SU129815A1 - The method of obtaining melamine-formaldehyde resins - Google Patents
The method of obtaining melamine-formaldehyde resinsInfo
- Publication number
- SU129815A1 SU129815A1 SU636503A SU636503A SU129815A1 SU 129815 A1 SU129815 A1 SU 129815A1 SU 636503 A SU636503 A SU 636503A SU 636503 A SU636503 A SU 636503A SU 129815 A1 SU129815 A1 SU 129815A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- melamine
- formaldehyde resins
- obtaining melamine
- obtaining
- formalin
- Prior art date
Links
Description
Известен способ получени меламино-формальдегидных смол на основе меламина, примен емых дл изготовлени дугостойких прессматериалов .A known method for the preparation of melamine-formaldehyde resins based on melamine used to make arc-resistant press materials.
Описываемый способ по сравнению с известным повышает теплостойкость и стабильность смол. Особенность способа заключаетс в том, что конденсацию меламина ведут со смесью формалина и фурфурола с последующим введением в продукт конденсации триэтаноламина.The described method in comparison with the known increases the heat resistance and stability of the resin. A feature of the process is that melamine condensation is carried out with a mixture of formalin and furfural, followed by the introduction of triethanolamine into the condensation product.
Пример. 1 моль меламина, 1,5-2,0 моль формальдегида (в виде 25-30%-ного формалина), 0,13-0,26 моль фурфурола при рН среды 7,4-8,4 совместно конденсируют при 80-90° до водного числа 3,,0. Затем добавл ют триэтаноламин в количестве 1,5-4% от загруженного меламипа. Смешение готовой смолы с компонентами и смазывающим веществом может быть произведено по водпоэмульсионному или по суховальцовому способу.Example. 1 mol of melamine, 1.5-2.0 mol of formaldehyde (in the form of 25-30% formalin), 0.13-0.26 mol of furfural at pH of 7.4-8.4 together condense together at 80-90 ° to the water number 3,, 0. Triethanolamine is then added in the amount of 1.5-4% of the loaded melamine. Mixing the finished resin with the components and the lubricant can be made by water-emulsion or dry-groove method.
Рецептура пресскомпозиции (в %%):Prescription recipe (%%):
а)по водноэмульсионному способуa) by the water emulsion method
смола40-58resin40-58
целлюлоза хлопкова 10cotton pulp 10
Асбест хризотиловый24-15Chrysotile asbestos24-15
тальк24-15talc24-15
стеарат кальци 2calcium stearate 2
б)по суховальцовому способуb) by dry groove method
смола 40-49resin 40-49
асбест хризотиловый29-24,5chrysotile asbestos29-24,5
тальк29-24,5talc29-24,5
стеарат кальци 2calcium stearate 2
№ 129815- 2 -No. 129815-2 -
Предмет изобретени Subject invention
Способ получени меламино-формальдегидных смол, примен емых дл изготовлени дугостойких прессматериалов на основе меламина, отличающийс тем, что, с целью повышени теплостойкости и стабильности смол, конденсацию меламина ведут со смесью формалина и фурфурола с последующим введением в продукт конденсации триэтаноламина .The method of producing melamine-formaldehyde resins used to make arc-resistant melamine-based press materials, characterized in that, in order to increase heat resistance and stability of the resins, melamine condensation is carried out with a mixture of formalin and furfurol, followed by the introduction of triethanolamine into the condensation product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU636503A SU129815A1 (en) | 1959-08-14 | 1959-08-14 | The method of obtaining melamine-formaldehyde resins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU636503A SU129815A1 (en) | 1959-08-14 | 1959-08-14 | The method of obtaining melamine-formaldehyde resins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU129815A1 true SU129815A1 (en) | 1959-11-30 |
Family
ID=48400957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU636503A SU129815A1 (en) | 1959-08-14 | 1959-08-14 | The method of obtaining melamine-formaldehyde resins |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU129815A1 (en) |
-
1959
- 1959-08-14 SU SU636503A patent/SU129815A1/en active
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