PL128569B1 - Method of obtaining thermoplastic phenol-formaldehyde resins - Google Patents

Method of obtaining thermoplastic phenol-formaldehyde resins Download PDF

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Publication number
PL128569B1
PL128569B1 PL23046881A PL23046881A PL128569B1 PL 128569 B1 PL128569 B1 PL 128569B1 PL 23046881 A PL23046881 A PL 23046881A PL 23046881 A PL23046881 A PL 23046881A PL 128569 B1 PL128569 B1 PL 128569B1
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PL
Poland
Prior art keywords
formaldehyde resins
thermoplastic phenol
obtaining thermoplastic
phenol
weight
Prior art date
Application number
PL23046881A
Other languages
English (en)
Other versions
PL230468A1 (pl
Inventor
Marian Gryta
Henryk Wojtal
Marian Pepera
Jerzy Majchrzak
Krzysztof Wegrzyn
Genowefa Czarnecka
Tadeusz Zyla
Original Assignee
Inst Ciezkiej Syntezy Orga
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 Inst Ciezkiej Syntezy Orga filed Critical Inst Ciezkiej Syntezy Orga
Priority to PL23046881A priority Critical patent/PL128569B1/pl
Publication of PL230468A1 publication Critical patent/PL230468A1/xx
Publication of PL128569B1 publication Critical patent/PL128569B1/pl

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  • Phenolic Resins Or Amino Resins (AREA)

Claims (1)

1. Zastrzezenia patentowe Sposób wytwarzania zywic noY.olakowych do tloczyw na drodze kondensacji fenolu z formaldehydem w. srodowisku kwasnym, znamienny t y a, za kondensacje prowadzi przy stosunku molowym fenolu do formaldehydu jak 0,8-0,9x1 w obacnesci kwasu szczawiowego jako katalizatora, uzytego w ilosci 0,3 - 1*4 % wag* korzystnie 0,6 - 0,8 % wag* w stosunku io zawartosci fenolu, przy czym proces kondansacji prowadzi sie w temperaturze wrzenia mieszaniny reakcyjnej az do momentu ^zjskania produktu o wspólczynniku zalamania swiatla9 n~ = 1,605 ± 0,006, po czym przerywa sie proces kondensacji i otrzymana zywice odwadnia w znany sposób pod obnizonym cisni3niem* PL
PL23046881A 1981-03-31 1981-03-31 Method of obtaining thermoplastic phenol-formaldehyde resins PL128569B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL23046881A PL128569B1 (en) 1981-03-31 1981-03-31 Method of obtaining thermoplastic phenol-formaldehyde resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL23046881A PL128569B1 (en) 1981-03-31 1981-03-31 Method of obtaining thermoplastic phenol-formaldehyde resins

Publications (2)

Publication Number Publication Date
PL230468A1 PL230468A1 (pl) 1982-10-11
PL128569B1 true PL128569B1 (en) 1984-02-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
PL23046881A PL128569B1 (en) 1981-03-31 1981-03-31 Method of obtaining thermoplastic phenol-formaldehyde resins

Country Status (1)

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PL (1) PL128569B1 (pl)

Also Published As

Publication number Publication date
PL230468A1 (pl) 1982-10-11

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