摘要:
A polymer composition containing a physiologically active substance which can be released at a controlled rate is prepared by contacting one or more polymerizable monomers with the physiologically active substance, making the monomers into a specific shape and then irradiating the shaped article with light or an ionizing radiation at a low temperature below room temperature to polymerize the polymerizable monomers.
摘要:
Enzymes and/or bacteria cells are immobilized by forming an aqueous mixture of enzymes and/or bacteria cells and a hydrophobic, vitrifiable monomer in an amount of at least 76% by weight of all monomers present, and irradiating the mixture by means of ionizing radiation at a temperature less than -10.degree. C. to polymerize the monomer.
摘要:
Enzymes are adsorbed on an adsorbent powder in an aqueous medium and a water-miscible monomer is added thereto, and said monomer is polymerized to form a porous gel lump through which a substrate solution can freely pass. The thus formed enzyme composition has long-lasting activity and thus the enzymes can be easily separated from the reaction system and can be used repeatedly.
摘要:
A process for producing a composition containing insolubilized enzyme and/or insolubilized bacterial cells which comprises (i) the step of mixing (a) an aqueous solution of enzyme and/or an aqueous dispersion of bacterial cells, (b) at least one porous adsorbent and (c) at least one vitrifiable monomer.
摘要:
A physiologically active substance controlled release composite composition is prepared by a process which comprises the steps of:adding a physiologically active substance to a physiologically active substance-containing adsorbent previously prepared by adsorbing the same or a different physiologically active substance onto an inorganic adsorbent, and dispersing and mixing;dispersing the resulting mixture in a polymerizable vinyl monomer containing 0 to 50% of synthetic high molecular weight subtance which is polymerizable at a temperature of below -20.degree. C.; and,after holding the desired shape, irradiating the resulting dispersion with an ionizing radiation at a temperature of -20.degree. to -100.degree. C. to polymerize.
摘要:
A polymer composition containing a physiologically active substance which can be released at a controlled rate is prepared by contacting one or more polymerizable monomers with the physiologically active substance, mking the monomers into a specific shape and then irradiating the shaped article with light or an ionizing radiation at a low temperature below room temperature to polymerize the polymerizable monomers.
摘要:
A curable resin composition for forming transparent abrasion-resistant coating on the surface of organic and inorganic materials comprising glycidol prepolymer. The composition can contain polymerizable alkoxysilane compounds in addition to glycidol prepolymer. The resulting coating has abrasion resistance far better than most known organic resins.
摘要:
A transparent coated resin composite comprising: (a) a resin substrate mainly comprising polymethyl methacrylate, (b) a precoating which is formed of a silicon compound selected from the group consisting of methacryloxyalkyltrialkoxysilanes, aminoalkyl-trialkoxysilanes, vinyltris(alkoxyalkoxy)silanes, vinyltrialkoxysilanes and hydrolysates thereof on said substrate, and (c) an over-coating which is formed of a silicon compound selected from the group consisting of glycidoxyalkyltrialkoxysilanes, N-aminoalkylaminoalkyl-trialkoxysilanes, (3,4-epoxycyclohexyl)alkyltrialkoxysilanes and hydrolysates thereof on said precoating is provided. The over-coating may contain other polymerizable monomers. The over-coating which provides the substrate with the good abrasion resistance and anti-fogging property is firmly bonded to the substrate by virtue of the precoating and exhibits excellent abrasion resistance as well as anti-fogging property without impairing the optical characteristics of methyl methacrylate resins.
摘要:
An electrophotographic photoreceptor comprises an electrically conductive support, a photoconductive layer provided thereon, and a protective layer coated on the photoconductive layer, wherein the protective layer comprises a product of uncatalized hydrolysis of a composition essentially consisting of at least one specific epoxysilane compound, at least one specific alkylalkoxysilane compound, and at least one specific aminosilane compound. The photoreceptor is very useful in that it is free from wear due to friction with paper and cleaning members, keeps high resolving power, and is sufficiently proof against continuous copying under conditions of high temperature and high humidity.
摘要:
This invention provides a process for preparing a transparent polymeric product free from strain and bubbles and having improved physical and chemical properties. The product can be produced from a bis-allylcarbonate-based monomer mixture by cast polymerization for extremely shortened polymerization time.