公开(公告)号：US3925268A

公开(公告)日：1975-12-09

申请号：US36955673

申请日：1973-06-13

Applicant: UNION CARBIDE CORP

Inventor： ROSEMUND WALTER RICHARD ,  SANDNER MICHAEL RAY ,  TRECKER DAVID JOHN

IPC: C08G18/00 ,  C08F4/00 ,  C08G18/18 ,  C08G18/40 ,  C08G18/63 ,  C08G18/14 ,  C08G18/20

CPC classification number: C08G18/632 ,  C08G18/185 ,  C08G18/4009 ,  C08G18/4072 ,  Y10S521/904

Abstract: Cellular urethane polymers essentially free of the strong, objectionable amine odor characteristic of N-ethylmorpholine, are provided by effecting the polyurethane forming reaction in the presence of beta-tert-amino nitriles. In view of their low residual odor and effectiveness in the catalysis of the waterisocyanate reaction, the beta-amino nitriles either alone or in combination with other tertiary amines, are used with particular advantage as direct replacements for N-ethyl-morpholine in the manufacture of water-blown flexible polyurethanes, both molded and free-rise, including high-resilience foam as well as foams stabilized with either organosilicone or silicon-free organic surfactants. Especially effective for the formation of flexible polyester foam stabilized with either type of surfactant are blends of the beta-amino nitrile catalyst such as, in particular, 3-(N,N-dimethylamino)propionitrile, with dimethylethanolamine or a bis(2-(N,N-dimethylamino)alkyl)-ether.

公开(公告)号：US3622482A

公开(公告)日：1971-11-23

申请号：US3622482D

申请日：1969-07-16

Applicant: UNION CARBIDE CORP

Inventor： TRECKER DAVID JOHN ,  COLOMB HENRY OCTAVE JR ,  SANDNER MICHAEL RAY

IPC: C08F2/46 ,  C08F2/50 ,  C08F8/14 ,  C08K5/105 ,  C08D1/00 ,  C08F1/16 ,  C08F45/58

CPC classification number: C08F8/14 ,  C08F2810/30 ,  C08K5/105 ,  C08L23/02

Abstract: Polymer compositions containing a minor amount of a photosensitizer-stabilizer are disclosed. The photosensitizerstabilizer serves both to sensitize or accelerate the crosslinking on irradiation and then to stabilize the polymer against further cross-linking or degradation after the cross-linking reaction has been completed. The useful compounds are the substituted and unsubstituted acylaryl esters of organic monocarboxylic acids, such as 4-acetylphenyl benzoate, 2-acetyl4-methylphenyl acetate, 2-acetyl-4-methylphenyl benzoate, etc. The polymer compositions can be used as protective coatings, fibers, films, for production of extruded and molded articles and those utilities in which polymers are customarily used.