Japanese papers

Triglycerides are important constituents of resin. In softwood, the triglycerides account for 20—40% of total resin content, and in hardwood, 40—50%. The paper industry uses the term pitch for resins that create problems in paper machines. Traditionally, pitch is controlled or reduced by aging the wood, by use of chemicals to avoid deposits on the roUs, or by intensive washing of the pulp. AH these methods add to the cost of paper production. An alternative is to add a Upase to the pulp in a reaction lasting about one hour with the help of agitation. Results from Japanese paper mills show substantial... 

Hughes, S. (1978), Washi, the World of Japanese Paper, Kosansha, Tokyo. 

English transl. by D. S. Rosenberg, 10.2.69 of German transl. by S. Vedrilla (Chemiebau) of Low Temperature Pyrophoric Compounds in Process for Preparing Phtbalic Anhydride , a Japanese paper in Anzen Kogyo Kogaku, 1968... 

The most ingenious application of balloons guided only by prevailing winds was made by the Japanese against US territory in 1944. It is briefly described in Vol 2, p B11-L and more fully by R.W. McKay in Engineering Journal 28, 263—67 (1945), under the title Japanese Paper Balloons... 

The authors are indebted to K. Takakura for translating the Japanese papers mentioned, to G. Malhammar for helpful discussions and suggestions, and to C. R. Gore for reading the text. 

Refs l)R.W.McKay, Japanese Paper Balloons , Engineering Journal 28,563-7(1945) 2)Merriam-Webster s(1951), 209 3)EncyclBritannica(1952)... 

Bombs, Japanese Paper Balloon. See under Balloons and Airships and their Application in War... 

A Japanese paper of 1989 reported six similar cases, but no others appear to be on record. 

The most successful application of the vacuum suction table to the treatment of tapa cloth clearly was the formation of cast fills for filling voids. As with the hand-cast fills, pulp was created from hand-made Japanese papers. The benefit of using the suction table, however, was that no adhesive was necessary to attach the pulp to the edges of the voids. 

Breaks and tears were aligned and mended both from the front and back with wet-torn Japanese paper (Tengujo) using methylcellulose adhesive. The face mends were removed after repairs and fills were complete. 

There are two ways to hold the composition of Senko-Hanabi one is a dry process twisting a piece of Japanese paper tape 23 mm wide and 200 mm long containing about 0.09 of the composition at one end the other is a wet process where sticks made of rush or straw are dipped into a liquid mixture to a desired depth, withdrawn and dried in the sun. The liquid mixture is made by adding glutinous rice starch and water to the composition. 

The process has continued until today without much modification (T.Nishi Comments on the manufacture of Japanese paper, p2(l928), F.Jugaku ... 

This is a thin paper which has a slight lustre and makes a sound when handled like metal foil. This paper has the highest transparency compared with other Japanese paper, and a high tensile strength. The fibres are very fine and strong. This paper has a reasonable wet strength. It looks slightly yellowish. 

Then one end of the star is pasted with an ignition composition as follows Add a 10 celluloid or nitrocellulose solution in acetone(NC paste) to red thermit to form a slurry. Cover one end of the star with the slurry. Dry it well. In addition cover the red thermit with a black powder paste for safety in handling. Paste the star with Japanese paper and then paste a piece of eraarginated kraft paper on the side as shown in Fig.llS and dry it. 

The propellant charge are prepared by packing them one by one in a piece of Japanese paper. The charges must be distinguished for each size of mortar by wi iting a large number on them(this is not necessary for fast firing which is described later) ... 

Traditional Chinese and Japanese papers are made from cellulose fibres derived from locally-occurring plants. The fibres are separated by processes similar to those used on linen. Long fibres with relatively undamaged cellulose produce strong papers with good permanence. The first papers ever made are believed to have been made in China in 105 AD. 

While a review of the hterature indicates some unexpected similarities and some unexpected differences between corresponding enantiomorphs of morphine and sinomenine, it should be remembered that most of the work has been done in Japan and certain important details are lacking in English abstracts of Japanese papers. It would be very worthwhile to... 

The subject of the chemical synthesis of formose sugars, including the historical background, the results of kinetic studies and a rdsumd of biological tests, have been summarized by Mizuno and Weiss.Some chemical aspects of the formose reaction have also been surveyed in Japanese papers." The review " covers the literature up to 1971, which roughly coincides with the period covered in the previous report in this series. In the subsequent years, efforts have been continued to evaluate the influence of various factors affecting the yield and composition of the formose sugars. 

A British patent describes preparations of block copolymers in two steps. In the first, two different salts of hexamethylenediamine are formed one with carboxylic acid terminated polyoxyethylene and the other with adipic acid (nylon-6,6 salt). In the second step the two salts are reacted in the melt. Caprolactam can be used in place of the second salt." Also, a Japanese paper describes formations of block copolymers by reacting polyoxyethylene in melt condensation reactions with caprolactam in the presence of dicarboxylic acids." ... 

Manuf/Disthb. SKW Chems. http //www.skwchem. com Guanidine sulfamate Empincai CH8N4O3S Properties M.w. 156.16 Uses Fire retardant for Japanese paper screens... 

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