CN1229844A

CN1229844A - Method of preparing tableware cleaning agent

Info

Publication number: CN1229844A
Application number: CN 98104857
Authority: CN
Inventors: 焦益民; 黄运良; 杨中
Original assignee: XINJIANG ANALYTICAL TEST CENTER
Current assignee: XINJIANG ANALYTICAL TEST CENTER
Priority date: 1998-03-20
Filing date: 1998-03-20
Publication date: 1999-09-29
Anticipated expiration: 2018-03-20
Also published as: CN1072712C

Abstract

A detergent for tableware is prepared through the reaction between oil, cane sugar, cosolvent and catalyst at 80-150 deg.C for 6-8 hr while stirring to synthesize cane sugar ester with conversion rate higher than 80%, mixing it with surfactant, dissolving in water while stirring, and adding esence (0.05%) to obtain "green detergent".

Description

Preparation method of tableware detergent

The invention relates to a synthesis of sucrose ester and a preparation method of a detergent

At present, tableware cleaning products in international and domestic markets can be called as Firework, but the most spotlighted of people are pollution-free and high-quality 'green products', which have no irritation to skin, no residual poison, are convenient to clean and are popular, but if the production process is complex and the cost price is too high, manufacturers do not want to claim the production, and consumers are difficult to benefit.

The invention tries to prepare sucrose ester by a simpler synthetic method and then prepares a high-quality tableware detergent, so as to benefit from the public, and the patent literature does not report the preparation.

The sucrose ester surfactant is synthesized by taking sucrose and edible oil as raw materials, and is also an edible cosolvent and a food additive recommended by the food and agriculture organization and the world health organization (FAO, WHO) of the United nations. At present, there are many synthetic methods, which can be classified into acyl chloride esterification, ester exchange, direct dehydration and microbiological methods according to the reaction formula. The transesterification process is still used industrially, and the present invention also employs the transesterification process, but improvements are made in terms of solvents, emulsifiers and synthesis conditions.

The present invention changes the traditional method of synthesizing sucrose ester in several steps with DMF (N.N-dimethyl formamide-carcinogenic substance), propylene glycol, etc. as solvent, and adopts the method of directly mixing sucrose with animal and vegetable oil under normal pressure and in the state of no solvent to synthesize sucrose ester in one step.

The chemical reaction formula is as follows: fatty acid ester sucrose fatty alcohol

The preparation method of the tableware detergent comprises the following steps of synthesizing sucrose ester according to a formula in percentage by weight, wherein 45-55% of grease (natural and artificial animal and vegetable oil); 25% -35% of sucrose (industrial grade, crushed to 200 meshes); cosolvent 8-11% (including potassium fatty acid, sodium fatty acid, and fatty acid monoglyceride); 5-10% of catalyst (lithium hydroxide and anhydrous potassium carbonate) is put into a reactor, mixed and heated under normal pressure, stirred, the temperature is controlled between 80 and 150 ℃, and the reaction lasts for 6 to 8 hours, thus sucrose ester with the conversion rate of more than 80% can be synthesized by one step.

The key step of the preparation method of the tableware detergent is to synthesize the best embodiment of sucrose ester (weight percentage composition).

Example 1: coconut oil 51.2%, cane sugar 28.7% (crushed to 200 meshes), fatty acid potassium salt 9.1%, anhydrous potassium carbonate 8.5%, mixing and heating under normal pressure, stirring, controlling the temperature to be 80-150 ℃, and reacting for 6-8 hours to obtain the sucrose ester with the conversion rate of more than 80%.

Example 2: 49.7 percent of rapeseed oil, 32.6 percent of cane sugar (crushed to 200 meshes), 10.3 percent of fatty acid monoglyceride and 6.9 percent of lithium hydroxide are mixed and heated under normal pressure, stirred, the temperature is controlled between 80 and 150 ℃, and the reaction is carried out for 6 to 8 hours, thus obtaining the cane sugar ester with the conversion rate of more than 80 percent.

Example 3: 45.8 percent of rapeseed oil, 33.8 percent of cane sugar (crushed to 200 meshes), 10.4 percent of fatty acid monoglyceride and fatty acid potassium, and 5.6 percent of anhydrous potassium carbonate, under normal pressure, mixing and heating, stirring, controlling the temperature to be 80-150 ℃, and reacting for 6-8 hours to obtain the sucrose ester with the conversion rate of more than 80 percent.

The preparation method of the tableware detergent synthesizes sucrose ester which is required to be prepared, and according to the weight percentage, 2.5 percent to 5.0 percent of sucrose ester and 4.5 percent to 15.6 percent of surfactant (comprising α -alkenyl sulfonate, alkyl polyglycoside, coconut oil fatty acid monoethanolamine, fatty alcohol polyoxyethylene ether ammonium sulfate) are mixed and added into water, stirred and dissolved, and 0.05 percent of essence is added after full dissolution, thus obtaining the high-quality detergent product.

The preparation method of the detergent disclosed by the invention is characterized in that the formula of the embodiment still comprises the following components in percentage by weight.

Example 1: adding 3.5 wt% and 9.7 wt% of alkyl polyglycoside and fatty alcohol-polyoxyethylene ether into water, stirring to dissolve, adding 4.1 wt% of sucrose ester, stirring, and adding 0.05 wt% of essence to obtain the final product.

Example 2: adding 10.7 wt% of fatty alcohol-polyoxyethylene ether ammonium sulfate into water, fully stirring for dissolving, adding 4.7 wt% of sucrose ester and 2.7 wt% of coconut oil fatty acid monoethanolamine after dissolving, fully stirring uniformly, and adding 0.05% of essence to obtain the high-quality detergent product.

Example 3A high quality detergent product was prepared by adding α -alkenylsulfonate and alkylpolyglycoside to water at a weight ratio of 3.4% to 8.9%, stirring thoroughly to dissolve, adding 3.9% coconut oil monoethanolamine and 2.5% sucrose ester, stirring well, and adding 0.05% essence.

In conclusion, the preparation method of the tableware detergent is feasible and easy to manufacture, the cost price is 2.0 yuan/kg, the sale price is 3.5 yuan/kg, fruits and vegetables can be washed besides tableware, the tableware detergent belongs to a green detergent product, and the product meets the requirements of national GB9985-88 technical indexes.

Claims

1. The preparation method of tableware detergent is characterized by that the formula of synthetic sucrose ester is formed according to the weight percentage, and the oil and fat is 45% -55% (containing natural and artificial animal and vegetable oil); 25% -35% of sucrose (industrial grade, crushed to 200 meshes); cosolvent 8-11% (including potassium fatty acid, sodium fatty acid, and fatty glyceride); 5-10% of catalyst (lithium hydroxide and anhydrous potassium carbonate) is put into a reactor, mixed and heated under normal pressure, stirred, the temperature is controlled between 80 and 150 ℃, and the reaction lasts for 6 to 8 hours, thus sucrose ester with the conversion rate of more than 80% can be synthesized by one step.

2. The method for preparing a tableware detergent according to claim 1 comprises the step of preparing a synthetic sucrose ester, wherein the synthetic sucrose ester is prepared by mixing, by weight, 2.5% -5.0% of sucrose ester with 4.5% -15.6% of surfactant comprising α -alkenyl sulfonate, alkyl polyglycoside, coconut oil fatty acid monoethanolamine and fatty alcohol polyoxyethylene ether ammonium sulfate, adding the mixture into water, stirring the mixture to dissolve the mixture, and adding 0.05% of essence after the mixture is dissolved sufficiently to obtain a high-quality detergent product.