KR930009277B1 - Process for preparation of dehydration and reinforcement agents of paper manufacture - Google Patents

Abstract

adding 10-100 parts of one selected among water-soluble starch, monosaccharide or polysaccharide to 200-250 parts of formaline; controlling pH to 3-10 with one of glacial acetic acid or formic acid, heating to 50-100 deg.C, reacting until the content becomes a fully transparent solution; controlling the pH of it to 7-10.5 with alkaline solution, adding 30-100 parts of urea or melamine, and reacting at 50-100 deg.C for 20-90 min. to obtain a reacted product; adding 30-100 parts of methanol or ethanol and 5-20 parts of one selected among diethylene triamine, triethylene tetramine or polyamine, controlling pH to 3-6 and reacting for 5-60 min.; neutralizing with alkaline, removing the unreacted formaline and cooling.

Description

Manufacturing method of paper dehydration and intelligence enhancer

The present invention relates to a method of manufacturing paper-making dehydration and intelligence enhancers that can increase the dehydration effect during papermaking and can significantly increase paper strength. By dissolving and copolymerizing urea, melamine, and polyamines therein, a transparent water-soluble transparent water-soluble material relates to a manufacturing method of dehydration and strength enhancer for manufacturing.

Conventionally, as a method of enhancing the strength by surface sizing or internal sizing, a method of treating glue with a size of glue after coagulating paper, a method of applying and solidifying viscose, and a method of adding urea or melamine or formaldehyde resin to the paper To obtain wet strength paper by adding polyethyleneimine to the paper, adding dialdehyde starch to the paper, and adding phenolic resin to obtain wet strength paper, and water-soluble cellulose and silicic acid. The addition of fibrous binders such as soda, polyacrylate, synthetic rubber, and microacetalized PVA fibers has enhanced the intellect, but there is no method to enhance the intellect while having an excellent dehydration effect.

The present invention relates to a method of manufacturing a dehydration and intelligence enhancer for paper, which is a polymer material that can greatly increase the dehydration effect, which is a major problem in papermaking as well as paper strength. 200 parts-250 parts of hormarin (Formaline) is added to the prepared chemical-resistant container, and 10-100 parts of water-soluble starch, polysaccharides or monosaccharides are added thereto. The reaction was stirred with a solution until it became a solution, and then adjusted to PH7-105 with an alkali aqueous solution such as sodium hydroxide, potassium hydroxide or ammonium hydroxide, and 30-100 parts of urea or melamine was added thereto, followed by 20 minutes at 50 ° C to 100 ° C. 30-100 parts of methanol or ethanol and diethylene triamine or triethene tetramine or other polyamine 5-20 When it is added and adjusted to PH3-6 for 5 to 60 minutes to reach a certain degree of polymerization, it is neutralized with alkaline solution, removes unreacted homarinin, and cools it to obtain a dehydration and paper strength enhancer for polymers. .

The polymer material prepared by the above method may be diluted with water as it is a cationic adult.

In addition, the polymer material may be made into a 50% aqueous solution, and then adjusted to PH2-3 with hydrochloric acid, and then aged for 1 to 3 hours.

According to this method, the polymer material produced can be expected to be a significant dehydration effect and the strengthening of the intelligence by using 1% to 5% by weight relative to the paper, which is a fiber when manufacturing paper. In other words, in the series of devices related to dehydration during paper making, that is, the dehydration, ie, white water is easily removed from the shunt section, the book part, the kuuchi part, the fures part, and the drying speed is also increased in the drying part. In addition to the abundance, according to this can be expected to have a great effect on paper production, and also has the characteristics that can be obtained at the same time.

The above effects are presumed to be due to the fact that the polymer material obtained in the present invention is porous and suppresses the hydration of pulp having a large amount of baby, thereby increasing the dehydration effect and generating water-resistant bonds or crosslinks between adjacent fibers. In order to clarify the effect of the produced papermaking dehydration and intelligence enhancer will be given an example.

Example 1

The polymer material was diluted with a 50% aqueous solution of dehydrating agent and adjusted to PH2-3 as hydrochloric acid. After 2 hours, additional water was made into 5% solution, and 3% was added to the paper machine by weight. It was.

Example 2

5% of the above polymer material was added and 3% was added to the paper machine by weight relative to the paper, and the result was measured.

Claims (1)

10 parts-100 parts of water-soluble starch, polysaccharides, or monosaccharides are added to 200 parts-250 parts of homarinin, adjusted to PH-310 with either glacial acetic acid or uisan, and heated to 50 ℃ -100 ℃ until the contents become completely transparent solution. After the reaction, the mixture was adjusted to PH7-10.5 with alkaline solution, and 30-100 parts of urea or meramine was added thereto, and then 30-100 parts of methanol or ethanol and diethylene triamine were reacted at 50 ° C. to 100 ° C. for 20-90 minutes. Add 5 parts-20 parts of either triethene detramine or polyamine, adjust to PH3-6 and react for 5 minutes to 60 minutes to reach a certain degree of polymerization, neutralize with alkaline solution, remove unreacted homarinin and cool down. Method for producing a dewatering and intelligence enhancer for paper, characterized in that the load.