Abstract:
A PROCESS IS PROVIDED FOR THE PRODUCTION OF POLYURETHANE ELASTOMERS BY REACTING HIGHER MOLECULAR WEIGHT HYDROXY COMPOUNDS WHICH HAVE A MOLECULAR WEIGHT OF 800 TO 2500, DIISOCYANATES AND LOW MOLECULAR WEIGHT COMPOUNDS WHICH HAVE A MOLECULAR WEIGHT OF UP TO 400 AND WHICH CONTAIN AT LEAST TWO HYDROGEN ATOMS REACTIVE WITH ISOCYANATES, CHARACTERIZED IN THAT THE HIGHER MOLECULAR WEIGHT HYDROXY COMPOUNDS ARE CONDENSATION PRODUCTS OF 1,6-HEXANE DIOL, ADIPIC ACID AND DIARYL CARBONATE.
Abstract:
Polymers and Copolymers of olefinically unsaturated monomers with radiation-crosslinkable vinylene carbonyl groups (-CH CH-CO) or vinylene carbonyl vinylene groups (-CH CH-CO-CH CH-) are obtained by radicalic polymerization in heterogeneous phase at a temperature between about 0*-150* C.
Abstract:
Noncellular polyurethane plastics are prepared from organic compounds having hydroxyl groups and a molecular weight from about 800 to about 3,000, organic diisocyanates and 2,3dibromobut-2-ene-1,4-diol. The polyurethane elastomers due to their improved chemical and thermal stability are eminently suitable in the production of molded articles.
Abstract:
1. A PROCESS FOR THE PREPARATION OF POLYETHER/POLYESTER BLOCK COPOLYMERS WHICH COMPRISES CONDENSING, IN THE PRESENCE OF AN ETHERIFICATION CATALYST AT A TEMPERATURE 130*C.-220*C., HYDROXYL SATURATED POLYESTERS AND HYDROXYL POLYESTERS EACH CONTAINING FREE HYDROXYL GROUPS, SAID POLYESTER HAS A MOLECULAR WEIGHT OF 250-3000 AND SAID POLYETHER HAS A MOLECULAR WEIGHT OF 500-3000, THE MOLAR RATIO OF POLYESTER TO POLYETHER BEING FROM ABOUT 5:1 TO ABOUT 1:5.
Abstract:
THE INVENTION RELATES TO THE USE OF BISBENZAZIMIDE COMPOUNDS AS BLOWING AGENTS FOR THE PRODUCTION OF CELLULAR AND POROUS ARTICLES FROM ACRYLONITRILE, BUTADIENE AND STYRENE COPOLYMERS. THE BLOWING AGENTS DO NOT LIBERATE ANY CORROSIVE, DISCOLORING, MALODOROUS OR TOXIC DECOMPOSITION PRODUCTS.
Abstract:
BONDING OF RUBBER TO TEXTILES OR METALS UTILIZING A VULCANIZABLE RUBBER CONTAINING A FORMALDEHYDE DONOR, A FORMALDEHYDE ACCEPTOR AND A FINELY DISPERSED SILICA FILLER.
Abstract:
Polymerisable anthranilic acid esters are obtained by heating acrylic or methacrylic acid esters containing hydroxyl groups with isatoic anhydride in an organic inert medium at temperatures of from 30* to 150*C in the presence of strong basis. They may be polymerised alone or in combination with other monomers by the methods of bulk solution suspension or emulsion polymerisation. Cross-linkage is possible even with the aid of polyisocyanates, formaldehyde and formaldehyde resins.
Abstract:
1354523 Alkyl diaminobenzoates BAYER AG 21 May 1971 [27 May 1970] 16191/71 Heading C2C [Also in Division C3] Diamines of the general formula (in which R is alkyl) are prepared by esterification of 3,5- or 2,4-dinitrobenzoic acid followed by reduction of the intermediate alkyl dinitrobenzoate with Raney nickel or with iron. In Specific examples the preparation of methyl- 3,5 - diaminobenzoate, isobutyl - 3,5 - diaminobenzoate, 2 - ethylhexyl - 3,5 - diaminobenzoate, stearyl - 3,5 - diaminobenzoate and methyl-2,4-diaminobenzoate is described.