摘要:
A developer for a silver halide photographic photosensitive material containing at least one of monocyclic dimercaptotriazine compounds, bis-type dimercaptotriazine compounds, mercapto-1,2,4-triazine compounds and dimercaptopyrimidine compounds, and a process for developing a silver halide photographic photosensitive material using the developer. The compounds of the present invention provides excellent effect in preventing silver stains without affecting the photographic properties of the photographic material.
摘要:
A coated paper sheet provided with a coating layer formed on a paper sheet substrate and containing a pigment and a binder and optionally a pre-coated polyacrylamide-containing anionic acrylic resin layer formed between the substrate and coating layer, and having a 75° specular gloss of 70% or more, an air permeability of 4000 seconds or less, a Clark stiffness, in terms of critical strength L, of 12 cm or more in a cross direction and an internal bond strength of 200 mJ or more, exhibits high resistance to blistering, excellent printer-passing property, and high quality image-recording property and useful for both of offset printing and electrophotographic duplicating or printing.
摘要:
A method for producing high purity glycolic acid crystals, which comprises the steps of: (1) providing an aqueous glycolic acid solution (A) which has (a) a water content of from 5 to 20% by weight, (b) a calculated monomeric glycolic acid weight ratio (ratio of the total weight of the monomeric glycolic acid and the component monomeric glycolic acid of the glycolic acid condensation product to the weight of the aqueous glycolic acid solution (A)) of from 0.60 to 1.00 and (c) a monomeric glycolic acid content of from 20 to 57% by weight; (2) depositing glycolic acid crystals from the solution (A); and (3) separating the deposited glycolic acid crystals from the solution (A).
摘要:
A concentrated fixing solution which includes at least a thiosulfate, a water-soluble aluminum salt, and a compound having an absorbance of from 0.25 to 1.15 by a prescribed colorimetric method, and does not substantially contain a boron compound is disclosed. A method for processing a silver halide photographic material by using the concentrated fixing solution is also described.
摘要:
A method for producing a homopolymer or copolymer of an .alpha.-olefin is disclosed, wherein a specific catalyst is used, said catalyst comprising a solid catalyst component obtained by contacting, in the presence of a chlorinated hydrocarbon solvent, a titanium compound and an aromatic carboxylic ester with a solid component obtained by reacting a hydrocarbon solvent-soluble organomagnesium compound having an alkoxy group with a specified chlorosilane compound having an Si--H bond; an organoaluminum compound; and an alkoxysilane compound. By the method of the present invention, an .alpha.-olefin homopolymer or copolymer exhibiting high bulk density and stereoregularity can be efficiently produced under even such polymerization reaction conditions, that the polymerization temperature is high and the polymerization time is long.
摘要:
A silver halide photographic material comprising a support having provided thereon a light-sensitive silver halide emulsion layer, said silver halide photographic material contains at least one spectral sensitizing dye represented by the following formula (I): ##STR1## wherein Z.sub.11 represents a nonmetal atomic group necessary for completing a 5- or 6-membered nitrogen-containing heterocyclic ring; Q.sub.11 represents a nonmetal atomic group necessary for completing a 5-membered nitrogen-containing heterocyclic ring; R.sub.11 represents a substituted or unsubstituted alkyl group; R.sub.12 represents a straight chain or branched alkyl, alkenyl or alkynyl group each of which contains at least one carboxyl group and at least one ester bond, amido bond or ether bond; L.sub.11 and L.sub.12 each represents a methine group; m.sub.11 represents 0 or 1; m.sub.12 represents 0, 1 or 2: X.sub.1 represents a counter ion necessary for neutralizing a charge; and n.sub.1 represents a number of 0 or more necessary for neutralizing a charge in the molecule.
摘要:
This package wrapping apparatus is equipped with film hauling device.This film hauling device comprises lower and upper conveyor belts which can catch selvage of film between those belts and unwind folded rolled film uniformly.Furthermore one end of lower or upper conveyor belts can be opened or closed by hand and, also can be locked in the closed position by locking lever.So if a piece of selvage of film is cut away, it can be removed from the above film hauling device easily by opening upper conveyor belt.
摘要:
A polytrimethylene terephthalate resin comprising 60 to 100 mole % of (a) trimethylene terephthalate recurring units, and 0 to 40 mole % of (b) at least one monomer unit obtained from a comonomer copolymerizable with at least one of the monomers used for forming the recurring units, the total molar amount of (a) monomer units and (b) monomer units being 100 mole %, and the resin having the following characteristics (A) to (D): (A) an intrinsic viscosity [η] of from 0.6 to 4 dl/g; (B) a molecular weight distribution (Mw/Mn) of from 2 to 2.7; (C) a cyclic dimer content of not greater than 2% by weight; and (D) a psychometric lightness L-value of from 70 to 100 and a psychometric chroma b*-value of from −5 to 25.
摘要:
A method for producing high purity glycolic acid crystals, which comprises the steps of: (1) providing an aqueous glycolic acid solution (A) which has (a) a water content of from 5 to 20% by weight, (b) a calculated monomeric glycolic acid weight ratio (ratio of the total weight of the monomeric glycolic acid and the component monomeric glycolic acid of the glycolic acid condensation product to the weight of the aqueous glycolic acid solution (A)) of from 0.60 to 1.00 and (c) a monomeric glycolic acid content of from 20 to 57% by weight; (2) depositing glycolic acid crystals from the solution (A); and (3) separating the deposited glycolic acid crystals from the solution (A).