公开(公告)号：DE1131884B

公开(公告)日：1962-06-20

申请号：DEB0059855

申请日：1960-10-25

Applicant: BASF AG

Inventor： EILBRACHT DR HANS ,  PFANNMUELLER DR HELMUT ,  ROTZOLL DR RUDI-HEINZ ,  TRIESCHMANN DR HANS-GEORG ,  URBAN DR FRIEDRICH ,  ZACHER DR WIELAND

IPC: C08F10/00

公开(公告)号：DE1116404B

公开(公告)日：1961-11-02

申请号：DEB0052032

申请日：1959-02-07

Applicant: BASF AG

Inventor： GOEBEL DR SIEBERT ,  HAEBERLE DR MANFRED ,  ZACHER DR WIELAND ,  SCHMIDT-THOMEE DR GEORG

IPC: C08F10/00

Abstract: In a process for the purification of polyethylene, obtained by polymerization at pressures above 500 excess atmospheres, by freeing it from gaseous and volatile non-gaseous constituents including unreacted monomer, in which the polyethylene, after reaction using a catalyst in a reaction vessel, is led therefrom first into a separator which is at a lower pressure than the reaction pressure, preferably less than 5 excess atmospheres and thence in finely divided form with a large surface area into a degasification chamber in which the polyethylene is subjected to vacuum treatment and thence to an extruder, provision being made to exclude air over the whole path of the polyethylene from the reaction vessel to the extruder, steam is introduced into the separator at a temperature of about 150 DEG C. and is discharged from the separator together with a part of the gaseous and volatile constituents. Further steam, water or an organic solvent may be added to the polyethylene after it leaves the separator and before it enters the degasification chamber. Polymers miscible with polyethylene may be added thereto in the separator and further processed therewith. Apparatus suitable for carrying out the process of the invention is described and illustrated.

公开(公告)号：DE1179711B

公开(公告)日：1964-10-15

申请号：DEB0067267

申请日：1962-05-16

Applicant: BASF AG

Inventor： ROTZOLL DR RUDI-HEINZ ,  IMMEL DR WOLFGANG ,  KINKEL DR KLAUS ,  URBAN DR FRIEDRICH ,  ZACHER DR WIELAND

IPC: C08F10/00

公开(公告)号：DE1135602B

公开(公告)日：1962-08-30

申请号：DEB0057006

申请日：1960-03-10

Applicant: BASF AG

Inventor： ZACHER DR WIELAND ,  EILBRACHT DR HANS ,  FRIEDENREICH DIPL-ING HEINRICH ,  GOEBEL DR SIEBERT

Abstract: A colourless lubricant for gas compressors comprises a turbid suspension of 0.01% to 5% by weight of a hard wax (as defined in the Specification) containing polar groups, e.g. ester, amide or free acid groups, in a colourless lubricating oil, preferably paraffinum liquidum. The wax is montan wax, montan wax acid, montan wax esterified with an alcohol, e.g. ethylene glycol or butylene glycol, or a mixture of a montan wax acid and an ester of a higher alcohol. Calcium salts of montan wax acid may be added to the hard wax in amounts of 10, 20 or 30% by weight.