Textiles: manufacturing
Patent
1976-05-07
1977-12-20
Kendall, Ralph S.
Textiles: manufacturing
427150, 427151, 427288, 428207, 428211, 428488, 428537, 428914, B41L 136
Patent
active
040637549
ABSTRACT:
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 being water insoluble and having a melting point of from about 60.degree. C to about 140.degree. C. The hot melt coating composition includes a chromogenic material. The chromogenic material is a meltable color developer of the acidic electron accepting type. 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 novel liquid chromogenic coating composition is produced, the coating composition having a melting point of from about 60.degree. C to about 140.degree. C and comprising from about 15% to about 100% of a chromogenic material and from about 0% to about 80% of a rheology modifying material, the chromogenic material being a meltable color developer of the acid electron accepting type. A pressure-sensitive record sheet is produced, the record sheet comprising a substrate having a plurality of surfaces, at least one of the surfaces being coated with a set hot melt coating composition, the set hot melt suspending medium including a chromogenic material dispersed therein.
REFERENCES:
patent: 3016308 (1962-01-01), Macauly
patent: 3079351 (1963-02-01), Staneslow
patent: 3684549 (1972-08-01), Shank
patent: 3914511 (1975-10-01), Vassiliades
patent: 3919450 (1975-11-01), Shimizu et al.
patent: 3955026 (1976-05-01), Matsukawa et al.
Shackle Dale Richard
Young, Jr. Ainslie Thomas
Hess Bruce H.
Kendall Ralph S.
The Mead Corporation
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