SU57965A1 - Method for producing synthetic resins in plastics - Google Patents

Description

The problem of replacing phenol in the production of plastics with cheaper and less scarce materials has now become of exceptional importance. As is well known, in recent years, partial authors of phenol substitutes have recently proposed oxycarboxylic acids, heat treatment products of bochgues, protein wastes (soybeans 1), and others. Most of these substitutes are low-grade substitutes for phenol. their production is associated with known costs, since in most cases they are not waste from one production or another. For example, the preparation of hydroxycarboxylic acids is associated with the necessity of oxidizing coal. of oil and complex decomposition of oxidation products into carbonic and yuxicarboxylic acids by saponification and extraction with gasoline. The use of boarchs is associated with the need for their thermal treatment. In both cases, it is difficult to obtain a standard product .;

According to the present M3o6peTeFBiK, it is proposed to use the mole as a partial substitute for phenol as a result of improving the raw brown coal wax according to the method described in copyright certificate JVb 53230. melting it 60-65 acid number 30-65. the number is saponified and 90-120.

In a mixture with phenol, the brown coal tar is condensed with the aldehydes and further heated by doping.

The resin can be used not in complex condensation with phenol and aldehydes (as a partial substitute for phenol), but also in the production of plastics such as asphalt pitch, in the production of gramophone records If, etc.

Example I. A mixture of 50 wt. including resin from lignite wax, 50.5 wt. including phenol (EE / o-go), 75 wt. including formalin (38 / o-go) and 6-8 wt. The caustic soda is heated for 1 hour in a 90–95 ° C water bath and mechanically stirred. The resulting resin is subjected to dehydration by drying the Lod vacuum with a temperature of 50-60 ° n 4Q mm residual pressure. The output of the resin is about 108 weight. h

Example 2. The same as in p & rv & m Armmer, and as catalysis

Jur.j 11 () .- 1 STS mixture of 2 wt. h caustic ||; p) l and 1G) weight. h. solution. | milka (2 State / () - th).

111 and m 1 1. A mixture of 50 wt. h resin i.h fiypoyrcvibtforo wax, 50.5 isch. m. fopoll) - | o), (Yu weight. h. (| urfu | k) la and 8 ness. h. caustic soda and; || - | nilot from and turning h. pas oil ion G) ano at a temperature of 120 and mechanical unceasing. Obrammine about gmo.cha dried with the usual C11 (:; () (k) M under vacuum; and exit dry cMo.nii - I4J carried. h

The resin obtained by the methods indicated in 1m and examples 1-3, solution1) H1f from CfHipTo and .ch is even better in a mixture of alcohol with 6eFi3o; iOM (1: 1) with an additive (but not similar, and mixed with filler (wood .muKoii), BwcyHiHRaioT, crushed V. powder and subjected to pressing at a temperature of about 140-160 and a pressure of 200-300 KS / cm -. The impact strength of normal bars made of such a Product was 4-4.5 kg / cm -, Brinell hardness - 800-1100 kg / cm. hygroscopicity

about 0.2–0 ,, water resistance 0.7–1.5., Strength in small bars increases greatly when wood flour is replaced with asbestos, linter, cotton wool and cotton wool.

The subject matter of the invention.

1. A method of obtaining synthetic resins and plastics Pz them by complex condensation of phenols with aldehydes in the presence of catalysts, with the addition to | An extract mixture of a brown coal tar, characterized in that the resin used in the latter is isolated as a result of the refining of J.-, crude brown coal wax according to the method described in the author's certificate No. 53230.

2. Application of the resin, descriptions in paragraph 1, for the manufacture of plastics by mixing with fillers, asbestos, bakelization accelerators and the like.