公开(公告)号：US3525734A

公开(公告)日：1970-08-25

申请号：US3525734D

申请日：1969-04-03

Applicant: RHODIACETA

Inventor： RAJON ANDRE

IPC: C08B3/06 ,  C08B3/22 ,  C08B3/28

CPC classification number: C08B3/28 ,  C08B3/06 ,  C08B3/22

公开(公告)号：US3655326A

公开(公告)日：1972-04-11

申请号：US3655326D

申请日：1969-11-05

Applicant: RHODIACETA

Inventor： RAJON ANDRE

IPC: D01F11/02 ,  D06M13/188 ,  D06M13/20 ,  C08B3/06

CPC classification number: D06M13/188 ,  D01F2/28

Abstract: The heterogeneous acetylation of regenerated cellulose textile articles is carried out using acetic anhydride as the acetylating agents and an alkali metal acetate, especially potassium acetate, as catalyst at 100*-135* C., keeping the acetic anhydride content of the acetylation bath above 95 percent by weight, and also keeping the constituent filaments of the articles at constant length. The process is quick and thus suitable for continuous operation, and avoids mutual cohesion of the filaments as a result of softening or partial solution.

Abstract translation: 再生纤维素纺织制品的异相乙酰化作用是使用乙酸酐作为乙酰化剂和碱金属乙酸酯，特别是乙酸钾，作为催化剂，在100-113℃下，使乙酸酐的含量保持在95以上 重量百分比，并且还使制品的构成长丝保持恒定。 该方法快速，因此适合于连续操作，并且由于软化或部分溶液而避免长丝的相互内聚。