摘要:
A naphthalocyanine derivative of formula (I): wherein M is Si, Ge or Sn; the groups Y are the same or different and each is R 2 O or R 3 R 4 R 5 SiO; k,ℓ, m and n are the same or different and each is zero or an integer of 1 to 4, provided that (k + t + m + n) is 1 or greater; the groups R 1 are the same or different; and Ri, R 2 , R 3 , R 4 and R 5 are the same or different and each is cycloalkyl, cycloalkylalkyl, hydrogen, aryl, alkoxy, aryloxyl straightchain alkyl, branched chain alkyl or alkenyl; provided that at least one of R 1 , R 2 , R 3 , R 4 , and R 5 is cycloalkyl or cycloalkylalkyl is an effective substance for forming a recording layer on a substrate of an optical recording medium having high sensitivity with good properties.
摘要:
Novel naphthalocyanine derivatives of formula (I) wherein k, I, m and n, which may be the same or different, are zero or integers of 1 to 4, k + I + m + n being an integer of 1 or more; the groups R 1 which may be the same or different when k + I + m + n > 1, are alkyl substituted alkyl, or aryl; M is Si, Ge or Sn; and the groups Y, which may be the same or different, are aryloxy, alkoxy, trialkylsiloxy, triarylsiloxy, trialkoxysiloxy, triarylkyloxysiloxy, trityloxy or acyloxy are useful for forming a recording layer in an optical recording medium.
摘要:
The present invention provides a process for producing printed circuit boards which comprises the steps of
(a) roughening a surface of a copper layer (2) formed on an insulating board (1), (b) coating the roughened surface of copper layer (2) with a photo-resist layer containing a sublimable copper-corrosion inhibitor, exposing the resist layer selectively to actinic rays according to a circuit pattern to form, and developing the resulting resist layer, thereby forming plating-resist coats (4) on circuit-negative pattern portions of the copper layer (2), (c) heat-treating the plating-resist coats (4), (d) plating chemically the circuit-corresponding portions with copper (5), (e) removing the plating-resist coats (4), and (f) removing the copper layer (2) except the circuit-corresponding portions thereof.
摘要:
Disclosed are an electrophotographic plate comprising a photoconductive layer containing an organic photoconductive substance on an electroconductive support, characterized in that said photoconductive layer has a film containing as the organic photoconductive substance a metal naphthalocyanine derivative represented by the formula (I): wherein M represents germanium or tin; L and Lʹ each independently represent a halogen, a hydroxyl group, an alkyl group, an alkoxy group or a siloxy group of the formula R₁R₂R₃SiO- (wherein R₁, R₂ and R₃ each independently represent a hydrogen atom, an alkyl group, an alkoxy group or an aryl group),
a metal naphthalocyanine derivative defined above and a process for producing the same.
摘要:
There are disclosed a novel naphthalocyanine derivative represented by the general formula [I] or [II] shown below, a process for preparing said derivative, an optical information recording medium using said derivative, and a process for preparing thereof: wherein M is a metal, metal oxide, metal hydroxide and the like, R 1 is an alkyl group of 1 - 22 carbon atoms, n is an Integer of 1 to 4, and Y 1 and Y 2 aryloxy group and the like.