35results about How to "Excellent foam suppression" patented technology

The invention provides an oil-in-water type emulsion composition having excellent storage stability which is free from the occurrence of sickening or solidification during storage without the restriction by the compounding thereof. An oil-in-water type emulsion composition and a method for producing the composition are provided, wherein the oil-in-water type emulsion composition comprises an oil phase component containing a higher alcohol having 12 to 30 carbon atoms and hydrophilic inorganic fine particles sparingly soluble in water, wherein fine particles of the oil phase component are dispersed in a state in which they are covered by the above hydrophilic inorganic fine particles.

The invention relates to a preparation method of a foam inhibiting and antifoaming agent for a polyvinyl alcohol (PVA) aqueous solution. The foam inhibiting and antifoaming agent for the PVA aqueous solution consists of the following components in parts by weight: 30-50 parts of a main antifoaming and foam breaking agent, 1-5 parts of a synergistic antifoaming agent, 3-5 parts of a dispersing and wetting agent, 5-10 parts of a solubilizing agent and 40-60 parts of water, and is a mixture which is dispersed into water and is mixed by dispersing in a way of stirring at a high speed at the temperature of 80-95 DEG C for 30 minutes. The foam inhibiting and antifoaming agent prepared with the method is suitable for the preparation process of a high-concentration and high-viscosity PVA aqueous solution, and has excellent foam inhibiting and antifoaming functions by being added in the amount of 0.3-1 percent.

The invention discloses silicon-modified polyether, and a preparation method and application thereof. The silicon-modified polyether has number-average molecular weight of 200 to 2000 g / mol. In the formula, which is described in the specification, of the silicon-modified polyether, R is a straight-chain or branched-chain C6-18 alkyl group; R' is a straight-chain or branched-chain C1-10 alkylene group or a C6-10 arylene group; m is in a range of 1 to 20; n is in a range of 0 to 20; and m and n are both integers. The preparation method is simple; the prepared silicon-modified polyether is easilydissolvable in water, rapid in penetration, low in foaming and excellent in foam inhibition and defoaming, can be stably stored in an environment with a pH value of 5.0 to 9.0 for a long time, and isapplicable to preparation of pre-treatment agents for a variety of fabrics; and the silicon-modified polyether is also applicable as a penetrating agent to fields like textiles, papermaking, printingink and pesticides, or as a low-foam surfactant to fields like household cleaning and industrial cleaning.

The invention provides a water-based high-fullness clear primer. The preparation method of the water-based high-fullness clear primer comprises the following steps: firstly, sequentially putting A1 and A2 into a dispersing cylinder, putting B1, B2 and B3 into the dispersing cylinder after the A1 and the A2 are dispersed, and then uniformly stirring; secondly, sequentially adding C1, C2, C3 and C4 into another container while stirring, after intensive stirring, slowly adding the C1, C2, C3 and C4 into the dispersing cylinder in a linear way, performing dispersing till no condensed oil exists on a scrapper; thirdly, firstly adding 1 / 2D1, then adding 1 / 2D1 and D2 after the 1 / 2D1 is uniformly stirred at an intermediate speed, and obtaining the water-based high-fullness clear primer, wherein A1 is 70 to 75 parts of self-cross-linking acrylic resin emulsion; A2 is 5 to 10 parts of water-based polyurethane resin emulsion; B1 is 0.1 to 0.2 parts of sterilizing agent; B2 is 2 to 6 parts of water; B3 is 1 to 2 parts of propylene glycol; C1 is 3 to 5 parts of coalescing agent; C2 is 2 to 3 parts of defoaming agent; C3 is 0.2 to 0.6 parts of flatting agent; C4 is 1 to 8 parts of water, D1 is 0.4 to 0.6 parts of thickening agent; D2 is 0.6 to 4.3 parts of water.