Accession Number : AD0288088

Title :   SYNTHESIS OF LOW TEMPERATURE CHEMICAL RESISTANT URETHANE ELASTOMERS

Corporate Author : WYANDOTTE CHEMICALS CORP MICH

Report Date : 01 OCT 1962

Pagination or Media Count : 1

Abstract : The preparation of urethane-urea elastomers was investiga ed. A statistically designed set of experiments was completed investigating 5 variables at 2 levels. Two aromatic diamines were compared at two levels of amine to hydroxyl ratio. Two aromatic diisocyanates at 2 levels of concentration were also compared. Two polyols of 1500 equivalent weight were utilized to round out the 5 variables. These polyols are PLURACOL TP-4542 and Teracol 30. The use of ortho dichlorobenzidine (DCB) at a 1.5 NH2/OH ratio in combination with tolylene diisocyanate and the polypropylene-ethylene ether triol came the closest to meeting the Army specification for an oil resistant rubber with good low temperature flexibility. (Author)

Descriptors :   *ELASTOMERS, *UREA, *UREIDO ( N-C( O)-N, ABSORPTION, AGING (PHYSIOLOGY), AMIDES, ANILINES, CHEMICAL REACTIONS, CHEMICALS, CHLORIDES, ELASTIC PROPERTIES, ETHERS, ETHYLENES, HARDNESS, HYDROXIDES, ISOCYANIC, LOW TEMPERATURE RESEARCH, MOISTURE, OILS, ORGANIC COMPOUNDS, PHYSICAL PROPERTIES, POLYMERS, PROPENES (3 C), STATISTICAL ANALYSIS, SYNTHESIS, TENSILE PROPERTIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE