39results about How to "No gelation" patented technology

The invention discloses a production method of water-in-water colorful paint containing color sand. The production method comprises the following steps: (a), preparing a protection glue solution; (b), producing basic slurry; (c), matching the color of the basic slurry; (d), performing color point granulation; (e), producing coating gloss oil; (f), producing finished paint. Granite-shaped particle containing particles are formed on the surface of the paint produced by the method, imitated-marble granite paint can be prepared from the paint, formed patterns are simple, artistic and elegant, and the paint prepared by the method is level in surface and not easy to form ash deposition, can keep the overall appearance longer, and has stain resistance; the special coating gloss oil can keep the color on the surface of the paint to be permanent and fresh, and has weather resistance; the paint is high in water resistance and rot resistance, is neither absorbed by a wall surface nor damaged in rainy days, and can protect the overall shapes of buildings.

The invention relates to a preparation method of a self-emulsified epoxy curing agent, wherein the preparation method comprises the following steps: a first step, adding an amine component and single epoxy functionality glycidyl ether to a container having nitrogen protection, and carrying out a reaction for 2-8 h at the temperature of 50-105 DEG C, to obtain an end-capped amine epoxy addition product; a second step, dropwise adding epoxy resin into the end-capped amine epoxy addition product, and carrying out a reaction for 1-8 h at the temperature of 20-100 DEG C, to obtain an intermediate product; and a third step, dropwise adding small molecular diglycidyl ether into the intermediate product, and carrying out an addition reaction for 2-8 h at the temperature of 20-100 DEG C, to obtain the self-emulsified epoxy curing agent. The self-emulsified epoxy curing agent has more excellent application period and physical properties, has shorter surface drying time, and can make epoxy resin cured at room temperature to form a hard paint film.

The object of the present invention is to provide a room temperature cross-linkable synthetic resin emulsion composition, even if it uses a polymer compound having three or more hydrazine groups in the structure that can form a three-dimensional cross-linked structure as a cross-linking agent, it will not produce It gels and is excellent in storage stability. In addition, when it is applied to various applications, it is excellent in various physical properties such as water resistance and coating film strength. The synthetic resin emulsion composition of the present invention contains a water-soluble polymer compound, a carbonyl group-containing acrylate resin, and a hydrazine group-containing polymer compound having a weight average molecular weight of 5,000 or more and having three or more hydrazine groups in the molecule. The emulsion composition is excellent in various physical properties such as water resistance.

The invention discloses water-in-water multicolor paint containing color sand. The water-in-water multicolor paint comprises color-sand-containing basic paint, a protective glue solution, cladding gloss oil and an addition agent; basic slurry is prepared from the following raw materials in parts by mass: 200-400 parts of water, 3-8 parts of cellulose ether, 7.5 parts of propylene glycol, 1 part of a moist dispersing agent, 1 part of a PH adjusting agent, 10 parts of a film-forming addition agent, 1 part of an antifoaming agent, 80-130 parts of a kaolin and heavy calcium powder mixture, 1-2 parts of barium metaborate, 200-400 parts of an acrylic emulsion, 1 part of bactericides, 1 part of a dispersing agent, 1 part of a stabilizing agent, 50 parts of 6.5% protective glue, 0.5-1 part of aqueous polishing paste, and 1-2 parts of sodium phosphate tripolymer. The water-in-water multicolor paint is level in surface and not liable to cause ash deposition, can maintain whole appearance for a long term, and has dirty resistance. The specially-made cladding gloss oil can maintain the color of the surface of the water-in-water multicolor paint containing color sand bright for a long time, and has weather resistance. The water-in-water multicolor paint has good water resistance and anti-corrosive properties, and protects the whole modeling of a building. Shaped patterns are plain, and elegant in appearance. Besides, the water-in-water multicolor paint has good stability and extremely high market economy value.

The invention relates to a honeycomb film made of a biodegradable polymer which has biodegradation properties as an anti-adhesion membrane for preventing adhesion after an operation, is excellent in handling properties, and exhibits a satisfactory adhesion preventive effect stably over a desired period of time, and to a production process of the same. Above all, the invention provides an anti-adhesion membrane of a honeycomb film made of polylactic acid as a biodegradable polymer and a phospholipid and a production process of the same.

The invention relates to chitosan with high deacetylation degree and high molecular weight and a preparation method thereof. The preparation method comprises the following steps: dissolving chitin ina strong alkali solution to obtain a chitin-strong alkali solution; then, increasing the strong alkali content in the chitin-strong alkali solution to 35 to 45wt% in a manner of supplementing a strongalkali solution under the condition that the temperature is 0 to 10 DEG C; wherein the strong base is KOH or NaOH, and the deacetylation reaction is specifically carried out in an oil bath heater ora microwave reactor; the deacetylation degree of the prepared chitosan is 80-95%, and the viscosity-average molecular weight of the prepared chitosan is 7.9 * 10 < 5 >-9.0 * 10 < 5 > g/mol. Accordingto the preparation method disclosed by the invention, deacetylation is carried out under homogeneous conditions, so that the concentration of strong base and the temperature of deacetylation reactionare reduced, the process is simple, the conditions are mild, and the molecular weight of chitosan is remarkably improved; the prepared chitosan is high in deacetylation degree and high in molecular weight and has a great application prospect.

The invention discloses a platinum complex catalyst as well as a preparation method and an application thereof, and relates to the field of platinum complex catalysts. The platinum complex catalyst comprises p-hydroxy benzaldehyde, citric acid, chloroplatinic acid hexahydrate and isopropyl alcohol, wherein a mole ratio of p-hydroxy benzaldehyde to citric acid to chloroplatinic acid hexahydrate is (1.2-1.3): (0.8-1): 1. The catalyst can be used for catalyzing hydrosilylation, particularly used for catalyzing hydrosilylation of allyl glycidyl ether and trimethoxy silane and used for synthesizing KH-560. On the basis of a Speier catalyst, a proper amount of p-hydroxy benzaldehyde and citric acid is added, compared with a conventional platinum complex catalyst, the platinum complex catalyst can maintain higher catalytic activity, shorten the induction period of the reaction, improve the catalytic efficiency of the reaction and increase the yield of KH-560 simultaneously when used for synthesizing KH-560, and in terms of trimethoxy silane, the yield is up to 91.2%.

To suppress clogging of a nozzle to stably inject a liquid material and to increase the working efficiency of a (organic EL) coating device equipped with the nozzle to eject a coating liquid or an organic EL material onto a substrate. The inner space SP of a nozzle body 41 constituting the nozzle 4a functions as a passage to pass an organic EL material. A filter 43 is disposed in the inner position on the passage and apart from the orifice 45a disposed at the top end of the nozzle. The filter 43 has filtering accuracy of 10 [mu]m and collects foreign matters and a gelled substance to prevent from reaching to the orifice 45a. Thus, clogging of the orifice 45a due to foreign matters or the like can be surely prevented.

The invention relates to an addition-type solution-type isolating agent and a preparation method thereof, and the isolating agent is an antistick coating base material. The isolating agent is prepared from an A composition (an isolating agent effective composition) containing vinyl polysiloxane, a platinum catalyst B composition and a hydrogen-containing polysiloxane C composition, and the A composition, the B composition and the C composition are subjected to an addition reaction and converted into a partially-crosslinked polysiloxane coating with isolating property. The isolating agent before curing is in the state of silicon oil, and the cured isolating layer is an elastic coating in the state of rubber. When being applied to specific release paper, the provided isolating agent shows excellent peeling performance and good usability, has no mobility and keeps a relatively high bonding rate.

Provided is a process for efficiently producing a cationically curable condensed silicon compound. There was an unsolved problem that, in a condensation reaction, an oxetanyl group is subjected to ring-opening under acidic conditions, while gelation is easily caused under alkaline conditions. It was found that a silicon compound (C) having an oxetanyl group can be obtained without causing gelation even at a high concentration by a production process including a first step of separately subjecting a silicon compound (A) having four siloxane bond-forming groups and a silicon compound (B) havingan oxetanyl group to an alcohol exchange reaction with 1-propanol and a second step of subjecting silicon compounds (AP) and (BP) undergone the first step to hydrolytic copolycondensation under alkaline conditions at a specific ratio.