RU2030411C1 - Di-(2-tetrahydrofurylhydroxy)propane as a reagent for etching of paint and varnish coating - Google Patents
Di-(2-tetrahydrofurylhydroxy)propane as a reagent for etching of paint and varnish coating Download PDFInfo
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- RU2030411C1 RU2030411C1 SU4951963A RU2030411C1 RU 2030411 C1 RU2030411 C1 RU 2030411C1 SU 4951963 A SU4951963 A SU 4951963A RU 2030411 C1 RU2030411 C1 RU 2030411C1
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- Prior art keywords
- reagent
- paint
- propane
- enamel
- tetrahydrofurylhydroxy
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- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 11
- 238000000576 coating method Methods 0.000 title claims abstract description 4
- 239000003973 paint Substances 0.000 title claims abstract 4
- CGEKZSKQAQNHOO-UHFFFAOYSA-N 2-[2-(oxolan-2-yloxy)propan-2-yloxy]oxolane Chemical compound O1C(CCC1)OC(C)(C)OC1OCCC1 CGEKZSKQAQNHOO-UHFFFAOYSA-N 0.000 title claims abstract 3
- 238000005530 etching Methods 0.000 title claims description 4
- 239000002966 varnish Substances 0.000 title abstract 3
- 239000011248 coating agent Substances 0.000 title abstract 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000001294 propane Substances 0.000 claims description 2
- 210000003298 dental enamel Anatomy 0.000 abstract description 11
- 150000001875 compounds Chemical class 0.000 abstract description 7
- ARGCQEVBJHPOGB-UHFFFAOYSA-N 2,5-dihydrofuran Chemical compound C1OCC=C1 ARGCQEVBJHPOGB-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 230000037452 priming Effects 0.000 abstract 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 10
- 239000002689 soil Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229940125904 compound 1 Drugs 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 239000012259 ether extract Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Paints Or Removers (AREA)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Изобретение относится к новому химическому соединению - ди-(2-тетрагидрофурилокси)-пропану (1), который может быть использован в качестве реагента для травления лакокрасочных покрытий (ЛКП). The invention relates to a new chemical compound - di- (2-tetrahydrofuryloxy) -propane (1), which can be used as a reagent for etching coatings (LCP).
Известно, что в качестве реагента для снятия лакокрасочного покрытия применяется N-метилпирролидон-2 формулы [1]. It is known that N-methylpyrrolidone-2 of the formula [1] is used as a reagent for removing paintwork.
Целью изобретения является изыскание реагента, позволяющего увеличить скорость снятия лакокрасочного покрытия с поверхности металла. The aim of the invention is to find a reagent that can increase the speed of removal of the paintwork from the metal surface.
Поставленная цель достигается тем, что в качестве такого реагента применяется ди-(2-тетрагидрокси)пропан, которое получают при смешивании 2,5-дигидрофурана и пропандиола-1,3 в присутствии соляной кислоты. The goal is achieved in that as such a reagent, di- (2-tetrahydroxy) propane is used, which is obtained by mixing 2,5-dihydrofuran and propanediol-1,3 in the presence of hydrochloric acid.
П р и м е р. К 1 моль пропандиол-1,3 добавляют 1-2 капли конц. HCl и прибавляют 2 моль 2,5-дигидрофурана с такой скоростью, чтобы температура реакционной смеси не превышала 35-40оС. Смесь оставляют стоять на ночь и затем реакционную смесь разлагают 0,1 н.раствором КОН. Водный слой отделяют, экстрагируют эфиром. Органический слой объединяют с эфирными вытяжками, сушат, растворитель отгоняют. Остаток перегоняют под вакуумом собирают фракцию 115-117оС 5 мм рт.ст.). Выход 0,84 моля (84%).PRI me R. To 1 mol of propanediol-1,3 add 1-2 drops conc. HCl and add 2 mol of 2,5-dihydrofuran at a rate such that the temperature of the reaction mixture did not exceed 35-40 ° C. The mixture was allowed to stand overnight and then the reaction mixture was decomposed with 0.1 n.rastvorom KOH. The aqueous layer was separated, extracted with ether. The organic layer is combined with ether extracts, dried, the solvent is distilled off. The residue is distilled under vacuum and the fraction 115-117 ° C 5 mm Hg). Yield 0.84 mol (84%).
Структура полученного соединения была доказана с помощью элементного анализа, данным ПМР и масс-спектров. Брутто-формула С11Н20О4.The structure of the obtained compound was proved using elemental analysis, data of PMR and mass spectra. The gross formula is C 11 H 20 O 4 .
Вычислено/найдено, мас.%: C 61,09/61,24; H 9,38/9,16. Calculated / found, wt.%: C 61.09 / 61.24; H 9.38 / 9.16.
m/z (Iотн): [M] +. 216 (01); [M-H]+ 215 (1); [M-CH2O]+ 186 (0,5); [M-C4H7O] + 145 (60); [M--C4H7O2] + 129 (50); [C4H7O2] + 87 (98); [C4H7O] + 71 (100); (б,м.д.): 1,8 м (2Н), 2,0 м (8Н), 3,8 м (4Н), 4,1 (4Н), 5,1 т (2Н).m / z (I Rel ): [M] +. 216 (01); [MH] + 215 (1); [M-CH 2 O] + 186 (0.5); [MC 4 H 7 O] + 145 (60); [M - C 4 H 7 O 2 ] + 129 (50); [C 4 H 7 O 2 ] + 87 (98); [C 4 H 7 O] + 71 (100); (b, ppm): 1.8 m (2H), 2.0 m (8H), 3.8 m (4H), 4.1 (4H), 5.1 t (2H).
Для экспериментальной проверки моющих свойств соединения 1 была исследована моющая способность по отношению к двум слоям эмали АС-1115 с подложками грунтов АК-069 и АК-070 соответственно, а также по отношению к двум слоям эмали ПФ-223. Нанесение грунта и эмали ведут пульверизатором, причем толщина слоя покрытия равна 40 г/м2 поверхности. На слой эмали наносят испытуемое соединение, которое выдерживают определенное время при 20оС, далее краситель снимают с поверхности металла.For an experimental verification of the washing properties of compound 1, the washing ability was studied with respect to two layers of AC-1115 enamel with soil substrates AK-069 and AK-070, respectively, as well as with respect to two layers of PF-223 enamel. The application of soil and enamel is carried out with a spray, and the thickness of the coating layer is 40 g / m 2 surface. On the enamel layer is applied to the test compound, which can withstand a certain time at 20 ° C, further dye is removed from the metal surface.
Соединение I вводили в рецептуру технического моющего средства "АФТ-1", используемого для удаления старых ЛКП, вместо органического растворителя в количестве 84%. Данные испытаний даны в таблице. Compound I was introduced into the formulation of the technical detergent "AFT-1" used to remove old paintwork, instead of an organic solvent in an amount of 84%. Test data are given in the table.
В аналогичных условиях 2 слоя эмали АС-1115 со слоем грунта АК-069 снимается за 50 мин, 2 слоя эмали АС-1115 и слой грунта АК-070 - 60 мин, 2 слоя эмали ПФ-223 - за 40 мин. N-метилпирролидоном-2. Under similar conditions, 2 layers of AC-1115 enamel with a layer of soil AK-069 can be removed in 50 minutes, 2 layers of enamel AC-1115 and a layer of soil AK-070 - 60 minutes, 2 layers of enamel PF-223 - in 40 minutes. N-methylpyrrolidone-2.
Таким образом, соединение 1 при 20оС за 10 мин удаляют до металла 2 слоя ПФ-223. Время удаления эмали АС-1115 (грунт АК-069) - 15 мин и эмали АС-1115 (грунт АК-070) - 20 мин. Удаление ЛКП соединением I в три раза быстрее, чем чистым N-метилпирролидоном-2.Thus, compound 1 at 20 ° C for 10 min to remove metal 2 PF-223 layer. The removal time of the AC-1115 enamel (AK-069 primer) is 15 minutes and the AC-1115 enamel (AK-070 primer) is 20 minutes. Removing LCP with compound I is three times faster than with pure N-methylpyrrolidone-2.
Claims (1)
в качестве реагента для травления лакокрасочных покрытий.Di- (2-tetrahydrofuryloxy) propane of the formula
as a reagent for etching coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4951963 RU2030411C1 (en) | 1991-06-28 | 1991-06-28 | Di-(2-tetrahydrofurylhydroxy)propane as a reagent for etching of paint and varnish coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4951963 RU2030411C1 (en) | 1991-06-28 | 1991-06-28 | Di-(2-tetrahydrofurylhydroxy)propane as a reagent for etching of paint and varnish coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2030411C1 true RU2030411C1 (en) | 1995-03-10 |
Family
ID=21582699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU4951963 RU2030411C1 (en) | 1991-06-28 | 1991-06-28 | Di-(2-tetrahydrofurylhydroxy)propane as a reagent for etching of paint and varnish coating |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2030411C1 (en) |
-
1991
- 1991-06-28 RU SU4951963 patent/RU2030411C1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР N 998500, кл. C 11D 3/48, 1981. * |
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