摘要:
An alicyclic (meth)allyl ester monomer obtained by a specific production process. An alicyclic (meth)allyl ester compound for plastic lenses, which can be obtained by a simple and easy production process and which can endure a long-term storage, is produced using the monomer, and a plastic lens is obtained using the compound.
摘要:
Provided are a vinyl chloride-based copolymer, as a secondary particle in which primary particles are assembled, which may exhibit excellent mechanical properties and transparency as well as excellent plasticity by having an average pore diameter of 100 nm or less and a porosity of 40 vol % or less, including 65 wt % to 97 wt % of a vinyl chloride-based monomer-derived repeating unit; and 3 wt % to 35 wt % of cis and trans isomers of an unsaturated fatty acid ester-derived repeating units, and including the repeating units respectively derived from the cis and trans isomers of the unsaturated fatty acid ester in a weight ratio of 60:40 to 99:1, and a method of preparing the same.
摘要:
An alicyclic (meth)allyl ester monomer obtained by a specific production process. An alicyclic (meth)allyl ester compound for plastic lenses, which can be obtained by a simple and easy production process and which can endure a long-term storage, is produced using the monomer, and a plastic lens is obtained using the compound.
摘要:
The invention relates to a copolymer that can be used as wetting agent and dispersant and contains i) 40-73 mole percent of a base structural unit (A) and ii) 27-60 mole percent of a substituted dicarboxylic acid derivative structural unit (B), the structural unit (B) containing species having a bisamide structure and species having quaternized amino groups.
摘要:
A plastic lens composition having a low viscosity and capable of yielding a cured material having a high refractive index and a small specific gravity, a plastic lens by curing the composition, and a method for producing the plastic lens. A plastic lens composition containing a bromine-containing (meth)allyl ester-based compound is low in viscosity as compared with conventional plastic lens compositions and a cured material of the composition has a high refractive index and a low specific gravity.
摘要:
A plastic lens composition having a low viscosity, a plastic lens by curing the composition, and a method for producing the plastic lens are disclosed. The plastic lens composition contains a bromine-containing (meth)allyl ester-based compound and exhibits low viscosity and the cured composition has a high refractive index of 1.58 or more and a low specific gravity of 1.40 or less.
摘要:
A polymerizable composition is described, which composition comprises a major amount of a polyol(allyl carbonate) monomer, e.g., diethylene glycol bis(allyl carbonate) monomer, and a minor amount of a radically polymerizable second monomer represented by the general formula, 1 wherein R2 is a polyvalent linking group that is free of urethane linkages, e.g., R2 may be a residue of a polyisocyanate, such as isophorone diisocyanate; R3 is a residue of a material having a single hydroxy group and at least one allyl group, R3 being free of urethane linkages, e.g., R3 may be a residue of a poly(alkylene glycol) allyl ether, such as poly(1,2-propylene glycol) allyl ether; and j is a number from 2 to 4. The second monomer may also be present in the composition in an amount at least sufficient such that a polymerizate, e.g., a plus ophthalmic lens, obtained from the composition is substantially free of tinting defects, e.g., ferns and/or moons.
摘要:
A diallyl aromatic dicarboxylate derivative of the formula ##STR1## wherein Y is hydrogen atom or perfluoroalkenyl group having 6 to 14 carbon atoms, is a novel compound. The compound (1) is a starting material for a prepolymer containing a repeating unit derived from diallyl aromatic fluorine-containing dicarboxylate and represented by the formula ##STR2## wherein X is prefluoroalkenyl group having 6 to 14 carbon atoms. Further, the present invention provides a curable resin composition which comprises a prepolymer having at least one carbon-carbon double bond in the molecule and diallyl aromatic fluorine-containing dicarboxylate represented by the formula ##STR3##
摘要:
New curable monomeric aromatic imidodicarboxylic acid diallyl esters, such as 4-allyloxycarbonyl-N-(allyloxycarbonylmethyl)phthalimide, 1,2-ethylene bis(4-allyloxycarbonylphthalimide), or N,N'-bis(allyloxycarbonylmethyl) pyromellitimide. When heated in the presence of a free radical initiator, these monomers give cured polymers having very superior mechanical strength, thermal stability, chemical resistance and electrical properties. If this polymerization is stopped before the reaction mixture is gelled, prepolymers can be obtained. The cured polymers are especially useful as electronics materials and engineering plastics.
摘要:
The invention relates to a copolymer that can be used as wetting agent and dispersant and contains i) 40-73 mole percent of a base structural unit (A) and ii) 27-60 mole percent of a substituted dicarboxylic acid derivative structural unit (B), the structural unit (B) containing species having a bisamide structure and species having quaternized amino groups.