85 results about "Propanolamine" patented technology

The invention discloses a hyperbranched polyphosphate amide ester and a preparation method of flame-retardant biodegradable polyester thereof. The hyperbranched polyphosphate amide ester is prepared in the following steps: firstly reacting such A3 monomers as phosphorus oxychloride with such BB' monomers as methanolamine, ethanolamine and propanolamine under the protection of nitrogen, and then, adding a catalyst and an acid binding agent to perform a polycondensation reaction to generate the hyperbranched polyphosphate amide ester through one-pot method. The molecular structure of the prepared hyperbranched polyphosphate amide ester simultaneously contains a phosphate bond and a phosphamide bond, and the prepared hyperbranched polyphosphate amide ester is biodegradable, so that when 2wt% of the synthesized hyperbranched polyphosphate amide ester is added in biodegradable polyester, the oxygen index reaches 30-35%, and UL-94 passes V-0 level. The prepared flame-retardant biodegradable polyester prepared by the invention keeps the biodegradability of the whole system, and the fire-retardant biodegradable polyester has better nucleation property. The flame-retardant biodegradable polyester can be used as fiber, engineering film and injection shaped piece.

The invention relates to a method for preparation of titanic anhydride which is easy to disperse and is of high weatherability. The method consists of selecting 0.1 %-0.5 % hexametaphosphate, 0.1 %-0.3 % isopropanolamine or triethanolamine as disperser, dispersing the titanic anhydride paste and adjusting the PH value of the sodium-hydroxide solution to 10-11, adding silicate of soda solution and dilute sulphuric acid to cover silica dioxide at 91-95 DEG C, in which the added quantity of the soda solution is 1 %-6 % of the silica dioxide, then adjusting the PH value to 6.5-8.5, adding aluminum sulfate solution and sodium-hydroxide solution, in which the added quantity of the aluminum sulfate is 2 %-3.5 % of the aluminum oxide,maturing for 10 min to cover the aluminum oxide, rinshing and drying, then adding some organosilicon additive, performing comminution by gas stream to obtain the said titanic anhydride which is easy to disperse and is of high weatherability. The advantages of this invention lie in that it can effectively guarantee the dispersion of the paste before mat-forming treatment, can carry out the coating of the inorganic mat-forming treatment in single grain surface of titanic anhydride, and can reach the attempt of improving the weatherability and the dispersibility of titanic anhydride.

The invention discloses a concrete early-strength agent, which is characterized in comprising the following components according to weight percentage: inorganic salt early-strength component 35-55 percent, organic early-strength component 5-10 percent, water reducing component 15-25 percent, wherein the inorganic salt early-strength component is prepared by at least two among sulfate, carbonate, nitrate, and nitrite; the organic early-strength component selects any one among calcium formate, sodium acetate, calcium oxalate, triethanolamine, tri-iso-propanolamine and carbamide; the water reducing component selects one among naphthalenesulfuric acid type, melamine type and polycarboxylate type. The invention makes the concrete be coagulated and hardened rapidly under the condition of low temperature, so that the early strength of the concrete is greatly improved as well as later strength is ensured.

The invention relates to a catalyst for continuously preparing 1,2-propylenediamine and a preparation method thereof. The weight percentage of the catalyst involved is: 2-15% Ni, 0.1-1.5% metal M 1 , 0.1~5% additive R 1 , 0.1~2.0% additive R 2 , 8-15% aluminum oxide, the rest is silicon oxide. The preparation method involved comprises making a solution of alcohol and 25% acidic silica sol in a volume ratio of 1:1 to 1:4; mixing nickel nitrate, soluble M 1 Metal salt, R 1 Auxiliary Salt and Auxiliary R 2 Add the precursor to the mixed solution, add isopropanolamine, and dissolve completely; let it stand for 0.5 to 24 hours; remove the solvent under reduced pressure; add alumina and graphite to the dried solid powder, mix evenly, granulate, and shape; roast to obtain the obtained The catalyst precursor; reduction in hydrogen to obtain the catalyst. The catalyst of the invention has good stability, performance is higher than that of the prior art, and has remarkable industrial application value.

Disclosed is a kind of polyurethane basic foaming agent comprising tertiary amine salt and propanolamine salt, the pH value of this basic foaming agent is between 8.5-9.5, and this foaming agent comprises: 1) contains the following general The first compound mixture (M1) of the organic tertiary amine salt compound class of formula (I): A ‑ [B + ] p (I), where B + Is the cation of +1-valent organic tertiary amine B, A ‑ Yes: CO 3 2‑ , HCO 3 ‑ , or CO 3 2‑ with HCO 3 ‑ 2) a second compound comprising N-monohydroxypropyl-ammonium carbonate compound of general formula (II) and N,N'-di(hydroxypropyl)-ammonium carbonate compound of general formula (II) A compound mixture (M2): (RN + h 3 )(N + h 4 )CO 3 2‑ (II), or (RN + h 3 ) 2 CO 3 2‑ (III), in the formula, R is hydroxypropyl; the molar ratio of the compound of general formula (II) to the compound of general formula (III) is 1:0 to 1:1.0. Blowing agents are suitable for use in the preparation of polyurethane spray foam materials.