SU325080A1 - METHOD OF OBTAINING A BINDER - Google Patents
METHOD OF OBTAINING A BINDERInfo
- Publication number
- SU325080A1 SU325080A1 SU1269312A SU1269312A SU325080A1 SU 325080 A1 SU325080 A1 SU 325080A1 SU 1269312 A SU1269312 A SU 1269312A SU 1269312 A SU1269312 A SU 1269312A SU 325080 A1 SU325080 A1 SU 325080A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- salts
- vinyl
- copolymer
- binder
- alcohol
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000011230 binding agent Substances 0.000 claims description 8
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- -1 vinyl compound Chemical class 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical class CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 150000001735 carboxylic acids Chemical class 0.000 claims description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 8
- 239000004202 carbamide Substances 0.000 description 4
- 235000013877 carbamide Nutrition 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 241000237536 Mytilus edulis Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000011020 iolite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000020638 mussel Nutrition 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Description
Изобретение относитс к способам получееи св зующих дл литейного производства.This invention relates to methods for making binders for a foundry.
Известны способы получени св зующих на основе карбамидных смол, при которых в качестве модифицирующей добавки примен етс иоливиниловый спирт.Known methods for the preparation of binders based on carbamide resins, in which ivolyvinyl alcohol is used as a modifying additive.
Целью изобретени вл етс улучшение технологических и физико-мехаиических ciBO йс ов зующего.The aim of the invention is to improve the technological and physico-mechanical cIBO of the binder.
Это дОСтигаетс тем, что в его состав в качестве винильНого производного ввод т сополимер винилового спирта с сол ми ненасыщенных карбоновых кислот.This is due to the fact that a copolymer of vinyl alcohol with salts of unsaturated carboxylic acids is introduced into its composition as a vinyl derivative.
Способ приготовлени св зующего заключаетс в .модификации карба:мидиой смолы со,иоли.мером винилового спирта с солжми щелочных металлов (натри или кали ) а1Крилоеой или дметакриловой кислоты. КоличеCTIBO вводимого со юлимера зависит от требований к св зующему и составл ет 0,2- 5% (от карбамидной смолы).The method of preparation of the binder consists in the modification of the carba: mussel resin with, iolite, a measure of vinyl alcohol with alkali metal salts (sodium or potassium) a1Cryloy or dmethacrylic acid. The amount of CTIBO injected copolymer depends on the requirements for the binder and is between 0.2 and 5% (from the urea resin).
В емкость, снабженную мешалкой и обратным холодильником, загружают формалин 37% и карбамид 100% в мол рном соотношении 2:1, добавл ют уротрооии в количестве 5-10% ОТ загруженного количества карбамида. После растворени . карбамида смесь йагревают до кипени , и реакци проводитс при кипении реакционной массы (92-102°С) в течение 45-80 мин до рНFormalin 37% and urea 100% in a molar ratio of 2: 1 are added to a vessel equipped with a stirrer and reflux condenser in the amount of 5-10% of the loaded amount of urea. After dissolving. carbamide mixture is boiled until boiling, and the reaction is carried out at boiling the reaction mass (92-102 ° C) for 45-80 minutes to pH
4,0-5,5 и в зкости 4,0-10,0 сек по вискозиметру ВЗ-1.4.0-5.5 and viscosity 4.0-10.0 s by VZ-1 viscometer.
По достижении указанных показателей ввод т раствор ел1кого натра до рН средыWhen these indicators are achieved, a solution of Elk soda is introduced to pH
5,5-7,0 и реакционную массу охлаждают до 90-95°С. Затем ввод т от 1 до 20% сополимера винилового Спирта и калие1вой (натриевой или других щелочных металлов) соли акриловой или метакриловой кислоты. После5.5-7.0 and the reaction mass is cooled to 90-95 ° C. Then from 1 to 20% of a copolymer of vinyl alcohol and potassium (sodium or other alkali metals) salts of acrylic or methacrylic acid are introduced. After
растворени сололпмера охлажденце продолжают до 75°С и добавл ют 30-50% карба .мида от первоначально загруженного дл уменьшени содержани свободного формальдегида .After dissolving the sololpmer, the chill is continued to 75 ° C and 30-50% of the carbaide from the initial load is added to reduce the free formaldehyde content.
После выдержки реакционной массы в течение 30 мин лри 65-70°С готовый продукт охлаждают до температуры не выще 40°С.After holding the reaction mass for 30 minutes at 65-70 ° C, the finished product is cooled to a temperature not higher than 40 ° C.
Готовый продукт имеет следующие характеристики: плотность при 20°С 1,155-1,200; в зкость по ВЗ-1 4,0-40,0 сек (диаметр сопла. 5,4 мм); содерл-сание сзободнопо формальдегида не более 0,5%; растворимость в воде полна ; концентраци водородных ионюв 7,2-7,9; предел прочности при раст жении стандартны.х образцов .в сухом состо нии (|при 2% св зующего в-смеси) 20-30 кг/см ; предел прочности пр изгибе QQ кг/см.The finished product has the following characteristics: density at 20 ° С 1,155-1,200; VZ-1 viscosity 4.0-40.0 sec (nozzle diameter. 5.4 mm); free formaldehyde content is not more than 0.5%; water solubility is complete; hydrogen ion concentration of 7.2-7.9; ultimate tensile strength of standard samples in a dry state (| at 2% binder in a mixture) 20-30 kg / cm; ultimate strength bending QQ kg / cm.
Св зующее, полученное по предлагаемому способу, позвол ет получить стержни сложной 1конфи ру|ра1ции с повышенными физйиом еханичебкими показател ми механизврованными cnocodaiMH, в том числе в нагреваемой оонастке.The binder obtained by the proposed method allows one to obtain rods of a complex confinement with increased physical and mechanical parameters mechanized by cnocodai MH, including in the heated core.
Предмет изобретени Subject invention
Claims (3)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU325080A1 true SU325080A1 (en) |
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