Microcellular polyurethane foams based on aromatic polyamines and propoxylated aniline
Abstract
Abstract A MICROCELLULAR POLYURETHANE FOAM PREPARED BY REACTING IN THE PRESENCE OF AN ORGANOMETALLIC CATALYST: (1) TOLUENE DIISOCYANATE; (2) A POLYOL SELECTED FROM THE GROUP CONSISTING OF: (A) ORGANIC TRIOLS HAVING MOLECULAR WEIGHTS OF FROM ABOUT 1,500 TO ABOUT 6,500 AND (B) MIXTURES OF (I) ORGANIC TRIOLS HAVING MOLECULAR WEIGHTS OF FROM ABOUT 1,500 TO ABOUT 6,500 AND (II) ORGANIC DIOLS HAVING MOLECULAR WEIGHTS OF FROM ABOUT 400 TO ABOUT 2,800; (3) AN AROMATIC AMINE HAVING THE FORMULA: ((H2N-PHENYL)-CH2-((H2N-PHENYLENE)-CH2)N-)-ANILINE WHERE N EQUALS FROM ABOUT 0.1 TO ABOUT 0.3; AND (4) A PROPOXYLATED ANILINE HAVING THE FORMULA: PHENYL-N(-CH2-CH(-CH3)-OH)2 PROPORTIONS OF (1) TO (2) TO (3) BEING SUCH THAT; (A) THE RATIO OR -NCO TO ACTIVE HYDROGEN ATOMS IS IN THE RANGE OF FROM 1.0:1.0 TO 1.2:10; (B) THE RATIO OF -NH2 GROUPS IS IN THE RANGE OF FROM 0.6:1.0 TO 1.0:1.0, AND (C) THE WEIGHT RATIO OF AROMATIC AMINE TO THE SUM OF AROMATIC AMINE AND PROPOXYLATED ANILINE IS FROM 0.45:1.0 TO 0.95:1.0.
Inventors
- 👤 Richard D Rhodes Jr
- 👤 Kirby E L Flanagan
Bibliographic Details
Claims Analysis
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