Abstract:
LIGHT FAST POLYURETHANE IONOMERS ARE PREPARED FROM THE USUAL STARTING MATERIALS FOR THE PREPARATION OF POLYURETHANES AND 2 - ALKYL - 2-DIALKYLAMINOMETHYL-1,3-PROPANE DIOLS AND QUATERNISING OR NEUTRALISING AGENTS. THE NOVEL POLYURETHANE IONOMERS MAY BE USED FROM THEIR SOLUTIONS OR AS AQUEOUS DISPERSIONS FOR COATING OR IMPREGNATING OF VARIOUS SUBSTRATES.
Abstract:
A polyurethane which is adapted to be dispersed in water without an emulsifier is prepared by reacting an organic compound having reactive hydrogen atoms determinable by the Zerewitinoff method with an organic diisocyanate having a side chain which contains repeating (O-CH2-CH2) groups. Latices prepared from the polyurethane may be used to prepare films and coatings having improved physical properties.
Abstract:
New anthraquinone compounds of the formulae
AND
IN WHICH X1 denotes a hydroxyl or amino group, X2 denotes a hydroxyl, amino, alkylamino, cycloalkylamino, arylamino, acylamino, alkylmercapto or arylmercapto group, Y represents hydrogen, halogen, alkylmercapto or arylmercapto radicals, R represents an alkyl radical, Hal represents chlorine, bromine or iodine and Z represents hydrogen or an acyl radical, AS WELL AS THEIR MANUFACTURE AND USE FOR DYEING AND PRINTING SYNTHETIC FIBRE MATERIALS.
Abstract:
A process is provided for the preparation of aqueous dispersions of polymers of olefinically unsaturated monomers in the presence of emulsifiers capable of forming free radicals which emulsifiers contain urethane groups, characterized in that 5 TO 95 PERCENT BY WEIGHT OF AT LEAST ONE POLYMERIZABLE OLEFINICALLY UNSATURATED MONOMER IS POLYMERIZED IN THE PRESENCE OF 5 TO 95 PERCENT BY WEIGHT OF ONE OR MORE OLIGOURETHANE SALTS HAVING AN AVERAGE MOLECULAR WEIGHT OF 1,500 TO 20,000 (PREFERABLY 2,000 TO 10,000) AND A TENSILE STRENGTH OF LESS THAN 20 KG WT/CM2, WHICH SALTS HAVE BEEN PREPARED FROM WATERINSOLUBLE OLIGOHYDROXY COMPOUNDS HAVING A MOLECULAR WEIGHT OF 400 TO 5,000.
Abstract:
Salts of 3-hydroxy-2-hydroxymethyl-propane sulfonic acid-1 and a process for the preparation thereof by reaction of 2-methylenepropane-1,3-diol with a bisulfite under special conditions, the use of these salts as co-condensable substances as monomers for polyurethanes and as valuable intermediate products for other organic syntheses are disclosed.
Abstract:
Thermoplastic polyurea powders and sedimenting aqueous solutions of the same wherein the powders have A. AN AVERAGE PARTICLE DIAMETER OF FROM 10 TO 1,000 Mu , B. A MELTING RANGE OF FROM 100* TO 180*C., c. a urea and, optionally, urethane group content of from 10 to 30% by weight, with the proviso that the urea group content is at least about 5%, and D. AN IONIC GROUP CONTENT OF FROM 0.01 TO 0.15 MILLIEQUIVALENTS PER GRAM; PREPARED BY REACTING (1) POLYURETHANES WHICH CONTAIN FREE NCO groups and ionic groups with (2) primary and/or secondary aliphatic diamines and/or dicarboxylic acid-bis-hydrazides at an NH to NCO ratio of from 0.1 to 0.95 and in the presence of water. The powders are useful for finishing textiles, for coatings, as binders or as auxiliary agents in the paper industry, and the like.