…To prevent deterioration of the paper, the paper is made in a neutral or slightly alkaline environment without using aluminium. A neutral size made by emulsion of alkyl ketene dimer or alkenyl succinic anhydride is used as the sizing agent, a cationic polymer is added as an auxiliary, and calcium carbonate, which is neutral or slightly alkaline and stable, is used as a filler. Rosin size is simply adsorbed onto the pulp, but in this case the neutral size reacts with the carbohydrates and chemically bonds to form a very stable compound, so the effect is long-lasting. … *Some of the terminology explanations that mention "alkenyl succinic anhydride" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…紙の劣化を防ぐためにはバン土を用いず,中性ないし弱アルカリ性として抄紙する。サイズ剤にはアルキルケテンダイマーまたはアルケニル無水コハク酸などをエマルジョンにした中性サイズを用い,助剤に陽イオン性ポリマーを加え,充てん材として中性もしくは弱アルカリ性で安定な炭酸カルシウムを用いる。ロジンサイズはパルプに吸着しているだけであるが,この場合は中性サイズが炭水化物と反応して化学結合するので非常に安定な化合物をつくるため効果が永続する。… ※「アルケニル無水コハク酸」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 |
<<: Allgemeine Zeitung - Allgemeine Zeitung
Theravada Buddhism was introduced from India to Ce...
This refers to a process that covers or hydrophob...
A prefecture in the San'in region facing the S...
An American oil company. One of the predecessors o...
Order Carnivora, Suborder Pinnipedia, Family Otari...
...Population: 189,000 (1993). The name of the ci...
...Although they are small and their larvae feed ...
A Noh piece. It can be used as a fourth or fifth ...
This is one of the esoteric Buddhist rituals to pr...
…[Kawaguchi Hiroaki]. … *Some of the terminology ...
...33m in height) is the highest. [Rockfill dam] ...
...Rice, tobacco, and hassaku oranges are cultiva...
A perennial plant of the Musaceae family. Native t...
A type of spore that is an asexual reproductive c...
…In the autumn of 331 BCE, Alexander the Great, w...