[EN] ORGANOSILANE, IONIC ORGANOSILANE, MEMBRANE COMPOSITION, AND MEMBRANE<br/>[FR] ORGANOSILANE, ORGANOSILANE IONIQUE, COMPOSITION DE MEMBRANE ET MEMBRANE
申请人:3M INNOVATIVE PROPERTIES CO
公开号:WO2020254930A1
公开(公告)日:2020-12-24
A dihaloorganosilane is represented by the formula (I): Each X independently represents C1, Br, or I. Each Ar1 independently represents a phenylene group optionally substituted by 1 to 4 alkyl groups selected from methyl or ethyl. Each R1 independently represents an alkylene group having from 2 to 18 carbon atoms. Each R2 independently represents methyl or ethyl. Each R3 independently represents an alkylene group having from 1 to 18 carbon atoms. Each R4 independently represents an alkylene group having from 2 to 18 carbon atoms, and n is an integer in a range of 0 to 5, inclusive. Ionic organosilanes preparable from the dihaloorganosilanes are represented by the formula (II): Membrane compositions and membranes containing the ionic organosilanes are also disclosed.
Photographic emulsions and elements capable of forming direct-positive images
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0050558A2
公开(公告)日:1982-04-28
Silver halide emulsions are disclosed containing silver halide grains capable of forming an internal latent image. Incorporated in the emulsions as a nucleating agent is a heterocyclic compound having an arylaminovinylene or aryloxyvinylene substituent, thereby permitting a direct-positive image to be formed on imagewise exposure and photographic processing. Such emulsions can be coated on photographic supports to prepare photographic elements.
Use of pyrylium or thiapyrylium compounds as biological stains
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0112552A2
公开(公告)日:1984-07-04
A method for distinguishing cells in a biological sample is disclosed. The method is of the type wherein the cells are stained with a dye and is characterized in that the dye is a pyrylium or thiapyrylium compound.