公开(公告)号：US2853510A

公开(公告)日：1958-09-23

申请号：US59731856

申请日：1956-07-12

Applicant: UNION CARBIDE CORP

Inventor： MONTAGNA AMELIO E ,  STOUT ELDON C

CPC classification number: C07C255/13

公开(公告)号：CA657100A

公开(公告)日：1963-02-05

申请号：CA657100D

Applicant: UNION CARBIDE CORP

Inventor： STOUT ELDON C ,  LEIS DONALD G

公开(公告)号：CA1047686A

公开(公告)日：1979-01-30

申请号：CA254799

申请日：1976-06-14

Applicant: UNION CARBIDE CORP

Inventor： DUFFY ROBERT D ,  STOUT ELDON C

IPC: C08G18/48 ,  C08J9/22 ,  C08G18/14

Abstract: This invention relates to novel polyurethane prepolymers which consist essentially of the reaction product of polyoxyalkylene polyol having a critical oxyethylene content and an isocyanate constituent, the reaction product having a defined level of free NCO. Particularly useful prepolymers are produced using a tolylene diisocyanate residue. The prepolymers provided have outstanding utility for rebonding polyurethane foams for applications such as, for example, carpet underlays and allow significant reductions in the adhesive level used in forming such rebonded foams and in the demolding cure times in comparison with presently used prepolymer adhesives. The prepolymers are also useful for applications in which polyurethane prepolymers are used presently such as, for example, in hydrophilic foams.

公开(公告)号：CA865222A

公开(公告)日：1971-03-02

申请号：CA865222D

Applicant: UNION CARBIDE CORP

Inventor： CRITCHFIELD FRANK E ,  HYRE JOHN E ,  STOUT ELDON C