cured solid layers. Methods of manufacturing the partially cured binder compositions and cured solid layers are described.

This invention describes the manufacture of partially cured binder compositions based upon modification of drying oils with at least one multi-functional co-vulcanizing agent. The partially cured binder compositions can be blended with polymeric materials to prepare polymer blends. These polymer blends can be used to produce products such as cured solid layers. Methods of manufacturing the partially cured binder compositions and cured solid layers are described.

The present invention provides an electroconductive paste which is excellent in a stability upon storage for a long period and in an anti-migration property, and capable of forming electrodes, wirings and sheets having a low resistance, an extensibility and a repetitive stretchability. An electroconductive silver paste, characterized in that, it contains a silver powder (A) and a rubber (B) containing a nitrile group, that a ratio by weight of (A)/(B) is within a range of from 77/23 to 90/10, that the silver powder (A) is an amorphous aggregated powder and/or a flaky powder, and that a content of an alkali metal in the nitrile group-containing rubber (B) is 4,000 ppm or less.

The release agent composition of the invention contains a rubber elastomer (A) and an acrylic polymer (B) containing a structural unit derived from a long-chain alkyl (meth)acrylate (b1) represented by the following formula (1):

##STR00001##

wherein R.sup.1 represents a hydrogen atom or a methyl group, and R.sup.2 represents a branched alkyl group having 10 to 30 carbon atoms.

The release agent composition of the invention contains a rubber elastomer (A) and an acrylic polymer (B) containing a structural unit derived from a long-chain alkyl (meth)acrylate (b1) represented by the following formula (1):

##STR00001##

wherein R.sup.1 represents a hydrogen atom or a methyl group, and R.sup.2 represents a branched alkyl group having 10 to 30 carbon atoms.

Provided is a coating composition capable of forming a coating film capable of maintaining excellent tack-free properties (releasability) for a long period of time on a plastic substrate or a rubber substrate, and particularly an elastic substrate made of rubber. The coating composition contains a rubber and an oil that is a liquid at 25? C., wherein the oil is dispersed at an average particle diameter of 50 ?m or less.

The present invention provides an electroconductive paste which is excellent in a stability upon storage for a long period and in an anti-migration property, and capable of forming electrodes, wirings and sheets having a low resistance, an extensibility and a repetitive stretchability.

An electroconductive silver paste, characterized in that, it contains a silver powder (A) and a rubber (B) containing a nitrile group, that a ratio by weight of (A)/(B) is within a range of from 77/23 to 90/10, that the silver powder (A) is an amorphous aggregated powder and/or a flaky powder, and that a content of an alkali metal in the nitrile group-containing rubber (B) is 4,000 ppm or less.

Polyhydric phenol resins (X) containing a polydiene skeleton and a structural unit represented by formula (1):

##STR00001##

wherein R.sup.p1 and R.sup.p3 each independently represent a hydrogen atom, a methyl group, or an ethyl group, R.sup.p2 represents a hydrogen atom, a methyl group, or a bond, one of X.sup.1 and X.sup.2 represents a hydroxy group, the other represents a monovalent group represented by the formula (2) below, and * represents a bond, and the CC bond structure in formula (1) is a part of the polydiene skeleton,

##STR00002##

wherein R.sup.S each independently represents a substituent, * represents a bond, and n represents a number of 0 to 4, afford cured products exhibiting a favorable toughness.

Polyhydric phenol resins (X) containing a polydiene skeleton and a structural unit represented by formula (1):

##STR00001##

wherein R.sup.p1 and R.sup.p3 each independently represent a hydrogen atom, a methyl group, or an ethyl group, R.sup.p2 represents a hydrogen atom, a methyl group, or a bond, one of X.sup.1 and X.sup.2 represents a hydroxy group, the other represents a monovalent group represented by the formula (2) below, and * represents a bond, and the CC bond structure in formula (1) is a part of the polydiene skeleton,

##STR00002##

wherein R.sup.S each independently represents a substituent, * represents a bond, and n represents a number of 0 to 4, afford cured products exhibiting a favorable toughness.

Provided is a conductive material dispersion comprising single-walled carbon nanotubes, a dispersant, a dispersion aid, and a dispersion medium, wherein the dispersant comprises polyvinyl butyral and hydrogenated nitrile butadiene rubber, and the dispersion aid comprises a compound represented by Formula 1.
A-(R).sub.n[Formula 1] In Formula 1, A is a structure having a carbon number of 16 to 50 carbon number and comprising four or more aromatic rings and nitrogen, R is a structure comprising an anionic functional group, and n is an integer of 1 to 5.