...There are three types of rosin, depending on how it is extracted: (1) what is left over after steaming the resin to remove the turpentine (gum rosin), (2) what is obtained by crushing the roots, extracting them with a solvent, and then steaming the extract to remove the turpentine (wood rosin), and (3) what is obtained as a by-product when pine is used to make pulp, the raw material for paper, using the kraft process (tall rosin). The chemical composition of the products obtained in this way varies considerably, but in the one called rosin, resin acids make up the majority. *Some of the terminology that refers to "wood rosin" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…とり方により次の三つがある。(1)やにに水蒸気をかけてテレビン油を除き,あとに残ったもの(ガムロジン),(2)根を細かく砕き,溶剤で抽出し,抽出物から水蒸気でテレビン油を除いたもの(ウッドロジン),(3)マツを使って紙の原料であるパルプをクラフト法でつくるとき,副産物としてうるもの(トールロジン)。こうして得たものは化学組成がかなり違うが,ロジンと呼ばれるものでは,樹脂酸がその大部分を占める。… ※「ウッドロジン」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
…However, in 55 (Koji 1), Mori Motonari rose to p...
...It grows in warm areas from Honshu to Kyushu, ...
When individuals or companies try to make decision...
1873-1937 A Joruri shamisen player from the Meiji...
Proliferation Security Initiative : A proliferatio...
...The relationship between large and small famil...
In the Edo period, this referred to cases in which...
This refers to insects that form groups, create h...
… [Shomei Kojima]. … *Some of the terminology tha...
This mountain is located in the southwest of the ...
Although it is often mistaken for a white alloy du...
…In England, G. Marshall founded the Juvenile Mag...
A derogatory term given by the Han people living ...
… ECL (emitter coupled logic circuit) is a typica...
...From this time onwards, the "trend toward...