SU105833A1 - Method for preparing phenoplasts from phenolic-formaldehyde novolac resins and hardeners - Google Patents

Method for preparing phenoplasts from phenolic-formaldehyde novolac resins and hardeners

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Publication number
SU105833A1
SU105833A1 SU454539A SU454539A SU105833A1 SU 105833 A1 SU105833 A1 SU 105833A1 SU 454539 A SU454539 A SU 454539A SU 454539 A SU454539 A SU 454539A SU 105833 A1 SU105833 A1 SU 105833A1
Authority
SU
USSR - Soviet Union
Prior art keywords
phenoplasts
hardeners
phenolic
preparing
novolac resins
Prior art date
Application number
SU454539A
Other languages
Russian (ru)
Inventor
Л.С. Калинина
Н.Е. Огнева
Г.С. Петров
Original Assignee
Л.С. Калинина
Н.Е. Огнева
Г.С. Петров
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Л.С. Калинина, Н.Е. Огнева, Г.С. Петров filed Critical Л.С. Калинина
Priority to SU454539A priority Critical patent/SU105833A1/en
Application granted granted Critical
Publication of SU105833A1 publication Critical patent/SU105833A1/en

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  • Phenolic Resins Or Amino Resins (AREA)

Description

В производстве изделий из феиольно-формальдегидных пресспорошков существенное значение имеют такие качествественныс харак теристики иресспорошка, как скорость отверждени  и температура ирессоваии . При повышенных скорост х отверждени  пресспорошков li пониженных температурах прессовани  значительно возрастает производительность прессов п снижаетс  себестоимость выпускаемых изделий из фенопластов.In the production of products from feiol-formaldehyde mass powders, such qualitative characteristics and pressure powders as the curing rate and temperature and stress level are essential. At higher curing speeds of li liquefaction powders and lower pressing temperatures, the productivity of presses increases considerably; the cost of manufactured products from phenoplasts decreases.

Предлагаетс  способ получени  из феионластов ирссспороиков, обладающих повынгепиой скоростью отверждени  и способностью прессоватьс  при понижениых температурах . Способ заключаетс  в том, что новолачна  фенольно-формальдегидна  смола нредварительно подвергаетс  окислению 5%-ным раствором перекиси водорода. Окисление проводитс  при температуре 95-100° в течение 10 часов, после чего окислеппую смолу, освобожденпую в процессе окнслегнч  от примесей пнзкомолекул рных продуктов (фенола, фенолоспиртов, диоксидифенилметанов ) подвергают сушке под вакуумом при температуре 110-120° п далее используют дл  приготовлени  нресспорошков по рецептуре п технологии, прни той в промышленности (jjenonластов.A method is proposed for producing ironsporic from pheionlasts, which have a drying rate of curing and the ability to compress at lower temperatures. The method consists in the fact that the Novolac phenolic formaldehyde resin is preliminarily subjected to oxidation with a 5% hydrogen peroxide solution. The oxidation is carried out at a temperature of 95-100 ° C for 10 hours, after which the oxidized resin released in the course of the process is free from impurities of pscol molecular products (phenol, phenol alcohols, dioxidiphenylmethanes) is dried under vacuum at a temperature of 110-120 ° C and then used to prepare powders according to the recipe and technology used in industry (jjenonlasts.

Полученные на окисленной новолач ой смоле пресснздели  с древесной мукой в качестве напо.лните; Я обладают улучшенными качественными показател ми: удельна  ударна  в зкость 7-7 кгсл1/см сопротив .тение изгибу 800 кг1см теплостойкость 130-140 -н по диэлектрическим показател м.Obtained on an oxidized Novolac resin, press presses with wood flour as a nap; I have improved qualitative indicators: specific impact viscosity of 7–7 kg / 1 cm –1 resistance to bending of 800 kg – 1 cm heat resistance 130–140 n in terms of dielectric indices.

В качестве отверждающего средства в npeccnopoinoK из окисленной поволачной смолы добавл ют 3-полиоксиметнлеп .As a curing agent, 3-polyoxymethlene is added to the npeccnopoinoK from the oxidized pulp resin.

Предмет изобретени Subject invention

Способ получени  фенопластов из новолачньгх фенол ьно-форм альдегидных смол и отвердителей, отл иJ 1058S3 - i чающийс  тем, что, с целью ус-5%-г;ык раствором перекиси водокорени  процесса отверждени  крода при нагревании и отверждениеThe method of obtaining phenoplasts from novolnich phenol nano-forms of aldehyde resins and hardeners, iJ 1058S3 - i is that, with the aim of us-5%; k, the solution of curing of scum during heating and curing

снижени  температуры прессовгыи ,провод т с добавкой З полиоксиноволачную тмолу обрабатываютметало;{а.decreasing the temperature of the press, the polyoxine-volatile tmola is treated with an additive and treated with a metal; {a.

SU454539A 1954-05-15 1954-05-15 Method for preparing phenoplasts from phenolic-formaldehyde novolac resins and hardeners SU105833A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU454539A SU105833A1 (en) 1954-05-15 1954-05-15 Method for preparing phenoplasts from phenolic-formaldehyde novolac resins and hardeners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU454539A SU105833A1 (en) 1954-05-15 1954-05-15 Method for preparing phenoplasts from phenolic-formaldehyde novolac resins and hardeners

Publications (1)

Publication Number Publication Date
SU105833A1 true SU105833A1 (en) 1956-11-30

Family

ID=48379195

Family Applications (1)

Application Number Title Priority Date Filing Date
SU454539A SU105833A1 (en) 1954-05-15 1954-05-15 Method for preparing phenoplasts from phenolic-formaldehyde novolac resins and hardeners

Country Status (1)

Country Link
SU (1) SU105833A1 (en)

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