公开(公告)号：ITMI913412D0

公开(公告)日：1991-12-19

申请号：ITMI913412

申请日：1991-12-19

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： LEE CHINSOO ,  BASSETT DAVID ROBINSON

IPC: C08L65/04 ,  C07C1/32 ,  C07C13/70 ,  C07C17/00 ,  C07C17/26 ,  C07C25/22 ,  H05K3/28 ,  C08

Abstract: A process is provided for the preparation of a mixture of parylene dimers wherein the distribution of dimers within the mixture is predetermined by the proper selection of halogenated and non-halogenated 2,2-paracyclophane starting material. Since the dimers are free of alpha-halogens, the formation of environmentally undesirable acid halides during the deposition of parylene films and coatings is avoided. Since the dimers are useful in the preparation of inert, transparent, conformal coatings of parylene, desirable chemical and/or physical properties can be imparted to such coating by formation of a dimer mixture of a predetermined composition. The parylene film properties, composition and deposition conditions will be different by varying dimer distribution.

公开(公告)号：CA2064147A1

公开(公告)日：1992-09-28

申请号：CA2064147

申请日：1992-03-26

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： LEE CHINSOO ,  HOY KENNETH L

IPC: B01J19/00 ,  B01J3/00 ,  B05D3/00 ,  C08F20/26 ,  C08F20/28 ,  C08G18/00 ,  C08G18/08 ,  C08G59/18 ,  C09K15/02 ,  C09K15/00

Abstract: A process for inhibiting chemical reactions of a fluid functionally reactive organic material by mixing it with supercritical fluid ("SCF") or near supercritical fluid, especially carbon dioxide maintained under supercritical fluid conditions. The process includes the ability to restrain a chemical reaction that occurs otherwise between functionally compatible organic molecules by the inclusion of supercritical fluid, particularly CO2, with the molecules, so that the reaction can be made to occur according to a predetermined but different from normal pattern.

公开(公告)号：CA2002991A1

公开(公告)日：1990-05-28

申请号：CA2002991

申请日：1989-11-15

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： HOY KENNETH L ,  TAYLOR GLENN A ,  LEE CHINSOO

IPC: C08G18/65 ,  C08G18/08 ,  C08G18/32 ,  C08G18/40 ,  C08G18/66

Abstract: A method is described for producing dispersions of polyurea and the like in polyols of increased stability by polmerizing an amine and an isocyanate in the presence of an aminoalcohol, typically an aminopolyol, having the following formula: wherein A and A' are individually connective atoms which may be same or different, and are selected from the group consisting of carbon and oxygen or combinations thereof with hydrogen atoms or the like satisfying the valences; B is a member selected from the group consisting of nitrogen, NR, R being alkyl or aryl, or CR', R' being hydrogen, alkyl or aryl; D is a member selected from the group consisting of ?(OCaH2a)? and wherein a has a value of one to four; X is a member selected from the group consisting of OH, NH2 or H; X' is a member selected from the group consisting of H or NHR' where R' is hydrogen, alkyl or aryl; n and d are individually integers of 0 to 10 and the sum of n and d is at least one and does not exceed 10; S is either 0 or 1; y is an integer of 0 to 4; and m is an integer of at least about 16, with the proviso that when B is nitrogen and either n or d is zero, X and X' are not both H. The dispersions are useful for the production of polyurethane foams. D-15929