摘要:
There is disclosed a blood anticoagulant consisting essentially of a sulfonated polyethyleneimine formed by sulfonating 1 mole % or more of the --NH-- and --NH.sub.2 groups present in a polyethyleneimine having a molecular weight of 300 or greater. This blood anticoagulant is suitable for preventing coagulation of blood collected for purpose of hematological examination.
摘要:
There is disclosed a blood anticoagulant consisting essentially of a salt formed by reacting ethylenediaminetetraacetic acid with an alkylenediamine having 2 to 8 carbon atoms in a molar ratio of ethylenediaminetetraacetic acid to alkylenediamine ranging from 1:0.5 to 1:2, or with an alkylamine having 1 to 8 carbon atoms in a molar ratio of ethylenediaminetetraacetic acid to alkylamine ranging from 1:1 to 1:3. This blood anticoagulant is suitable for preventing coagulation of blood collected for purpose of hematological examination.
摘要:
A polyorganosiloxane-based high-impact thermoplastic graft copolymer superior in impact resistance, light resistance, surface gloss and color fastness produced by the emulsion graft polymerization of at least one vinyl monomer on an emulsion-polymerized polyorganosiloxane which consists of90 to 99.8 mole % of an organosiloxane unit represented by the formulaR'.sub.2 SiO.sub.2/2 (I) wherein R' is the same or different and denotes methyl, ethyl, propyl, or phenyl,0.1 to 10 mole % of a unit derived from a graft-linking agent, said unit being represented by the formula ##STR1## wherein; R.sup.2 denotes methyl, ethyl, propyl, or phenyl; n denotes a number of 0, 1, and 2; and p denotes a number of 1 to 6, and0.1 to 10 mole % of a unit derived from a tetrafunctional silane crosslinking agent, said unit being represented by the formulaSiO.sub.4/2 (III),said polyorganosiloxane showing a degree of swelling of 5 to 15 in toluene, andsaid graft copolymer containing said polyorganosiloxane in an amount of 10 to 70% by weight; and a process for producing the said graft copolymer.
摘要:
An acrylic fiber having linen- or cotton-like feeling, dry feeling, a high hygroscopicity and a high water retentivity, which is characterized in that said fiber is covered on the outside with creases running along the fiber axis, adjacent creases being 0.1 to 5.mu. apart on the average; has in any of its cross-sections two or more macrovoids, 2.mu. or more in major diameter, which extend in the direction of fiber axis; and said fiber has 30 to 150 microcrimps per 25 mm of fiber length. A method for producing such a fiber is also disclosed.
摘要:
Disclosed is a methacrylic resin cast plate which is comprised of 100 parts by weight of [I] polymethyl methacrylate or a methyl methacrylate copolymer containing at least 90% by weight of methyl methacrylate units and, dispersed therein, a graft copolymer [IV] obtained by graft-polymerizing a hard resin component [III] containing at least 90% by weight of methyl methacrylate units onto a crosslinked rubbery copolymer [II] containing at least 45% by weight of butyl acrylate units and having an average particle diameter of 0.1 to 1 .mu.m, the amount of the graft copolymer [IV] being 2 to 30 parts by weight as the amount of the crosslinked rubbery copolymer.
摘要:
Disclosed is a resin composition which is usable for an exterior article without being coated on its surface when molded into the article and is excellent in the color tone and has good impact resistance and weatherability, said composition comprising (I) 10 to 70% by weight of a high-rubber-content graft polymer obtained by polymerizing 50 to 10% by weight of a monomer mixture (C) comprising 10 to 90% by weight of at least one aromatic vinyl monomer and 90 to 10% by weight of at least one ethylenically unsaturated monomer represented by the following general formula:CH.sub.2 .dbd.CRXwherein R stands for a hydrogen atom or methyl group, and X stands for a group --CN or --COOR.sub.1 in which R.sub.1 stands for an alkyl group having 1 to 8 carbon atoms,in the presence of a latex of a multi-layer crosslinked acrylic rubber particles containing 5 to 30% by weight of a rigid crosslinked resin (A) having a core particle size of 0.15 to 0.45.mu. in the interior of the rubber particles and 45 to 85% by weight of a crosslinked acrylic acid ester polymer (B) comprising an acrylic acid ester as the main component in the outer layer of the rubber particles, so that the total amount of the components (A), (B) and (C) is 100% by weight, (II) 90 to 30% by weight of a thermoplastic resin obtained by polymerizing at least one alkyl acrylate or methacrylate represented by the following general formula:CH.sub.2 .dbd.CRCOOR.sub.1wherein R stands for a hydrogen atom or methyl group, and R.sub.1 stands for an alkyl group having 1 to 8 carbon atoms,in an amount of at least 90% by weight, and (III) 0 to 50% by weight of a diene type rubber-containing thermoplastic resin, the sum of the amounts of the components (I), (II) and (III) being 100% by weight.
摘要:
Disclosed is a methacrylic resin cast plate which is comprised of 100 parts by weight of [I] polymethyl methacrylate or a methyl methacrylate copolymer containing at least 90% by weight of methyl methacrylate units and, dispersed therein, a graft copolymer [IV] obtained by graft-polymerizing a hard resin component [III] containing at least 90% by weight of methyl methacrylate units onto a crosslinked rubbery copolymer [II] containing at least 45% by weight of butyl acrylate units and having an average particle diameter of 0.1 to 1 .mu.m, the amount of the graft copolymer [IV] being 2 to 30 parts by weight as the amount of the crosslinked rubbery copolymer.The methacrylic resin cast plate has a high transparency and impact resistance.
摘要:
Disclosed is a resin composition which is usable for an exterior article without being coated on its surface when molded into the article and is excellent in the color tone and has good impact resistance and weatherability, said composition comprising (I) 10 to 70% by weight of a high-rubber-content graft polymer obtained by polymerizing 50 to 10% by weight of a monomer mixture (C) comprising 10 to 90% by weight of at least one aromatic vinyl monomer and 90 to 10% by weight of at least one ethylenically unsaturated monomer represented by the following general formula:CH.sub.2 .dbd.CRXwherein R stands for a hydrogen atom or methyl group, and X stands for a group --CN or --COOR.sub.1 in which R.sub.1 stands for an alkyl group having 1 to 8 carbon atoms, in the presence of a latex of a multi-layer crosslinked acrylic rubber particles containing 5 to 30% by weight of a rigid crosslinked resin (A) having a core particle size of 0.15 to 0.40.mu. in the interior of the rubber particles and 45 to 85% by weight of a crosslinked acrylic acid ester polymer (B) comprising an acrylic acid ester as the main component in the outer layer of the rubber particles, so that the total amount of the components (A), (B) and (C) is 100% by weight, (II) 90 to 30% by weight of a thermoplastic resin obtained by polymerizing at least one alkyl acrylate or methacrylate represented by the following general formula:CH.sub.2 .dbd.CRCOOR.sub.1wherein R stands for a hydrogen atom or methyl group, and R.sub.1 stands for an alkyl group having 1 to 8 carbon atoms, in an amount of at least 90% by weight, and (III) 0 to 50% by weight of a diene type rubber-containing thermoplastic resin, the sum of the amounts of the components (I), (II) and (III) being 100% by weight.
摘要:
A resin composition for use in uncoated exterior materials markedly excellent in appearance and having high impact resistance and weather resistance wherein 10-70% by weight of a graft copolymer (I) having a high rubber content, 90-30% by weight of a rigid thermoplastic resin (II) comprising 10-90% by weight of at least one aromatic vinyl monomer and 90-10% by weight of at least one ethylenic unsaturated monomer having the following general formula:CH.sub.2 =CRXwherein R represents hydrogen or CH.sub.3 group and X represents CN or COOR.sub.1 group (R.sub.1 represents alkyl group having 1-8 carbon atoms), and 0-50% by weight of a diene rubber-containing thermoplastic resin (III) are blended together so that the total amount of components (I) through (III) is 100% by weight, said graft copolymer (I) having a high rubber content being obtained by polymerizing 50-10% by weight of a monomer mixture (c) comprising 10-90% by weight of at least one aromatic vinyl monomer and 90-10% by weight of at least one ethylenic monomer having the following general formula:CH.sub.2 =CRXwherein R represents hydrogen or CH.sub.3 group and X represents CN or COOR.sub.1 group (R.sub.1 represents alkyl group having 1-8 carbon atoms) in the presence of a latex of a crosslinked acrylic rubber having a multi-layer structure which contains, in its particle, 5-30% by weight of a rigid crosslinked resin (a) having a core particle diameter of 0.25-0.40.mu. and of which outer layer part is constructed of 45-85% by weight of a crosslinked acrylic ester type polymer (b) constituted mainly of an acrylic ester, so that the total amount of components (a) through (c) is 100% by weight.