SU467914A1 - Method for preparing modified resorcinol formaldehyde resins - Google Patents
Method for preparing modified resorcinol formaldehyde resinsInfo
- Publication number
- SU467914A1 SU467914A1 SU1918074A SU1918074A SU467914A1 SU 467914 A1 SU467914 A1 SU 467914A1 SU 1918074 A SU1918074 A SU 1918074A SU 1918074 A SU1918074 A SU 1918074A SU 467914 A1 SU467914 A1 SU 467914A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- formaldehyde resins
- preparing modified
- resorcinol formaldehyde
- modified resorcinol
- resins
- Prior art date
Links
Landscapes
- Phenolic Resins Or Amino Resins (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ МОДИФИЦИРОВАННЫХ рЕЗОРЦИНО-ФОРМАЛЬДЕГИДНЫХ СМОЛ(54) METHOD FOR OBTAINING MODIFIED RESORTS-FORMALDEHYDE RESINS
22
и продолжают конденсацию при рН среды j 8,3 в течение Зб мин. Полученный готовый продукт охлаждают до 2О°С и сливают в тару.and continue to condense at a pH of j of 8.3 for 3 min. The resulting finished product is cooled to 2 ° C and poured into the container.
Сравнительна характеристика клеев, полученных на основе модифицированной и немодифицированной смол приведена в таблице .Comparative characteristics of adhesives obtained on the basis of modified and unmodified resins are given in the table.
Прочность клеевого соединени ,Adhesive strength,
, 2, 2
кгс/см :kgf / cm:
дуб-дубoak-oak
сосна-сосна древесина-сибоцементpine-pine wood sibocement
Водостойкость по ГОСТ 17ОО5-71Water resistance according to GOST 17OO5-71
Врем отверждени до достижени указанной прочности, минCuring time to achieve the specified strength, min
Удаление летучих за сутки, % Внутренние напр жени , кгс/смRemoval of volatile per day,% Internal stresses, kgf / cm
Усадочные напр жени кле , полученного на основе модифицированной смолы, в среднем в два раза ниже, чем кле , полученного на основе немодифицированной смолы.The shrinkage stress of an adhesive made from a modified resin is, on average, two times lower than that obtained from an unmodified resin.
Предмет изобретени Subject invention
Снсюоб получени модифицированных ре )С;|лтио||)ормальдегидныхсмол путем введё в них производных неллюлозы в вод98/84-116 37/21. 45The synthesis of modified re) C; | ltio ||) ormaldehyde resins by introducing them into the water 98 / 84-116 37/21. 45
66/64-7166 / 64-71
24 18 4О24 18 4О
ных растворах, о т л и ч а ю ш и и с 30 тем, что, с целью обеспечени раБно.ер1юй скорости удалени летучих, снижени BOJJKчины внутренних напр жений н усадки при отверждении смол, производные пеллюпозы, например, метил-этил-или карбоксиметил35 целлюлозу, в виде водно1 о . ра ввод т в начальные продукты конденсации резорцинов с формальдегидом непос;|.)цд-. сгвенно в процессе получени смолы в ко™ личестве 0,15-3 вес. ч. на ЮО вес. ч. 40 резорцина.solutions, in order to ensure the effective removal rate of volatiles, to reduce the internal stresses and shrinkage during curing of the resins, pellulose derivatives, for example, methyl ethyl or carboxymethyl35 cellulose, in the form of a water o. ra are introduced into the initial condensation products of resorcinol with formaldehyde nepos; |.) cd-. in the process of obtaining the resin in a quantity of 0.15-3 wt. h on uo weight. h. 40 resorcinol.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1918074A SU467914A1 (en) | 1973-05-07 | 1973-05-07 | Method for preparing modified resorcinol formaldehyde resins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1918074A SU467914A1 (en) | 1973-05-07 | 1973-05-07 | Method for preparing modified resorcinol formaldehyde resins |
Publications (1)
Publication Number | Publication Date |
---|---|
SU467914A1 true SU467914A1 (en) | 1975-04-25 |
Family
ID=20552500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1918074A SU467914A1 (en) | 1973-05-07 | 1973-05-07 | Method for preparing modified resorcinol formaldehyde resins |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU467914A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0247975A2 (en) * | 1986-03-19 | 1987-12-02 | Ente per le nuove tecnologie, l'energia e l'ambiente (ENEA) | A polymer support for topo-chemical reactions; a process for its preparation, the support produced and its application |
-
1973
- 1973-05-07 SU SU1918074A patent/SU467914A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0247975A2 (en) * | 1986-03-19 | 1987-12-02 | Ente per le nuove tecnologie, l'energia e l'ambiente (ENEA) | A polymer support for topo-chemical reactions; a process for its preparation, the support produced and its application |
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