JPS60197800A - Manufacture of sculptural matter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a material for engraving. For more information,
The present invention relates to a method for producing a material for engraving using soap that has elasticity and hardness suitable for engraving, is not brittle, and has excellent workability during engraving.

Traditionally, ordinary soaps have been produced by hydrolyzing fats and oils at high temperature and pressure and neutralizing the separated fatty acids (decomposition rate of 99% or more) with caustic soda, or by completely saponifying fats and oils with caustic soda and then producing soap. A manufacturing method has been adopted in which soap waste containing glycerin is removed by salting out.

The soap obtained in this way is hard and brittle;
Since it does not swell in water, it is used for washing, hand washing, etc., but it is not elastic and is not suitable for carving. That is, these soaps tend to crack or become brittle when engraved, and their surfaces dry out and crack when left for a long period of time.

Characteristics of the material used for engraving include: not deforming when stored, not cracking or becoming brittle when engraved, having a smooth surface, and having a light color. is required.

A material for engraving having the above characteristics is 50-70% by weight of IJum salt (fatty acid obtained by decomposing refined oils and fats).
, glycerin 1.5-3.0% by weight, inorganic salt 10-20
It is obtained from a composition consisting of 18 to 3896% by weight and water. In order to obtain these compositions using conventional methods, for example, the method of blending other components with the sodium salt of fatty acids requires a complicated number of steps such as decomposition of fats and oils, purification of the fatty acids obtained by decomposition, and neutralization. The sodium salt is expensive, and glycerin in fats and oils is not utilized, making it uneconomical.

Furthermore, in the method of saponifying fats and oils with caustic soda, it has been impossible to obtain sodium salts of fatty acids containing glycerin because the glycerin produced by saponification is transferred to the aqueous phase and removed during salting out.

The inventors of the present application focused on the above-mentioned drawbacks and, as a result of intensive research, discovered a method that requires fewer manufacturing steps and can effectively utilize glycerin in fats and oils, resulting in the present invention.

That is, the present invention is a process for producing enzymatically decomposed fatty acids by hydrolyzing refined oils and fats with lipolytic enzymes, and in the process of producing enzymatically decomposed fatty acids, the decomposition production rate of fatty acids is stopped at about 70%, and refined oils and fats or partially decomposed glycerides are contained. Obtain an enzymatically decomposed fatty acid, then neutralize the enzymatically decomposed fatty acid with caustic soda, saponify it, add an inorganic salt to the resulting soap, knead it mechanically, and extrude it into a rod-shaped or plate-shaped material. This is a method for producing a material for engraving, which contains 1.5 to 3% by weight of glycerin produced by saponifying purified oil or partially decomposed glyceride in the saponification step.

The refined oils and fats used in the present invention include animal and vegetable oils such as beef tallow, lard, fish oil, coconut oil, and palm kernel oil. , decolorized to produce refined oils and fats.

The enzymatically decomposed fatty acids of the present invention can be obtained by stopping the decomposition production rate of fatty acids at about 70% in the process of producing enzymatically decomposed fatty acids from refined oils and fats using fat-degrading enzymes. For example, add 30 to 80 parts of water and 0.01 to 0.05 parts of fat-degrading enzyme to 100 parts of purified oil and adjust the pH to 4 with an acetic acid aqueous solution.
After adjusting the temperature to ~6 and reacting at 10 to 50°C for 4 to 24 hours,
Obtained by separating the aqueous phase.

As the lipolytic enzyme, a lipase that hydrolyzes fats and oils into fatty acids and glycerin is used, and examples thereof include watermelon liver lipase, milk lipase, vegetable lipase, and microbial lipase.

The obtained enzymatically decomposed fatty acids contain the purified oil or partially decomposed glyceride used, and in order to neutralize and saponify this to obtain the composition of the engraving material, the necessary amount is required to neutralize and saponify the enzymatically decomposed fatty acids. Add an aqueous solution of caustic soda with a concentration of 20 to 70% by weight, equimolar to the amount, to the enzymatically decomposed fatty acids at 70 to 100°C, or add the enzymatically decomposed fatty acids to the aqueous solution of caustic soda, and age for 05 to 3 hours after neutralization. After that, add inorganic salt to make a paste.

Examples of inorganic salts include sodium silicate, sodium sulfate, and sodium carbonate, and their addition increases the flexibility and water retention of the engraving material. The amount added is preferably 10 to 20% by weight. Also, acid hihititan can be added to the inorganic salt to make it white.

The engraving material of the present invention is obtained by mechanically kneading the paste composition, extruding it into a rod or plate shape, and cutting it into a predetermined length. As the kneading machine and extrusion molding machine, machines commonly used for soap production may be used.

The material for engraving thus obtained contains 1.5% glycerin, which is a by-product of saponifying refined oil or partially decomposed glyceride.
It contains up to 3% by weight, has hardness and flexibility suitable for engraving, and is not brittle, and a material for engraving can be obtained from the raw oil and fat.

Next, the present invention will be explained in more detail with reference to Examples.

Example 1 (a) A mixed oil (acid value: 3, saponification value: 20) consisting of beef tallow, lard, and coconut oil in a weight ratio of 10:3 as raw material fats and oils.
6) was deoxidized and decolorized by a conventional method to obtain a refined oil (acid value 0.
1) Obtain 100 Kg.

(b) Charge 100 kg of the refined oil into a reaction vessel, add 60 kg of water and 20 g of lipase (0.02% by weight relative to the refined oil), stir at 35°C for 12 hours, and adjust the acid value to 147.
, 96 kg of decomposed fatty acids with a saponification value of 213 were obtained. The decomposition rate of this decomposed fatty acid was 69.0% based on the acid value and saponification value.

(c) Add 30 kg of 50% caustic soda and 8 kg of water to 100 kg of the above decomposed fatty acid to neutralize it, and make 137 kg of soap dough.
Get Kg. 42 kg of No. 1 sodium silicate (purity 45%) is added to 100 kg of the soap dough, mixed, and then mechanically kneaded, extruded, and molded to obtain a material for engraving. The obtained material contained 31,596% water and 2.396% glycerin.

The obtained engraving material had appropriate flexibility and did not crumble or deform when engraved, and had a hardness suitable for engraving and had good workability.

As stated above, the present invention provides a high-quality engraving material that is easy to engrave, a process for refining fatty acids and glycerin, and the patent applicant Miyoshi Yushi Co., Ltd.

Claims (1)

[Claims] (1) In the process of producing enzymatically decomposed fatty acids by hydrolyzing refined oils and fats with lipolytic enzymes, the enzymatic decomposition of the fatty acids is stopped at approximately 70% and contains purified oils and fats or partially decomposed glycerides. After obtaining a fatty acid and then adding an inorganic salt to the soap obtained by neutralizing and saponifying the enzymatically decomposed fatty acid with caustic soda, it is mechanically kneaded and extruded to form a rod-shaped or plate-shaped material. A method for producing a material for engraving, characterized in that it contains 1.5 to 3% by weight of glycerin produced as a by-product in the saponification step.