公开(公告)号：FI894599A

公开(公告)日：1990-04-02

申请号：FI894599

申请日：1989-09-28

Applicant: HOECHST AG

Inventor： PRASS WERNER ,  SCHEUNEMANN UDE

IPC: B05D1/20 ,  B32B27/00 ,  C08G18/32 ,  C08G18/38 ,  C08G18/73 ,  C08G18/76 ,  C08G75/18 ,  C08J5/18 ,  C08G

Abstract: A polyurea of the general formula where X and Y are. independently of one another, a divalent radical whose chain contains in each case at least two carbon atoms, and A and B are, independently of one another, H or (C1-C26)alkyl, and n is an integer greater than 4, which polyurea contains at least one (C6-C26) alkyl group per repeating unit, is prepared by reacting the diamine NHA-X-NHB with roughly the equimolar amount of a diisocyanate OCN-Y-NCO. The polyurea is suitable for preparing ordered monomolecular LB films on a base (film-substrate-system). For this purpose it is dissolved in a volatile organic solvent which is not miscible with water, the solution is spread at the water/air interface, and the layer formed is compressed after the solvent has evaporated and it is transferred to a solid layer base by the Langmuir-Blodgett technique.

公开(公告)号：FI894599A0

公开(公告)日：1989-09-28

申请号：FI894599

申请日：1989-09-28

Applicant: HOECHST AG

Inventor： PRASS WERNER ,  SCHEUNEMANN UDE

IPC: B05D1/20 ,  B32B27/00 ,  C08G18/32 ,  C08G18/38 ,  C08G18/73 ,  C08G18/76 ,  C08G75/18 ,  C08J5/18 ,  C08G

Abstract: A polyurea of the general formula where X and Y are. independently of one another, a divalent radical whose chain contains in each case at least two carbon atoms, and A and B are, independently of one another, H or (C1-C26)alkyl, and n is an integer greater than 4, which polyurea contains at least one (C6-C26) alkyl group per repeating unit, is prepared by reacting the diamine NHA-X-NHB with roughly the equimolar amount of a diisocyanate OCN-Y-NCO. The polyurea is suitable for preparing ordered monomolecular LB films on a base (film-substrate-system). For this purpose it is dissolved in a volatile organic solvent which is not miscible with water, the solution is spread at the water/air interface, and the layer formed is compressed after the solvent has evaporated and it is transferred to a solid layer base by the Langmuir-Blodgett technique.