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    4.
    发明专利
    未知

    公开(公告)号：DE1918519A1

    公开(公告)日：1969-10-30

    申请号：DE1918519

    申请日：1969-04-11

    Applicant: SNIA VISCOSA

    Inventor： SICLARI FRANCESCO ,  MAGNONI FRANCO ,  FULMINI SERGIO

    IPC: C08G63/00 ,  B01J10/02 ,  B01J14/00 ,  B01J19/18 ,  C08G63/78 ,  C08G85/00 ,  B01J

    Abstract: Continuous process for the rapid realization of chemical processes, which require a change of thermal energy and the separation of volatile byproducts from the reaction, such as processes that include esterification and transesterification and/or polycondensation reactions, characterized in that the initial and intermediate materials, to react, are fed continuously, with a certain volume, to the reaction chamber, against the upper part of the inner surface of descending walls, of material that is a good conductor of heat, and externally in contact with a vehicle. Thermal, because the reacted product, in a liquid state, is continuously extracted from the bottom of said enclosure, in a volume with a large excess with respect to the aforementioned determined volume of supply, and because said excess of reacted product is in turn reintroduced and conducted against the aforementioned upper part of the mentioned walls, in order to form a liquid layer that slides in contact with said walls, absorbing heat by contact with said internal surface, and in whose liquid layer said materials and products are dispersed and put at the temperature and under the conditions of reaction and/or transformation of the same. State and separation of the aforementioned volatile by-products. (Machine-translation by Google Translate, not legally binding)

    5.
    发明专利
    未知

    公开(公告)号：DE1645300A1

    公开(公告)日：1970-09-17

    申请号：DE1645300

    申请日：1965-10-27

    Applicant: SNIA VISCOSA

    Inventor： SICLARI FRANCESCO ,  FULMINI SERGIO

    IPC: C08G69/46 ,  B01D1/16

    Abstract: 1,129,456. Purifying polyamides and polyesters. SNIA VISCOSA SOCIETA' NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. 27 Oct., 1965 [30 Oct., 1964], No. 45473/65. Heading C3R. In processes for stripping volatile fractions from, and increasing the molecular weight of, polyamides and polyesters wherein the molten polymer falls freely as liquid threads or droplets through an inert gaseous atmosphere in an enclosure the material collected at the bottom of the enclosure is recycled. The inert gaseous atmosphere may be stripped and also recycled. In Fig. 2 crude polymer from line 13 and recycled polymer pumped through line 18 1 by pump 19 1 falls as threads B and is collected in stirred autoclave C 1 for recycling or discharge. An inert gas (N 2 , CO 2 or superheated steam) is heated at F and introduced into enclosure A through foraminous ring 15, discharged through line 16 and recycled via condenser D in line 26. Fig. 1 (not shown) is similar except that autoclave C 1 is omitted, the polymer collecting in and being recycled or discharged from the bottom of enclosure A.

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