81results about How to "Not easy to color" patented technology

Disclosed is a composite gel electrolyte film for a secondary battery, which has improved ion conductivity and excellent ignition resistance, while being insusceptible to coloration. Specifically disclosed is a composite gel electrolyte film for a secondary battery, which is composed of a gel electrolyte for a secondary battery and a porous film that is composed of at least one resin selected from the group consisting of polyethylenes, polypropylenes and polyimides. The gel electrolyte for a secondary battery is obtained by impregnating an electrolyte solution holding film with an nonaqueous electrolyte solution, and the electrolyte solution holding film contains a vinylidene fluoride copolymer resin that comprises a vinylidene fluoride unit and a tetrafluoroethylene unit at a vinylidene fluoride unit / tetrafluoroethylene unit molar ratio of from 55 / 45 to 95 / 5, while also containing a hexafluoropropylene unit in an amount of 0-10% by mole (with the total of the vinylidene fluoride unit, the tetrafluoroethylene unit and the hexafluoropropylene unit being 100% by mole).

The invention discloses an SBS (styrene-butadiene-styrene)-modified colorless cementing material which is prepared by mixing the following components in parts by weight: 43-70 parts of base oil, 28-50 parts of modifier, 2-7 parts of ethylene-vinyl acetate copolymer and 2-4 parts of styrene-butadiene-styrene block copolymer. The invention also discloses a preparation method of the SBS-modified colorless cementing material, which comprises the following steps: mixing the rubber oil, C5 petroleum resin, ethylene-vinyl acetate copolymer and styrene-butadiene-styrene block copolymer until the C5 petroleum resin, ethylene-vinyl acetate copolymer and styrene-butadiene-styrene block copolymer are sufficiently swollen and mixed in the rubber oil to form a uniform mixture, and adding methyl cellulose as a stabilizer, thereby obtaining the SBS-modified colorless cementing material. The SBS-modified colorless cementing material disclosed by the invention has the advantages of low cracking tendency at low temperature, excellent high-temperature stability, excellent water damage resistance, excellent viscoelasticity, accessible raw materials and lower cost.

The invention belongs to the technical field of dyes, in particular to a composite reactive black dye, comprising a dye shown in formula (1), a dye shown in formula (2) and a dye shown in formula (3), in parts by weight The proportioning ratio is as follows: 50-100 parts of the dye of the formula (1), 5-45 parts of the dye of the formula (2), and 0-5 parts of the dye of the formula (3). The present invention also provides a black dye composition, including a color-fixing alkali agent, a dyeing accelerator and the above-mentioned composite reactive black dye. The composite reactive black dye provided by the present invention has higher dyeing depth, good color fixation rate and washing performance, and low raw material cost. The compounding of the three dyes of formula (3) makes the dyed fabric have higher level dyeing property, high color fixing rate and high fastness, and achieves unprecedented jet-black fullness and dyeing depth, and increases the washability of the dye It solves the problems of poor washability and serious color sticking of existing reactive black dyes, and is suitable for exhaust dyeing, pad dyeing and resist printing of fiber materials.

The present invention provides a novel polycarbonate resin which is excellent in heat resistance and mechanical strength, is not easily colored during polymerization and molding, and is excellent in transparency and color tone. A polycarbonate resin containing a structural unit derived from a dihydroxy compound represented by the following formula (1), the dihydroxy compound represented by the formula (1) having a boric acid content of 100 ppm by weight or less and / or the tertiary amine content is 1000 ppm by weight or less, and further has a terminal phenyl group derived from the carbonic acid diester represented by the following formula (2), and the terminal phenyl group concentration is 30 μeq / g or more. (In formula (1), R 1 , R 2 , R 3 , R 4 Each independently represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, and a cycloalkoxy group having 6 to 20 carbon atoms. , an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an aryloxy group having 6 to 10 carbon atoms, an aralkoxy group having 7 to 20 carbon atoms, or a halogen atom. The cyclobutane ring represents any of a mixture of cis and trans isomers, a single cis isomer, and a single trans isomer) (in formula (2), R 5 , R 6 each independently a substituted or unsubstituted aromatic group)