|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||536/35 ; 149/63 ; 422/198 ; 423/235|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 2 인용 특허 : 0|
A continuous process is provided for the vapor phase nitration of cellulose in a novel reactor having a gas tight housing containing a table with a perforated surface. Cellulose in porous sheet form is continuously passed into the reactor over the perforated table while continuously introducing nitric acid vapor into the housing through the perforations to provide a cushion of nitric acid gas supporting the sheet and forcing nitric acid vapor through the porous sheet. Water vapor formed in the reaction and unreacted nitric acid vapor are continuously rem...
A continuous vapor phase process for the nitration of cellulose to produce nitrocellulose by reaction with nitric acid which comprises introducing cellulose in porous sheet form into a reactor having a substantially gas-tight housing containing a table having a perforated surface, passing the cellulose sheet over at least a portion of the perforated surface of said table, introducing a stream of nitric acid vapor into said housing and through said perforations to provide a cushion of gas supporting said sheet moving over said table and force nitric acid ...