摘要:
A thermoplastic resin composition consisting essentially of (A) 10-90% by weight of a graft copolymer (A) obtained by polymerizing a mixture of an alkenyl cyanide compound and an aromatic alkenyl compound in the presence of a butadiene rubber latex in which 40-100% by weight of butadiene rubber particles (A-1) having an average particle diameter of at least 1,300 .ANG. but less than 2,100 .ANG., 0-60% by weight of butadiene rubber particles (A-2) having an average particle diameter of 2,100 .ANG. or more and 0-20% by weight of butadiene rubber particles (A-3) having an average particle diameter other than the average particle diameters of the particles (A-1) and (A-2) are dispersed, provided that the alkenyl cyanide compound content in the resin component of the graft copolymer (A) is at least 10% by weight but less than 30% by weight, and (B) 90-10% by weight of a copolymer of an alkenyl cyanide compound with an aromatic alkenyl compound having an alkenyl cyanide compound content of 30-40% by weight, the proportion of the butadiene rubber component in the composition being 5-30% by weight. Said thermoplastic resin composition is excellent in surface appearance of molded article, shows an improved ejection whiteining during molding, and a high gloss of molded article.
摘要:
The present invention has an object to provide an economically advantageous rumen bypass formulation capable of containing a biologically-active substance at a high concentration by means of using a protective material composted of safe natural product to ecosystem. The preparation of the rumen bypass formulation for ruminants according to the present invention can be accomplished by dispersing a biologically-active substance in an amount of from 50 to 90% by weight relative to the weight of the formulation into a protective material comprising specific salts of aliphatic carboxylic acid and either of fatty acid or aliphatic alcohol at a ratio of the former to the later being in a range of from 30:70 to 10:90.
摘要:
The present invention is directed to rumen-bypass preparations for ruminants composed of a core preparation and a coating layer applied thereonto, characterized in that the core preparation contains from 50 to 90% by weight, based on the core preparation, of a biologically-active substance, that the active substance has been dispersed in from 10 to 50% by weight of a protective substance, and that the coating layer applied onto the core preparation is made of from at least one material selected among linear and branched, saturated and unsaturated aliphatic C12-24 monocarboxylates, polymers insoluble in the neutral region but soluble in the acidic region, and zein. Use of protective substances originating in natural substances and being harmless to the ecological system makes it possible to obtain rumen-bypass preparations which contain biologically-active substances at a high concentration and are advantageous economically.
摘要:
The present invention relates to a pelletization-resistant rumen bypass formulation of a feed additive resistant to pelletization by applying a reinforcement measure resisting to a mechanical stress during the pelletization and humidification and heating at steaming, etc. to a rumen bypass formulation formed of biologically active principles and protective matrices and a feed pellet for ruminants containing said pelletization-resistant rumen bypass formulation therein. More particularly, the present invention relates to a pelletization-resistant rumen bypass formulation prepared by including one or more rumen bypass formulations formed of biologically active principles and protective matrices in the moldings of various types of macromolecules described above (pelletization-resistant protective matrices) having a shape retaining property during a process of pelletization, and a feed pellet for ruminants applying the same. The present invention enabled the practical use of feed pellets containing the rumen bypass formulation which was not practically possible to formulate in the past.
摘要:
A photo-curable resin composition which comprises mixing urethane-acrylate resin [I], which is obtained by reacting components A and B, i.e.,Component-A: Polyisocyanates containing polybutadiene withComponent-B: Acrylate or methacrylate having a hydroxyl group in the molecule thereof anda photopolymerization initiator [II].The cured composition is suitable as an additive plating resist in the manufacture of electronic circuitry.
摘要:
A process for producing a resin having a high heat resistance with a high polymerization conversion by emulsion-polymerizing .alpha.-methylstyrene (AMS), methyl methacrylate (MMA) and acrylonitrile (AN), characterized in that the polymerization is conducted in two steps; A monomer mixture consisting of 60-85% by weight of AMS, 2-30% by weight of MMA and 5-20% by weight of AN is subjected to copolymerization in the first step until 25-85% by weight, based on the weight of the final copolymer, of a copolymer is formed, and in the second step, at least one monomer of the above three monomers is added to the polymerization system to adjust the composition ratio of the three monomers in the polymerization system so as to fall in the region surrounded by the lines connecting points A, B, C, D and E in the triangular coordinate graph indicating the quantitative relationship of the three monomers, and the resulting monomer mixture is subjected to polymerization conditions to complete the polymerization.