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311 results about "Aminosilochrome" patented technology

The rate of 3 ml/min on a column containing 100 g of Aminosilochrome C-80 equilibrated with 0.1 M acetate buffer, pH 5.6. Then the column was washed with 0.1 M acetate buffer, pH 5.6, to E280=0.1 in the eluate. The chymosin was eluted with 0.005 M tIC1, pH 2.5.

Amine organoborane complex initiated polymerizable compositions containing siloxane polymerizable components

In one embodiment the invention is a polymerizable composition comprising a) an organoborane amine complex; b) one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization; c) one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization; and d) a catalyst for the polymerization of the one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization. This composition may further comprise a compound which causes the organoborane amine complex to disassociate. In a preferred embodiment, the two part composition further comprises a compound which is reactive with both the b) one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization; and the c) one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization. This composition can be polymerized by contacting the two parts of the composition. In another embodiment the invention is an organoborane amine complex comprising an alkyl borane having ligands which are alkyl, cycloalkyl or both and an amino siloxane.
Owner:DOW GLOBAL TECH LLC

Waterborne wear-resisting ultraviolet-cured glazing oil and preparation method thereof

The invention provides waterborne wear-resisting ultraviolet-cured glazing oil and a preparation method thereof. Epoxy resin is subjected to ring opening by the amino of an amino siloxane coupling agent, and is subjected to polymerization with diisocyanate, a chain extender and hydroxyl acrylate to prepare modified polyurethane acrylate waterborne light-cured resin, and is stirred with various aids to obtain a target. A siloxane group is introduced into a resin main chain structure, so that the wear resistance and the water resistance of the glazing oil are improved; a dry film of the glazingoil has the 100-circle wear of less than 0.1 g, and does not foam or fall after soaking in water for 10 hours. An epoxy resin structure is introduced, so that the initial tack of the glazing oil to print ink is improved. Through small molecules and an internal crosslinker chain extender, an obtained flexible chain structure resin ensures the adhesion and the flexibility of the glazing oil on the ink, the folding number of the dry film of the glazing oil is 16 to 20, and the adhesion is 0 to 1 level. An active monomer diluent is not used, toxic and harmful substances of methylbenzene or dimethylbenzene are free, and a paint film does not have a diluent residual, and is environment-friendly.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Siloxane modified urethane acrylate hyperbranched oligomer and preparation method thereof and multi-curing coating obtained therefrom

The invention discloses a siloxane modified urethane acrylate hyperbranched oligomer and a preparation method thereof and a multi-curing coating obtained therefrom. The siloxane modified urethane acrylate hyperbranched oligomer is short for Si-PUA aligomer and the weight percentage composition thereof is as follows: 20 wt percent to 50 wt percent of vulcabond, 5 wt percent to 40 wt percent of polylol, 20 wt percent to 50 wt percent of hydroxyl acrylate, 1 wt percent to 20 wt percent of heperbranched polyester, 0.5 wt percent to 10 wt percent of diamino siloxane, 0.001 wt percent to 1 wt percent of catalyst, 0.001 wt percent to 1 wt percent of inhibitor and 5 wt percent to 50 wt percent of reactive diluent. The multi-curing coating containing such Si-PUA aligomer can not only realize ultraviolet light-heat dual curing but also realize moisture curing, thus improving the hardness and enhancing adhesive force of the film thereof and having better properties of water resistance, chemical agent resistance and friction resistance.
Owner:恒昌涂料(惠阳)有限公司 +1

Water-based fluorine-containing epoxy paint

The invention discloses water-based fluorine-containing epoxy paint. A preparation method of the water-based fluorine-containing epoxy paint comprises the following steps of (1) uniformly mixing absolute ethyl alcohol, amino siloxane and fluorine-containing siloxane under the condition of magnetic-force stirring, adjusting the pH value to 3-5, reacting for 45min to 65min at room temperature, thus obtaining the fluorine-containing and amino-containing siloxane sol, wherein the amino siloxane contains -NH2 or -NH-, and the fluorine-containing siloxane contains -CF2- or -CF3; (2) at room temperature, mixing the fluorine-containing and amino-containing siloxane sol with water-based epoxy resin emulsion, reacting for 0.5h to 1h under the condition of magnetic-force stirring, thus obtaining the modified water-based epoxy emulsion after the reaction; (3) at room temperature, adding polyamine curing agent into the modified epoxy emulsion and reacting for 10min to 20min under the condition of magnetic-force stirring, thus obtaining the water-based fluorine-containing epoxy paint. A coating prepared from the fluorine-containing epoxy paint has excellent hydrophobicity, chemical resistance, acid-alkali resistance and stain resistance and strong substrate combining force; the preparation method is simple, the cost is low, and the industrial production can be realized.
Owner:ZHEJIANG UNIV OF TECH
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