A Process for Producing Particulate Water-soluble Cellulose Derivatives

• Main Authors: MORNING MARTIN, LELGEMANN RUDOLF, WEBER GUNTER, KIESEWETTER RENE, SCHLESIGER HARTWIG
• Format: Patent
• Language: English; Korean
• Published: 07.09.2001
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DERIVATIVES THEREOF; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; POLYSACCHARIDES; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PURPOSE: Provided is a process for the production of particulate water-soluble cellulose derivatives, preferably those with a thermal flocculation point. CONSTITUTION: The process for producing particulate water-soluble cellulose derivatives, comprises: a) forming a feed composition comprising 20 wt. % to 50 wt. % of a cellulose derivative, based on the total weight of the feed composition, and 50 wt. % to 80 wt. % of water, based on the total weight of the feed composition, wherein the cellulose derivative is at least one of swelled and dissolved in the feed composition; b) contacting, in a high rotational speed impact mill, the feed composition with a heat exchange gas and carrier gas, thereby converting the cellulose derivative of the feed composition into a solid state form of finely particulate particles; c) separating the particulate cellulose derivative from the heat exchange gas and carrier gas; and d) optionally drying the particulate cellulose derivative. 본 발명은 미립상 수용성 셀룰로즈 유도체를 제조하는 신규하며, 특히 경제적인 방법에 관한 것이다. 본 발명의 방법은 팽윤되고(되거나) 용해된 상태의 셀룰로즈 유도체 및 물의 공급 조성물을 형성하는 것을 포함한다. 공급 조성물을 체가 없는 고회전속도 충격 분쇄기에서 담체 가스 및 열교환 가스와 접촉시키고, 공급 조성물 중의 셀룰로즈 유도체를 미세한 미립상 입자의 고상 형태로 전환시킨다. 이어서, 미립상 셀룰로즈 유도체를 열교환 가스 및 담체 가스로부터 분리시키고, 임의로 건조시킨다. 분쇄 건조 및 미립상 셀룰로즈 유도체 생성물은 팽윤되고(되거나) 용해된 상태의 셀룰로즈 유도체 중 특정한 물의 함량을 달성함으로써 영향받게 된다.