Topic
Methyl isobutyl ketone
About: Methyl isobutyl ketone is a research topic. Over the lifetime, 2071 publications have been published within this topic receiving 26976 citations. The topic is also known as: Hexone & Isobutyl methyl ketone.
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Patent•
26 Jun 1986
TL;DR: In this article, a bisphenol is made to react with formalin usually in the presence of an alkali metal hydroxide such as sodium hydroxides, preferably at 40-50 deg.
Abstract: PURPOSE:To obtain the titled compound useful as a curing agent effective to improve the heat-resistance and adhesivity of an epoxy resin, by removing the impurities from a reaction product of a bisphenol with formalin using a particular method, and reacting the product with a phenolic compound. CONSTITUTION:A bisphenol (e.g. bisphenol A) is made to react with formalin usually in the presence of an alkali metal hydroxide such as sodium hydroxide, preferably at 40-50 deg.C. The resultant 4-methylolated bisphenol is dissolved in an organic solvent (preferably methyl isobutyl ketone), and the solution is separated into the organic component and water. Formalin existing in the reaction product as a water-soluble impurity can be separated from the organic component by this process. The organic component is washed with pure water to effect the complete removal of formalin, and is made to react with a phenolic compound usually using oxalic acid as a catalyst to obtain the objective compound.
7 citations
Patent•
10 Feb 1994
TL;DR: In this paper, an organosilica sol is added to a precoated steel sheet to form a coating film with an excellent processibility and a high hardness by adding a high-molecular polyester resin and a melamine resin as the main components.
Abstract: PURPOSE:To obtain a coating compsn. for precoated steel sheet which forms a coating film with an excellent processibility and a high hardness by adding an organosilica sol to a coating compsn. contg. a high-molecular polyester resin and a melamine resin as the main components. CONSTITUTION:This compsn. contains a polyester resin having a hydroxyl value of, pref., 2-100 and a number-average mol.wt. of 3,000-50.000, a melamine resin pref. alkyl-etherified, and an organosilica sol in an amt. of 1-40wt.% (solid- basis) of the sum of the polyester and epoxy resins. An organosilica sol dispersed in a xylene-methanol mixture, methyl ethyl ketone, or methyl isobutyl ketone is esp. pref.
7 citations
Patent•
17 May 2017
TL;DR: In this paper, a method for preparing cyclopentanol by hydrating cyclopsene and acetic acid is presented. But the method is not suitable for the high energy consumption and high selectivity, high product yield and the like.
Abstract: The invention discloses a method for preparing cyclopentanol by hydrating cyclopentene. The method comprises the following steps: (1) performing addition reaction on cyclopentene and acetic acid under the action of modified sulfonic acid group cation exchange resin to produce cyclopentyl acetate, wherein the modified sulfonic acid group cation exchange resin is prepared by soaking the conventional sulfonic acid group cation exchange resin with methylbenzene and methyl isobutyl ketone sequentially; (2) enabling the material obtained in the step (1) to enter a rectifying tower, forming azeotrope with water on the lower part of the rectifying tower, performing hydrolysis reaction on the material and water under the action of a sulfonic acid group cation exchange resin catalyst filling the upper part of the rectifying tower, withdrawing a product cyclopentanol from the top of the tower and withdrawing acetic acid from the bottom of the tower. The method has the advantages of simple technical process, low energy consumption, high conversion rate, high selectivity, high product yield and the like.
7 citations
TL;DR: Results show that trickling period is an important parameter to achieve high removal performance and to maintain the robustness of Ralstonia sp.
Abstract: Biodegradations of methyl ethyl ketone and methyl isobutyl ketone were performed in intermittent biotrickling filter beds (ITBF) operated at two different trickling periods: 12 h/day (ITBF-12) and 30 min/day (ITBF-0.5). Ralstonia sp. MG1 was able to degrade both ketones as evidenced by growth kinetic experiments. Results show that trickling period is an important parameter to achieve high removal performance and to maintain the robustness of Ralstonia sp. MG1. Overall, ITBF-12 outperformed ITBF-0.5 regardless of the target compound. ITBF-12 had high performance recovery at various inlet gas concentrations. The higher carbon dioxide production rates in ITBF-12 suggest higher microbial activity than in ITBF-0.5. Additionally, lower concentrations of absorbed volatile organic compound (VOC) in trickling solutions of ITBF-12 systems also indicate VOC removal through biodegradation. Pressure drop levels in ITBF-12 were relatively higher than in ITBF-0.5 systems, which can be attributed to the decrease in packed bed porosity as Ralstonia sp. MG1 grew well in ITBF-12. Nonetheless, the obtained pressure drop levels did not have any adverse effect on the performance of ITBF-12. Biokinetic constants were also obtained which indicated that ITBF-12 performed better than ITBF-0.5 and other conventional biotrickling filter systems.
7 citations
TL;DR: The use of gas phase standards with sample matrix similar to the natural samples, allowed the permeation system to provide the most reliable results for the quantitation of the target analytes, including trimethylamine with SPME Arrow.
7 citations