摘要:
Provided is a polyoxamide resin which has excellent impact resistance and is characterized in that the polyoxamide resin is obtained from a diamine in which the diamine component has 10 to 18 carbons and in that the polyoxamide resin has a relative viscosity (ηr) of 2.1 or greater as determined at 25° C. using 96% sulfuric acid as a solvent and a solution having a concentration of 1.0 g/dL, and also provided is an impact-resistant part comprising this resin. The polyoxamide resin has a higher molecular weight than a conventional polyoxamide resin, a large moldable temperature range as estimated from the difference between the melting point and the thermal decomposition temperature and therefore excellent molten moldability, and furthermore excellent impact resistance when compared to a conventional aliphatic polyoxamide resin without losing the low water absorbency, chemical resistance, hydrolysis resistance, high elasticity, and high strength seen with aliphatic straight-chain polyoxamide resins.
摘要:
This is to provide a polyamide resin which can sufficiently ensure all of a relative viscosity ηr (high degree of polymerization), moldable temperature range estimated from a temperature difference (Td−Tm), heat resistance estimated from a melting point Tm, melt moldability estimated from a temperature difference (Tm−Tc), and low water absorbability as compared with the conventional polyoxamide resin.This is a polyamide resin comprising a dicarboxylic acid-derived unit and a diamine-derived unit being bonded, wherein the above-mentioned dicarboxylic acid contains oxalic acid (Compound A), and the above-mentioned diamine contains 1,6-hexanediamine (Compound B) and 2-methyl-1,5-pentanediamine (Compound C).
摘要:
This is to provide a polyamide resin which can sufficiently ensure all of a relative viscosity ηr (high degree of polymerization), moldable temperature range estimated from a temperature difference (Td−Tm), heat resistance estimated from a melting point Tm, melt moldability estimated from a temperature difference (Tm−Tc), and low water absorbability as compared with the conventional polyoxamide resin.This is a polyamide resin comprising a dicarboxylic acid-derived unit and a diamine-derived unit being bonded, wherein the above-mentioned dicarboxylic acid contains oxalic acid (Compound A), and the above-mentioned diamine contains 1,6-hexanediamine (Compound B) and 2-methyl-1,5-pentanediamine (Compound C).
摘要:
A polyimide film having enhanced surface activity and improved surface adhesion, and a polyimide film having a metal film in which the metal film is bonded to the polyimide film with practically accepted high bonding strength are provided by a polyimide film having, at least on one surface, a coated particle layer comprising inorganic particles having a mean particle size of 1,000 nm or less which are coated with a metal oxide layer via an intervening layer comprising a mixture of the same metal oxide as above and polyimide, and the polyimide film having a metal film placed on the coated particle layer.
摘要:
A multi-channel input signal is downmixed to a multi-channel output signal by one of four downmixing routines. The downmixing routines compute the output channels by multiplying each of a number of coefficients by one of the input channels, and then accumulating the resulting products to form the output channels. For efficiency, the four downmixing routines perform various different computations on the input channels using different combinations of coefficients. For a given combination of input and output channels, a downmixing routine is chosen that will perform all of the necessary computations for downmixing the input to the output, while minimizing the number of computations performed with zero-valued coefficients. As a result, computational efficiency is increased by avoiding unnecessary computations, while at the same time, programming effort and program size are maintained at reasonable levels.
摘要:
A dye transfer sheet for heat-sensitive transfer recording which has an ink layer containing a sublimable dye formed on a base film, said sublimable dye being of the formula: ##STR1## wherein --B represents ##STR2## --Z.sup.1 and --Z.sup.2 each represents hydrogen, alkyl optionally substituted by fluorine, alkoxy, halogen or --NHB, K represents ##STR3## --R.sup.1, --R.sup.2, --R.sup.6 and --R.sup.7 each represents hydrogen, C.sub.1 -C.sub.8 substituted or unsubstituted alkyl, substituted or unsubstituted vinyl, allyl or aryl, --R.sup.3, --R.sup.4 and --R.sup.5 each represents hydrogen or methyl, --X represents hydrogen, alkyl optionally substituted by fluorine, alkoxy, formylamino, alkylcarbonylamino optionally substituted by fluorine, arylcarbonylamino or halogen, and --Y represents hydrogen, alkyl optionally substituted by fluorine, alkoxy or halogen.
摘要:
A dye-incorporated composition which comprises a cyanine type dye and an azo metal chelate compound comprising an azo type compound of the following formula (I): ##STR1## (wherein A is a residue forming a hetero ring together with the carbon atom and the nitrogen atom to which it is bonded, B is a residue forming an aromatic ring or a hetero ring together with the two carbon atoms to which it is bonded, and X is a group having an active hydrogen), and a metal, and an optical recording medium comprising a recording layer which contains the dye-incorporated composition.
摘要:
A photochromic material to be used for a photosensitive arrangement such as photosensitive laminated glass. The photochromic material is formed of a high polymer substrate material containing photochromic spirooxazine compound as expressed by the following general formula: ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are at least one selected from the group consisting of alkyl group, alkenyl group, cycloalkyl group and aryl group; R.sup.4 is one selected from the group consisting of hydrogen atom and alkyl group having the number of carbon atoms ranging from 1 to 5; rings X and Y are at least one selected from the group consisting of hydrocarbon aromatic ring and heterocyclic aromatic ring; and Z is one selected from the group consisting of oxygen atom and sulfur atom. Additionally, a triplet state quencher such as nitroxy free radical is contained in the high polymer substrate material, thereby suppressing generation of deterioration substance due to irreversible reaction of spirooxazine molecules.
摘要:
A treated powdery copolymer of vinyl ester-ethylene comprises a powdery vinyl ester-ethylene copolymer. The surface of the copolymer is coated with a wax having a melting point of at least 40.degree. C., at least said melting point.
摘要:
A transfer sheet for thermal transfer recording having a color material layer containing a sublimable dye on one surface of a base film, wherein said sublimable dye is a dicyanoimidazole series dye represented by the formula ##STR1## wherein, R, R.sup.1, and R.sup.2 each represents an allyl group, an alkyl group having 1 to 8 carbon atoms, an alkoxyalkyl group having 3 to 8 carbon atoms, an aralkyl group, a hydroxyalkyl group; X represents a methyl group, a formylamino group, an alkylcarbonylamino group having 1 to 8 carbon atoms, an alkylsulfonylamino group having 1 to 8 carbon atoms, an alkoxycarbonylamino group having 1 to 8 carbon atoms, or a halogen atom; and Y represents a hydrogen atom, an alkoxy group having 1 to 4 carbon atoms, a methyl group, or a halogen atom.