摘要:
A production method of an optical film is provided including: a process of preparing a solution comprising polyvinyl alcohol or modified polyvinyl alcohol; a process of casting the solution by using a tapering die so as to prepare a film differing in thickness between the right side and the left side; and a process of stretching the film at a speed differing between the right side and the left side at an angle of 10 to 80 degrees with the machine direction.
摘要:
A method for producing colored and exactly spherical fine-grains of polymer by carrying out the suspension and polymerization of ethylenic unsaturated monomers containing a pigment in water under the presence of a suspension stabilizer, wherein an inorganic pigment treated with silane-coupling agent is used as said pigment. According to the present invention, the pigments are homogeneously dispersed in said exactly spherical fine-grains of polymer and a loss of color is prevented.
摘要:
A method for producing a matt paint which comprises the steps of choosing a particle size of 1 to 100 .mu.m from exactly spherical acrylic particles colored by pigment, and blending them into a paint vehicle. According to the present invention, a colored film of the matt paint can be formed, and the surface of the film shows a soft feel without stickiness.
摘要:
A drafting film comprising a hydrophobic support and a matte layer formed thereon, said matte layer comprising silicon dioxide as a matting agent and a mixture of polymethyl methacrylate or a copolymer thereof and nitrocellulose. The drafting film show excellent adaptability for writing or drawing and revising or erasing.A wash-off type photographic film is also provided by forming a wash-off silver halide photosensitive emulsion layer on the drafting film.
摘要:
An anti-halation layer for photographic materials comprising at least one first binder which is swollen by an aqueous alkaline solution and comprises about 10 to about 25% by weight of alkyl acrylate units, 52 to 65% by weight of alkyl methacrylate units and about 18 to about 30% by weight of suitable acid monomer units, and at least a second binder agent which is soluble in an alkaline aqueous solution but which can withstand a strongly alkaline preliminary bath and is readily stripped away only at a successive rinsing operation.
摘要:
Composite spherical polymer particles contain a nanoparticulate pigment having an average primary particle size of from 0.1 to 0.005 μm, a high molecular dispersant having adsorptive property to the nanoparticulate pigment, and a (meth)acrylic resin. The nanoparticulate pigment is enclosed in a dispersed state in the high molecular dispersant and (meth)acrylic resin. The content of the nanoparticulate pigment ranges from 5 to 70 wt % based on the composite spherical polymer particles. The composite spherical polymer particles have an average particle size of from 1 to 20 μm. A production process of the composite spherical polymer particles and cosmetics containing the composite spherical polymer particles are also disclosed.
摘要:
The present invention relates to a cellulose acylate film having a high modulus of elasticity and a high surface hardness. The cellulose acylate film of the present invention is characterized by containing 1 vol % to 99 vol % of a metal oxide having an average particle size of 1 nm to 400 nm. The metal oxide used here is preferably a metal oxide having a Mohs hardness of at least 7, and specific examples thereof include aluminum oxide and silicon dioxide. This metal oxide may be subjected to a surface treatment. Furthermore, a functional thin film such as a hardcoat layer may be formed on the cellulose acylate film containing the metal oxide.
摘要:
A cellulose ester film contains a phosphoric ester as a plasticizer. The film further contains an aromatic carboxylic ester represented by the formula [I]. ##STR1## in which n is 3, 4, 5 or 6; R is an alkyl group or an alkenyl group, each of which may have one or more substituent groups; the benzene ring may have one or more substituent groups other than the groups represented by --COOR; and the groups represented by --COOR may be different from each other. A process for preparation of the film is also disclosed.
摘要:
A fine porous membrane having a pore size distribution in the thickness direction and having a layer having a minimum pore size in the interior thereof, wherein the ratio of maximum pore size to the average pore size, each as determined according to ASTM-316-80, is not more than 1.8. The fine porous membrane is produced by a process comprising casting a film-forming solution, comprising a polymer in a solvent having incorporated therein a swelling agent and a non-solvent, on a casting carrier while being in a solution state, directing air having a temperature of from 15.degree. to 60.degree. C. and a relative humidity of from 10 to 80% onto the surface of the cast film at a velocity of from 0.2 to 4 m/sec for a period of from 2 to 17 seconds to cause coacervation of the cast film while controlling the evaporation loss of the solvent from the cast film and the absorption of non-solvent vapors in the air, dipping the case film in a coagulating bath to cause phase separation and coagulation to form a fine porous membrane, and stripping off the membrane from the casting carrier. The fine porous membranes has a low filtration resistance, a great filtration flow rate, a high efficiency in trapping fine particles and bacteria, and a long life.
摘要:
A retouchable mat film comprising a hydrophobic support which has formed thereon a mat layer containing silicon dioxide as a matting agent is disclosed. The mat layer further includes a mixture of poly(methyl methacrylate) or a copolymer containing at least 80 wt % of methyl methacrylate and a hydrophilic polymer as a binder. This mat film withstands several retouching operations in ink.