Process for producing pressure-sensitive copy sheets using novel radiation curable coatings

A process for producing a pressure-sensitive carbonless transfer sheet comprising the steps of:

• (a) preparing a liquid chromogenic coating composition by mixing a chromogenic material with a liquid radiation curable substance, said chromogenic material being a color precursor of the electron donating type, said liquid radiation curable substance including one or a mixture of ethylenically unsaturated organic compounds having at least one terminal ethylenic group per molecule, said liquid radiation curable substance being compatible with the color forming characteristics of said color precursor;
• (b) coating said liquid chromogenic coating composition on a substrate, said coating being applied at a coat weight of from about 1.0 pounds to about 8.0 pounds per 3300 square feet of said substrate;
• and
• (c) exposing said coated substrate to radiation for a period of time sufficient to cure said liquid coating composition to a tack-free film, said tack-free film being compatible with the color forming characteristics of said color precursor.

A process for producing a pressure-sensitive carbonless copy sheet comprising the steps of:

• (a) preparing a liquid chromogenic coating composition by mixing a chromogenic material with a liquid radiation curable substance, said chromogenic material being selected from the group consisting of acidic electron accepting color developers and electron donating color precursors, said liquid radiation curable substance including at least one ethylenically unsaturated organic compound having at least one terminal ethylenic group per molecule, said radiation curable substance being compatible with the color forming characteristics of said chromogenic material;
• (b) coating said liquid coating composition on a paper substrate, said coating composition being applied at a coat weight of from about 0.2 pounds to about 8 pounds per 3300 square feet of said substrate;
• and
• (c) exposing said coated paper to radiation for a period of time sufficient to cure said liquid coating composition to a tack-free film, said tack-free film being compatible with the color forming characteristics of said chromogenic material.

A process for producing a pressure-sensitive carbonless record sheet comprising the steps of:

• (a) preparing a liquid chromogenic coating composition by mixing together from about 25 to about 75% by weight of a chromogenic material and from about 25 to about 75% of a liquid radiation curable substance, said radiation curable substance being a mixture of ethylenically unsaturated organic compounds, said mixture comprising from about 33 to about 67% by weight of said compounds having one terminal ethylenic group per molecule and from about 33 to about 67% by weight of said compounds having more than one terminal ethylenic group per molecule and up to about 15% by weight of a filler material, said radiation curable substance being compatible with the color forming characteristics of said chromogenic material;
• (b) coating said liquid coating composition on a paper substrate, said coating composition being applied at a coat weight of from about 0.2 pounds to about 8.0 pounds per 3300 square feet of said substrate;
• and
• (c) exposing said coated paper to radiation for a period of time sufficient to cure said liquid coating composition to a tack-free film, said tack-free film substance being compatible with the color forming characteristics of said chromogenic material.

A process for producing a pressure-sensitive carbonless transfer sheet comprising the steps of:

• (a) preparing a solution of a chromogenic material in an oil, said chromogenic material being a color precursor of the electron donating type, said chromogenic material comprising from about 0.5 to about 20.0% of the weight of said oil;
• (b) microencapsulating said solution of said chromogenic material in said carrier oil;
• (c) preparing a liquid chromogenic coating composition by mixing together said microencapsulated solution of said chromogenic material in said oil with a liquid radiation curable substance, said radiation curable substance being a mixture of ethylenically unsaturated organic compounds, said mixture comprising from about 33 to about 67% by weight of said compounds having one terminal ethylenic group per molecule and from about 33 to about 67% by weight of said compounds having more than one terminal ethylenic group per molecule and up to about 15% by weight of a filler material, said radiation curable substance being compatible with the color forming characteristics of said chromogenic material;
• (d) coating said liquid coating composition on a paper substrate said coating being applied at a coat weight of from about 1 pound to about 8 pounds per 3300 square feet of said substrate;
• and
• (e) exposing said coated paper to radiation for a period of time sufficient to cure said liquid coating composition to a tack-free film, said tack-free film being compatible with the color forming characteristics of said chromogenic material.

A process for the production of a manifold carbonless form having one or more surfaces coated with chromogenic material comprising:

• (a) providing a continuous paper substrate;
• (b) marking at least one surface of said paper substrate with a pattern;
• (c) preparing a non-aqueous, solvent-free, liquid chromogenic coating composition by mixing a chromogenic material with a liquid radiation curable substance, said chromogenic material being selected from the group consisting of acidic electron accepting color developers and electron donating color precursors, said liquid radiation curable substance including at least one ethylenically unsaturated organic compound having at least one terminal ethylenic group per molecule;
• (d) coating said liquid chromogenic coating composition onto said paper substrate, said coating composition being applied at a coat weight of from about 0.2 pounds to about 8.0 pounds per 3300 square feet of said paper substrate;
• (e) exposing said coated paper substrate to radiation for a period of time sufficient to cure said non-aqueous, solvent-free liquid coating composition to a tack-free film;
• (f) combining said marked, coated paper substrate with at least one additional paper substrate to form a plurality of paper substrates, each of said additional paper substrates being characterized by having at least a portion of at least one surface coated with at least one non-aqueous, solvent-free coating of said chromogenic material, said coating being cured;
• (g) collating said plurality of marked, coated paper substrated;
• and
• (h) placing said collated paper substrates in contiguous relationship to one another to create a manifold carbonless form.

A process for the continuous production of a manifold carbonless form having one or more surfaces coated with capsular chromogenic material comprising:

• (a) providing a plurality of continuous paper substrates;
• (b) advancing each substrate of said plurality of continuous substrates at substantially the same speed, said plurality of continuous substrates being spaced apart and being advanced in a cooperating relationship with one another;
• (c) marking at least one substrate of said plurality of continuous substrates with a pattern;
• (d) preparing a non-aqueous, solvent-free liquid chromogenic coating composition by mixing a chromogenic material with a liquid radiation curable substance, said chromogenic material being selected from the group consisting of acidic electron accepting color developers and electron donating color precursors, said liquid radiation curable substance including at least one ethylenically unsaturated organic compound having at least one terminal ethylenic group per molecule;
• (e) coating said liquid coating composition on at least one paper substrate of said plurality of paper substrates, said coating composition being applied at a coat weight of from about 0.2 pounds to about 8.0 pounds per 3300 square feet of said substrate;
• (f) exposing said coated substrate to radiation for a period of time sufficient to cure said liquid coating composition to a tack-free film;
• (g) collating said plurality of continuous webs;
• and
• (h) placing said collated continuous webs in contiguous relationship to one another to create a manifold form.