摘要:
A contact lens contains a copolymer obtained by copolymerizing, as an indispensable feed monomer, 2 to 95 wt. % of a carboxylic acid ester monomer and 98 to 5 wt. % of a copolymerizable monomer. The carboxylic acid ester monomer is represented by the formula (I) ##STR1## wherein R.sub.1 stands for a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 1 to 12 carbon atoms, a cyclic alkyl group having 3 to 12 carbon atoms or an aryl group, and X stands for ##STR2## in which R.sub.2 and R.sub.3 each stand for a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 1 to 12 carbon atoms, a cyclic alkyl group having 3 to 12 carbon atoms or an aryl group, m and 1 being integers of from 0 to 4, at least one of R.sub.1, R.sub.2 and R.sub.3 being a group containing a fluorine atom and n being an integer of from 0 to 4.
摘要:
A ultraviolet-curable coating composition is disclosed, which comprises a specific ultraviolet-curable polyfunctional (meth)acrylate, a specific urethane-curing polymer, and a specific polyisocyanate compound in a specific compounding ratio and having incorporated therein a photo stabilizer and a photopolymerization initiator. The composition provides a coating film of large thickness in one operation and is sufficiently cured even with non-uniform ultraviolet radiation and the coating film obtained from such a composition fully satisfies various requirements, such as appearance, adhesion, and weathering resistance.
摘要:
A sliding property improving agent comprising a multi-phase structure thermosplastic resin which consists of a dispersion of 5 to 95 parts by weight of a non-polar .alpha.-olefin polymer (a) and 95 to 5 parts by weight of a vinyl polymer (b), with the dispersing polymer having a particle size from 0.001 to 10 .mu.m. A thermoplastic resin containing said resinous agent exhibits excellent mechanical strength, high anti-brasion and improved sliding properties.
摘要:
A coated vitamin C preparation for animal feed comprises a particulate core containing vitamin C and a coating material composed of one or more fine powdery lipids having a melting point of at least 40.degree. C. and containing vitamin E. The coating material is present as an agglomerated coating layer surrounding the entire circumference of each particle of the particulate core.The coated vitamin C preparation is produced by a process, which comprises a step of bringing particles of a particulate core containing vitamin C into colliding contact with particles of a coating material composed of one or more fine powdery lipids having a melting point of at least 40.degree. C. and containing vitamin E, so as to form a coating layer of agglomerated particles of the coating material surrounding the entire circumference of each particle of the core.The coated vitamin C preparation is useful as a supplement to feeds for animals, such as, livestock, poultry and marine animals, by admixing same with the feed.The coated vitamin C preparation is superior, as compared with conventional coated preparations, in the coverage performance, vitamin C isolation effect against external influences of, such as, light, heat, moisture and atmosphere, and gives better preservation of the vitamin C activity, even upon admixing with feed mixtures, and enables the high absorbability of vitamin C by organisms.
摘要:
An unsaturated polyester resin composition contains an unsaturated polyester, a vinyl monomer copolymerizable with the unsaturated polyester, a maleimide compound and a hindered phenolic compound and/or carbon black.
摘要:
A flavored konnyaku compositon contains a konnyaku gel structure having a pH value ranging within 6 to 8 substantially uniformly in its entirety and a seasoning material distributed in the gel structure substantially uniformly in its entirety. A process for preparing the flavored konnyaku composition involves solating a starting material containing powdered konnyaku, an acidic agent coated with and encapsulated in a coating agent and a seasoning material, adding an alkaline coagulating agent to the starting material to gelate the starting material to obtain a konnyaku gel structure, and heating and melting the coating agent of the acidic agent encapsulated therein present in the gel structure to thereby release the acidic agent into the gel structure.
摘要:
Fluoroalkyl derivatives which are novel compounds represented by the following general formula (I) or (II) of: ##STR1## orR.sub.1 --CH.dbd.CR.sub.2 (CF.sub.2).sub.n F (II)(wherein R.sub.1 stands for ##STR2## (where X stands for a hydrogen atom, a chlorine atom, a bromine atom, a fluorine atom, an iodine atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group or a nitro group), an aroyloxy group, or an alkyl or alkoxycarbonyl group having 1 to 20 carbon atoms, and R.sub.2 stands for a hydrogen atom or a methyl group; and n stands for an integer of from 1 to 20.) A process for the preparation of the derivative is a process comprising reacting an olefin compound and a fluoroalkanesulfonyl chloride in the presence of a metal catalyst, or a process comprising an additional alkali treatment step which follows the aforementioned process.
摘要:
A biochemical process and apparatus for use in the process are described. The process comprises reacting (a) a hydrophobic substrate with (b) a solution or dispersion comprising a hydrophilic substrate and an enzyme catalyst, by contacting through a porous thin membrane, wherein the hydrophobic and hydrophilic substrates are incompatible with each other. The apparatus comprises a main body and a porous thin membrane provided inside the main body so as to define therein at least two channels, wherein a hydrophobic substrate and a solution or dispersion comprising hydrophilic substrate and an enzyme catalyst are contacted through the thin membrane by passing them through the respective channels.
摘要:
The invention provides a pigment dispersing agent being a product obtained by reacting a component A of an amine compound having one or more active hydrogen atom per one molecule and a weight average molecular weight of 60.about.30,000 with at least one component B represented by the following general formula (I), (II) or (III): ##STR1## [wherein R.sub.1 is an alkyl group having a carbon number of 1.about.20 or a residue of aromatic monocarboxylic acid, R.sub.2 is a phenyl group, an alkyl group having a carbon number of 5.about.19, ##STR2## group (R.sub.6 is an alkyl group or an aromatic group having a carbon number of 3.about.17) or --CH.sub.2 --O--R.sub.7 group (R.sub.7 is an alkyl group or an aromatic group having a carbon number of 4.about.18), R.sub.3 is a residue of acid anhydride having a carbon number of 2.about.6, R.sub.4 is an alkylene group having a carbon number of 1.about.7, R.sub.5 is a residue of saturated aliphatic, alicyclic or aromatic monoalcohol having a carbon number of 1.about.18, X is a residue of saturated aliphatic alicyclic or aromatic diisocyanate having a carbon number of 6.about.20, each of n, l and p is an integer of 1.about.200, and m is an integer of 0.about.100 provided that 0.ltoreq.m/n, m/l, m/p.ltoreq.0.5], and a pigment dispersing agent being a product obtained by reacting the above reaction product with a component C of a polyisocyanate compound having two or more isocyanate groups.
摘要:
A contact lens article comprises a resin obtained by copolymerizing starting monomer components containing a silicon-containing compound (A) represented by the formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group, X.sub.1 and X.sub.2 each represent a methyl group or ##STR2## l represents 0 or 1, m represents an integer of 1 to 3 and n and p each represent an integer of 0 to 3; a fluorine-containing compound (B) represented by the formula (II) of: ##STR3## wherein at least one of R.sub.2 and R.sub.3 represents a straight chain or branched chain fluoroalkyl group represented by --C.sub.h H.sub.k F.sub.2h+l-k in which h represents an integer of 2 to 18, k represents an integer of 1 to 2 multiplied by h and when one of R.sub.2 and R.sub.3 is --C.sub.h H.sub.k F.sub.2h+l-k, the other of R.sub.2 and R.sub.3 represents an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 2 to 12 carbon atoms or a cycloalkyl group having 3 to 12 carbon atoms; and a radical polymerizable vinyl monomer.