摘要:
Novel water soluble alpha-methyl-(2-methylpropyl)benzene acetic acid in a complexed state which is derived from the reaction between an N-vinyl-2-pyrrolidone copolymer and the alpha-methyl-(2-methylpropyl)benzene acetic acid and to the process for the preparation of said complex.
摘要:
The single stage process of reacting a lactam with an epihalohydrin in the presence of alkali metal hydroxide and between about 10-1 and about 10-4 molar concentration based on lactam of a phase transfer catalyst selected from the group of tetraalkyl ammonium hydrogen sulfate and tetraalkyl ammonium halide.
摘要:
An improved hair spray resin comprising microspheres of vinyl acetate/mono-n-C4-C5 alkyl maleate/an isobornyl acrylate terpolymer in a molar ratio of about 1:0.35-1:0.05-0.25 and a one-step suspension polymerization process for the preparation of said resin in yields above 85 %.
摘要:
Polyacetylenic recording film of improved resistance to degradation by UV light and increased sensitivity to ionizing radiation and to the process for producing said film which comprises dissolving polyacetylenic imaging crystals in n-butanol before forming a dispersion in a binder material and before coating on a polyester film base.
摘要:
A permanent hair color altering composition comprising an aqueous preparation on the basis of melanin dissolution and/or oxidation of a hair colorant dye intermediate, which contains as a swelling and penetration agent, an N-alkyl pyrrolidone wherein the alkyl group contains between 8 and 22 carbon atoms.
摘要:
Procédé de copolymérisation de vinylpyrrolidone et d'anhydride maléique en présence d'un solvant organique, d'un catalyseur et de 0,1 à 1,0 % en poids d'eau.
摘要:
Novel water soluble D-threo-(1,1'-dihydroxy-1-p-nitrophenylisopropyl) dichloroacetamide in a complexed state which is derived from the reaction between an N-vinyl-2-pyrrolidone copolymer and the D-threo-(1,1'-dihydroxy-1-p-nitrophenylisopropyl) dichloroacetamide and process for the preparation of said complex.