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.

Abstract: This invention relates to a sorbtion paper which comprises a fibrous base paper material which is resiliently flexible and which is further characterized by being substantially free from loose, dusty sorbtion particles and by being substantially free of lumps and holes. Activated sorbition particles are disbursed in the fibrous paper base material, the sorbtion particles being substantially uniformly dispersed throughout all dimensions of the base material and the activated sorbtion material being present in an amount of up to about 85% based on the weight of the base paper material. The activated sorbtion particles are characterized by a size of less than about 1,000 microns and an activation rating of less than about 250%. This invention further relates to sorbtion devices for use in combination with internal combustion engines and liquid body waste devices incorporating the above-recited sorbtion paper.

Abstract: A novel coating composition is disclosed comprising oil-containing microcapsules dispersed in an aqueous continous phase, which phase also contains finely divided silica particles and a binder for said microcapsules and said silica particles. The silica particles have been treated with an organic material such as an organic silicon compound to give the particles a hydrophobic surface. The coating composition has utility in the manufacture of paper coated with microcapsules. Such paper is characterized by a substantial reduction of specking when used in photocopying apparatus which utilizes a pressure nip to assist transfer of a powder image from a photoreceptor belt to the paper.In a preferred form, the oil contains a color precursor of the electron donating type and the aqueous composition contains stilt material such as starch particles. The coating composition is applied to paper to form a transfer coating on copy paper, said copy paper having utility in the production of multi-part forms.

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 having a melting point of from about 60.degree. C. to about 140.degree. 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.