Processless diacetylenic salt films capable of developing a black image

A mixture of radiation imageable polyacetylenic compounds which have similar photosensitivities and which are imageable in complementary colors combinable to form a permanent black or near black image color, said mixture comprising (a) an imageable metal salt of a polyacetylene C.sub.6 to C.sub.48 mono or dicarboxylic acid which develops a first color and (b) at least one imageable polyacetylene compound capable of developing a second color complementary to said first color, said imageable metal salt and said imageable polyacetylene compound being combined as crystals in a molar ratio of about 10:1 to about 1:10 with an amount of a binder effective to substantially eliminate agglomeration of said crystals.

A composition comprising at least two distinct layers, at least one first layer comprising crystals of at least one imageable metal salt of a polyacetylene C.sub.6 to C.sub.48 mono- or dicarboxylic acid capable of developing a first color, in combination with at least one binder in an amount effective to substantially eliminate agglomeration of said crystals;

• and
• at least one additional layer comprising crystals of at least one imageable polyacetylene compound capable of developing a second color complementary to said first color in said first layer, in combination with at least one binder in an amount effective to substantially eliminate agglomeration of said crystals.

An imageable laminate comprising a first layer of a support, a second layer of an imageable metal salt of a diacetylene C.sub.6 to C.sub.45 monocarboxylic acid imageable to a first color, and a third layer comprising at least one polyacetylene compound imageable to a second color, said imageable metal salt of said second layer and said imageable polyacetylene compound of said third layer having similar photosensitivities, said first color and said second color being complementary and combinable to form a black or near black image color when viewed in the laminate.

A method of producing a permanent black or near black image color comprising exposing a mixture of radiation imageable polyacetylenic compounds which have similar photosensitivities and which are imageable in complementary colors combinable to form a black or near black image color, said mixture comprising (a) a imageable metal salt of a polyacetylene C.sub.6 to C.sub.48 monocarboxylic acid which develops a first color and (b) at least one imageable polyacetylene compound capable of developing a second color complementary to said first color,

• said method comprising exposing said mixture first to ionizing radiation and then to heat energy.

A mixture of an imageable zinc metal salt of a polyacetylene C.sub.6 to C.sub.48 mono- or di-carboxylic acid in combination with an additive selected from the group consisting of a C.sub.2 to C.sub.8 sodium carboxylate, a sodium nitrate anion and mixtures, thereof, at a weight ratio of about 4:1 to about 1:20 by weight of said imageable metal salt.

A laminate comprising

• 1. a first layer of a support;
• and
• 2. a second layer comprising a mixture of an imageable zinc salt of a polyacetylene C.sub.6 to C.sub.48 mono- or di-carboxylic acid in combination with an additive selected from the group consisting of a C.sub.2 to C.sub.8 sodium linear alkyl carboxylate, sodium nitrate and mixtures, thereof, at a weight ratio of about 4:1 to about 1:20 by weight of said imageable metal salt, in combination with at least one polyacetylenic polymer providing a permanent black or near-black image color in the form of a design.