摘要:
An aqueous alkaline slurry of cellulose pulp is bleached with oxygen or peroxide by using a compound represented by general formula (1), (2) or (3) as a bleaching assistant: R1-O-null(C2H4O)m/(AO)nnull-Hnullnull(1)R2-O-null(C2H4O)m/(AO)pnull-(AO)q-Hnullnull(2)(R3)t-X-null(C2H4O)m/(AO)pnull-(AO)r-Hnullnull(3)where R1 stands for a branched alkyl group having 6 to 12 carbon atoms, m stands for an average added mor number of 4 to 15, A stands for a propylene, butylene or phenylethylene group, n stands for an average added mol number of 0 to 4, the addition shown in nullnull is in a random or block form, R2 stands for a linear or branched alkyl group having 6 to 12 carbon atoms, p stands for an average added mol number of 0 to 3.9, q stands for an average added mol number of 0.1 to 4, R3 stands for a hydrogen atom, a methyl or ethyl group, or a branched alkyl group having 3 to 12 carbon atoms, t stands for an integer of 1 to 5, X stands for a residual phenol group, and r stands for an average added mol number of from 0 to 4.
摘要:
A foam comprising a metal salt-crosslinked cellular (co)polymer (A) obtained by polymerizing a monomer charge comprising an .alpha., .beta.-unsaturated carboxylic acid and optionally one or more other vinyl monomers, wherein at least part of said monomer charge is concurrently foamed and polymerized in the presence of a metal salt of carbonic acid, and processes for producing them. Low-density foams that are benign to the environment and can be easily produced can be provided.
摘要:
An interior base material is obtained by a method comprising a step of treating with a treating agent which comprises (A) a water-insoluble water-absorbent resin having a water absorbency to pure water for 50 to 1,000 ml/g and a particle size of 0.1 to 100 .mu.m, (B) a polyoxyalkylene nonionic surfactant and/or an anionic surfactant, and (C) a solvent having the boiling point of 50 to 250.degree. C. A process for printing the thus-treated interior base material comprises applying a dye ink having a viscosity of 1 to 100 cps by an ink-jet method, or applying a textile printing dye paste having a viscosity of 100 to 10,000 cps by a textile printing method followed by a heat-color developing treatment. The present invention provides a printed object with excellent sharpness, penetration effect enabling uniform printing from the surface to the deep part of the base material even to a base material having a thick three-dimentional structure or a base material having a long pile and thickness such as moquette, with an excellent build-up.
摘要:
A diffusing device containing a fragrance or deodorant material includes a gel of a water swellable/water absorbing resin carrying the fragrance and/or deodorant components. The fragrance or deodorant release device can be readily produced on an industrial scale, is easy for a user to handle, and employs a water swellable/water absorbing resin. The gel is produced by enclosing a water swellable/water absorbing resin in a water resistant container, such as a packet, having a water permeable portion and immersing the packet into an aqueous medium containing the fragrance and/or deodorant components whereby the resin absorbs the fragrance and/or deodorant components.
摘要:
The present invention relates to an electrolyte for use in electronic components and electrolytic capacitors in which said electrolyte is used; including as a solute, a quaternary salt of a compound having a N,N,N'-substituted amidine group, such as 1-methylimidazole, 1-methylbenzoimidazole, 1,2-dimethylimidazoline, 1,2-dimethyl-1,4,5,6-tetrahydropyrimidin e, 1,8-diazabicyclo�5.4.0!undecene-7,1,5-diazabicyclo �4.3.0!nonene-5 and the like. The electronic components such as electrolytic capacitors and electrochromic display devices, using this electrolyte, have an excellent thermostability, high specific conductivity, and do not degrade or corrode metal, resin or rubber.
摘要:
A process for producing a colorless unsymmetrical-diester of maleic acid, useful as a raw material of an emulsifier for emulsion polymerization and as a modifier for a polymer, which comprises:(1) reacting maleic anhydride with a monohydric alcohol in the presence of an inert organic solvent, in a molar ratio of 1:(1.0-1.2) to obtain maleic acid mono ester containing substantially no unreacted maleic anhydride, and(2) reacting said monoester with an alkenyl halide in the presence of a tertiary amine and water, in a molar ratio of said monoester:water of 1:(0.01-0.20).
摘要:
Resin compositions, comprising (A) a styrene/acrylic polymer and (B) a polyester dispersed therein with an average particle size of not more than 3 .mu., are obtained by quenching a mixture of (A) and (B) melted at 150.degree.-200.degree. C., below the glass transition temperature of the polymer (A) within 5 minutes, and are of good thermal shelf stability and electrical properties and provide toner binders of high hot offset causing temperature and improved low temperature fixing properties.
摘要:
A releasing composition for an electrophotographic toner, which comprises 60.about.99.5% by weight of a low molecular weight polypropylene (A), and 0.5.about.40% by weight of at least one modified polyolefin (B) selected from the group consisting of (B1) a modified polypropylene comprising a low molecular weight polypropylene (a1) having a melt viscosity at 160.degree. C. higher than that of said polypropylene (A), modified with an ethylenically unsaturated carboxylic acid or an anhydride thereof (b1), and (B2) a modified polyethylene comprising a low molecular weight polyethylene (a2) having a melt viscosity of 10.about.8,000 cps at 140.degree. C., modified with an ethylenically unsaturated carboxylic acid or an anhydride thereof (b2). A toner prepared from a combination of the releasing composition and a thermoplastic binder resin exhibits improved flowability without reducing the offset temperature of the toner.
摘要:
Foamed polyurethanes substantially free from non-uniform density distribution are obtained by dispersing an inert gas with mechanical stirring into a foamed polyurethane-forming composition containing substantially no blowing agent and comprising (1) an organic polyisocyanate component, (2) a polyol component comprising a high molecular weight polyol (A1) and a low molecular weight polyol (A2), (3) a dehydrating agent (B) and optionally organic microballoons, and curing the resulting composition containing therein the inert gas substantially homogeneously distributed. Foamed polyurethanes thus obtained are lightweight and of reduced warpage after processing and are suitable for model materials.
摘要:
The invention concerns a process for producing water-insoluble water-absorbing resins, which comprises the steps of initiating polymerization of an aqueous solution containing 30 to 80% by weight of (a) a hydrophilic vinyl monomer having a functional group and (b) a crosslinking agent by supplying the aqueous solution together with (c) a polymerization initiator to a polymerizing apparatus capable of heating and/or cooling surfaces in contact with the aqueous solution, subsequently causing constant temperature polymerization of the solution without agitating the same by controlling the temperature of the system being polymerized to 20.degree. to 70.degree. C., and elevating, if necessary, the temperature ok the system to be in excess of 70.degree. C. in a stage with a polymerization percentage of 70% or above before completion of polymerization. Obtainable water-insoluble water-absorbing resins have excellent water-absorbing property and have less water-soluble components. Thus, the water-absorbing resins according to the invention are useful for physiological commodities, paper diapers or like sanitary materials, drip absorbing materials, cold water retainers, dew condensation prevention materials for construction materials and so forth.