Other

Semen F Sholk

Nikolai S Enikolopov

Valentin P Krasnokutsky

Susanna M Karpacheva

Mikhail G Brusilovsky

Viktor A Pekarsky

Anatoly I Nepomnyaschy

Ivan V Zhigarev

Mikhail A Markevich

Jury R Svidler

Jury M Brodsky

Valeryan M Muratov

Valentin F Kostylev

Lev A Fedotov

Oleg K Maimur

Nikolai N Begunov

Vadim A Knyazev

Arkady L Iljushin

Svetlana A Gavrilina

Tatyana A Pekarskaya

Lidia P Khorkhorina

Naum D Lerman

Boris B Kudryavtsev

According to the invention, a cartridge filter for cleaning liquids and gases from mechanical impurities comprises compartments containing filtering cartridges, a pressure difference indicator and a control unit. The compartments are provided with cover plates having pipes for filtering and cleaning the compartments containing the cartridges, perforated guides and a spring device for locking the cartridges. The filter is also provided with mechanisms for moving the compartments and cover plates and a device for storing and replacing the filtering cartridges. The filter according to the invention enables an improved productivity owing to the elimination of manual operations of disassembly, replacement of cartridges and assembly of the filter, compliance with sanitary requirements and reduction of losses of filtered product.

Cartridge filter

A process for preparing epoxy resin comprises a step of allowing a mixture of epichlorohydrin, 2,2-bis(p-hydroxyphenyl)propane, and a solvent in the presence of an alkali used in an amount of from 0.4 to 5% by weight of the epichlorohydrin to stay at a temperature of from 45.degree. to 70.degree. C. to obtain a homogeneous mass. Subsequently an alkali used in an amount of from 45 to 50% by weight of the epichlorohydrin is added to the resultant mass, and polycondensation is conducted at a temperature of 70.degree. to 90.degree. C. under stirring to obtain the end product.

Process for preparing epoxy resin

Growing community of inventors

Moscow, Russia

Semen F Sholk