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A process is provided for producing a pressure-sensitive carbonless record sheet comprising the steps of preparing a hot melt coating composition, the hot melt coating composition having a melting point of from about 60°C. to about 140°C. The hot melt coating composition comprises a chromogenic mate

A process is provided for producing a pressure-sensitive carbonless record sheet comprising the steps of preparing a hot melt coating composition, the hot melt coating composition having a melting point of from about 60°C. to about 140°C. The hot melt coating composition comprises a chromogenic material and a solid alkane dioic acid. The hot melt coating composition is heated to a temperature above its melting point and the heated coating composition is applied to a substrate, the coating composition being applied at a coat weight of from about 0.2 pounds to about 8.0 pounds per 3300 square feet of substrate. The coating composition is set by cooling the coated substrate. A pressure-sensitive carbonless record sheet comprising a substrate having a plurality of surfaces and at least one surface of which is coated with about 0.2 pounds to about 8 pounds per 3300 square feet of a set hot melt coating composition is produced. The set hot melt coating composition has a melting point of from about 60°C. to about 140°C. and comprises a chromogenic material and a solid alkane dioic acid. A novel hot melt chromogenic coating composition having a melting point of from about 60°C. to about 140°C. and comprising a chromogenic material and a solid alkane dioic acid is produced.

대표청구항 ▼

A process for producing a pressure-sensitive carbonless record sheet comprising the steps of: (a) preparing a hot melt coating composition, said hot melt coating composition having a melting point of from about 60°C. to about 140°C., said hot melt coating composition comprising from about 0.1% to ab

A process for producing a pressure-sensitive carbonless record sheet comprising the steps of: (a) preparing a hot melt coating composition, said hot melt coating composition having a melting point of from about 60°C. to about 140°C., said hot melt coating composition comprising from about 0.1% to about 50.0%, by weight, of a chromogenic material and from about 50% to about 99.9% of a solid alkane dioic acid, said chromogenic material being a color developer of the acidic electron acceptor type, said alkane dioic acid being a water soluble dicarboxylic acid having a carbon chain of at least 5 carbon atoms; (b) heating said hot melt coating composition to a temperature above the melting point of said hot melt coating composition; (c) applying said heated coating composition to a 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 substrate, and (d) setting said coating composition by cooling said coated substrate.