SU698998A1 - Method of preparing glue - Google Patents

Description

(54) METHOD OF OBTAINING A CLAY

I

HioujjLicHiio will set out to get a paper sizing adhesive that can be used to remove HeriocpL-AciiRHHO glue from a paste.

The method of obtaining glue / VIM sizing iiywaiH HeiiocijeAcBeiiHO from purified nyicM modi (() ikadi by its small anhydride and 80–90 ° C with the following neu - ali -.) Acid and 25–40% with the following 25–40% with the next 25–40% C with the following neu - ali - -) and acid and 25–40. Mr Goy same temno ur. Then, take turpentine. After diluting the reaction mass with water, a paste-like glue 1 is obtained.

However, carrying out modifications of the resin at 80–90 ° C to ridge the addition of maleic anhydride with norps, which prolongs the modification process.

In addition to ioro, peyt alization of the reaction mass at the same temperature should also be carried out. When liocieneHiiOM is slowly added, a solution of sodium hydroxide and intensive mechanical stirring are added. It is known that the neu- trals:) a) of the mass of Hopo 1L1m solution P) of sodium droxide (20 ° С), especially solutions of increased con- blocking. In order to avoid this phenomenon of entering the plant, concentrated solutions of sodium hydroxide (40% and above) must be diluted to, which requires additional energy and weight energy ,. as well as additional production space.

The purpose of the invention is to intensify and reduce the cost of the production of the chickens.

This is achieved by the fact that in a known method for the production of gum from purified sap

by modifying it with malsinic acid and neutralizing the resulting reaction mass with a solution of sodium hydroxide and distilling turpentine, the resin is modified with maleic anhydride is carried out with a single injection

Claims (1)

total calculated amount of maleic anhydride in the sap, while neutralization and turpentine boiling are carried out simultaneously with intensive movement of the reaction mixture with streams of direct steam. Introducing a reaction mixture of the total calculated amount of maneic anhydride in one step causes a violent exotherm reaction, the heat of which, upon completion of the modification (within 3-5 minutes), raises the mass temperature to IIO-IIS C, significantly reducing its viscosity. The introduction of a concentrated solution of sodium hydroxide with a temperature of 1520 ° C at such a temperature of the reaction mass with vigorous stirring does not lead to a noticeable increase in the viscosity of the mass and the formation of solid lumps. Low viscosity allows, in turn, to use for mass mixing not mechanical agitators, but a jet of live steam, thus combining the processes of neutralization and distillation of turpentine during time mixing. Both of these processes do not exert mutual influence while flowing. In this case, the hot steam is supplied through a bubbler located at the bottom of the reactor. Example. 1900 kg of purified resin were loaded into the reactor with the content of 55.0% resin acids and 39.0% cKHfiH / iapa. At 90 ° C, 71.3 kg of mapeinic anhydride, i.e., the entire calculated amount (6-7% by weight of small sludge (.1x kilogram), is added in one pass to the gum, and the sap is modified with mechanical mixing) completing the modification and the temperature of the mass rises to 115 ° C. 1 () And this temperature is neutralized with 90% of resin acids by adding 176.9 kg of sodium hydroxide in the form of 07 (5% water solution and distilling turpentine with live steam) and as a mixing agent, Otyuik skitsdar is continued until it is contained in the reaction The mixture is no more than 2%. Then the reaction mass is diluted with water to a paste-like constipation. The total duration of the process is 240 minutes instead of 300 Miut but according to the technological procedure of the Borisov paper and wood-chemical plant. em 30-50% compared with ordinary kasfolnym glue. Sizing quality is the same as when sizing fortified kepe (l ,. obtained according to the prototype. The invention The method is sex by modifying the meat with maleic anhydride, Heyralisation and the resulting reaction mass with a solution of hydrochloride and distillation, turpentine, ol and h and K), and so that, Introducing the amount of maleic anhydride into the sap, and neigralisacin) and turpentine distillation were carried out simultaneously with the intrinsic intermixing and reaction mixtures of sharp punishment. Sources of information, prinimayutsya at the examiner I I. Avyurskoe certificate of the USSR № 181614, cl. from 09 F 1/04, 09.05.65, npoioiHii.