STABILIZERS FOR CELLULAR POLYURETHANES

• Main Authors: HOLTSCHMIDT H,DT, ROEGLER M,DT, DAHM M,DT, OERTEL G,DT
• Format: Patent
• Language: English
• Published: 12.06.1973
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

1,252,647. Polyurethane foams. FARBENFABRIKEN BAYER A.G. 28 Feb., 1969 [1 March, 1968], No. 10838/69. Headings C3C and C3R. Polyurethane foams are prepared from polyesters and polyisocyanates in the presence of blowing agents and non-ionic foam stabilizers of the general formula:- wherein R is an alkyl, alkenyl, cycloalkyl, aralkyl or aryl radical containing 6 to 20 carbon atoms, A is an alkylene or cycloalkylene radical containing 2 to 10 carbon atoms, X is an oxygen atom or 2 hydrogen atoms, n is an integer from 1 to 30, B is a radical of the formula wherein R 1 represents a substituted or unsubstituted alkylene or arylene radical having 2 to 20 carbon atoms, R 2 is a hydroxyl group or an alkoxy or aryloxy group having 1 to 6 carbon atoms, R 3 is an alkyl, alkenyl, cycloalkyl, aralkyl or aryl radical having 1 to 20 carbon atoms and D represents the radical of a polyether formed from 30 to 100% ethylene oxide and 0 to 70% of at least one other monoepoxide, having a M.W. of 200 to 10,000. Numerous non-ionic stabilizers and methods for preparing them are illustrated. Typical stabilizers are reaction products of (a) a polyether isocyanate prepared from a reaction product of n-butanol, ethylene oxide and propylene oxide with excess toluylene diisocyanate and (i) 5-(2- hydroxyethyl) oleylamine, (ii) the polyether derived from self-condensation of stearic acid di.(2-hydroxyethyl)amide, (iii) the polyester formed from N-oleyl-diethanolamine and adipic acid, (iv) the polyether prepared by selfcondensation of N-oleyl-diethanolamine, (v) the polyether prepared by self-condensation of N- dodecyldiethanolamine, (vi) N,N1 - di-octadecenoyl-N-(2-hydroxyethyl)-ethylene diamine, (vii) oleic acid diethanolamide, (viii) N - di-(2- hydroxyethyl)-9-aminoheptadecane, (ix) N- dodecyl-diethanolamine or (b) a commercial reaction product of a fatty acid amide and ethylene oxide.