Abstract: An aqueous dispersion of an ethanol amine salt of polyfluoroalkyl phosphate is prepared by using a polyfluoroalkanol, a phosphorus oxyhalide water and an ethanol amine. The process for producing a polyfluoroalkyl phosphate comprises the first step of reacting a polyfluoroalkanol containing small amount of water with phosphorus oxyhalide and the second step of producing a polyfluoroalkyl phosphate by hydrolyzing the reaction product and the third step of reacting the reaction product with ethanol amine in a large amount of water.

Abstract: A process for producing a perfluorocarboxylic acid comprises reacting a perfluoroalkyl olefin with ozone to produce a perfluoroalkyl ozonide and a perfluoroalkyl aldehyde and converting said perfluoroalkyl ozonide and perfluoroalkyl aldehyde to perfluorocarboxylic acid with an oxidizing agent.

Abstract: A polymer emulsion is produced by reacting a vinyl monomer having an active halogen with a higher amine in a monomer having ethylenically unsaturated double bond and then conducting a free radical polymerization with the addition of water.

Abstract: A polymer emulsion is produced by the free radical polymerization of a monomer having an ethylenic unsaturated double bond in the presence of 0.1 to 10 wt parts of a compound having the formula ##STR1## wherein R.sub.1 represents hydrogen atom or methyl group; R.sub.2 represents hydrogen atom, methyl or ethyl group; R.sub.3 represents an alkyl group having 6 to 22 carbon atoms; n is 1, 2, or 3; and X represents a halogen atom, per 100 wt parts of the monomer.

Abstract: A process for producing a developer sheet for a pressure-sensitive recording paper which comprises dissolving an oil-soluble developer in an organic solvent, emulsifying the solution in water to provide an oil-in-water emulsion, and then coating on or incorporating into a support the resulting emulsion is disclosed.

Abstract: A latex of chloroprene polymer is produced without using an emulsifier, which comprises polymerizing chloroprene by free radical polymerization, in an aqueous medium in the presence of 0.2 - 10 wt.% of styrene sulfonic acid or a derivative thereof, based on the total monomers added to the system. In a preferred embodiment the quantity of chloroprene added is 0.5 to 50% wt.

Abstract: A recording sheet comprising a support having thereon a color developer layer containing (1) a metal compound of an aromatic carboxylic acid and (2) at least one of gelatin or a gelatin derivative, the metal compound of an aromatic carboxylic acid being capable of forming a colored image when reacted with a color former.

Abstract: A method for fanning multi-ply sheets into units thereof, which comprises applying the adhesive composition to one side of a stack of multi-ply sheets, e.g., pressure-sensitive copying sheet units, and separating each unit of the sheets.

Abstract: Polymerization of 2,3-dichloro-1,3-butadiene is inhibited by adding an aniline compound having an N-nitroso group which can be easily removed with an alkaline aqueous solution to the 2,3-dichloro-1,3-butadiene.

Abstract: The formation of popcorn chloroprene polymer is prevented by adding an N-nitroso aniline compound of the formula ##STR1## wherein Ar is a phenyl group; R represents a C.sub.1.sub.-8 alkyl or a carboxymethyl group and when R is a C.sub.1.sub.-8 alkyl group, X is a hydroxyl group and n is 1 or 2; and when R is a carboxymethyl group, X is a halogen or hydroxyl group and n is 0, 1 or 2.

Abstract: Polyfluoroalkyl group-containing compounds are prepared according to the following reaction: ##EQU1## wherein R.sub.f represents perfluoroalkyl groups containing C.sub.1.sub.-23 carbon atoms, R, R' and R" represent hydrogen atoms or lower alkyl groups, and X represents bromine atoms or iodine atoms. The polyfluoroalkyl group-containing esters having the formula R.sub.f CH.sub.2 CH.sub.2 OCOR, are converted by hydrolysis to polyfluoroalkyl group-containing alcohols having the formula R.sub.f CH.sub.2 CH.sub.2 OH wherein R.sub.f is defined as above.

Abstract: A novel oil- and water-repellent composition which comprises a copolymer of at least 25 weight percent of a fluoroalkyl monomer and an alkylvinyl ether having the formula: CH.sub.2 =CH-OR wherein R represents a halogen substituted lower alkyl group.

Abstract: A recording sheet comprising a support having a developer layer thereon, the developer layer containing a phenol resin and an aqueous emulsion of an oily material and produced by admixing a coating composition containing a phenol resin and an aqueous emulsion of an oily material and coating the resulting mixture on a support.

Abstract: A process for separating a number of sheets into groups of sheets comprising coating an adhesive composition on an edge of a stack of the sheets and fanning the sheets. The adhesive composition contains a naphthalene sulfonic acid formaldehyde condensation product, a water-soluble polymer material, and a water-soluble metal salt.

Abstract: This invention provides a novel recording sheet having improved developing ability and resistance to light irradiation and which can be produced easily and economically. A developer layer coated on a support of the recording sheet contains a reacted compound between an alkali metal salt of a phenol resin and a water soluble metallic compound.

Abstract: A color-forming composition and recording sheets embodying the composition are disclosed, wherein the color-forming composition comprises: (a) a leuco dye, (b) an aromatic secondary amine or derivative thereof and (c) an organic solvent.

Abstract: A color developer is disclosed which, when contacted with a color former, is capable of forming a distinct color, the color developer comprising a metallic compound of an aromatic carboxylic acid. Suitable metals are, for example, those of the following groups of the Periodic Table: Ib, IIa, IIIb, IVb, VIa, VIIa and VIII. A recording sheet employing the color developer is also disclosed.