公开(公告)号：FR1369212A

公开(公告)日：1964-08-07

申请号：FR947450

申请日：1963-09-13

Applicant: BASF AG

Inventor： BRONSTERT KLAUS ,  WILD HANS ,  ECHTE ADOLF ,  BOECK EDMUND ,  KRAUSE HANS-JOACHMIN

IPC: B29C51/00 ,  C08F279/02 ,  C08F287/00 ,  C08L21/00 ,  C08L51/00 ,  C08L51/04 ,  C08L55/02

公开(公告)号：GB927989A

公开(公告)日：1963-06-06

申请号：GB646562

申请日：1962-02-20

Applicant: BASF AG

Inventor： MOSTHAF HELMUT ,  BRONSTERT KLAUS ,  BOECK EDMUND ,  UFER KLAUS

IPC: B29B7/00 ,  B29B7/42 ,  B29C47/10 ,  B29C48/395 ,  B29C48/67 ,  B29C48/76 ,  C08J3/22 ,  C09B67/20

Abstract: 927,989. Extruding plastic materials. BADISCHE ANILIN- & SODAFABRIK A.G. Feb. 20, 1962 [Feb. 23, 1961], No. 6465/62. Class 87(2). In a process for the continuous homogeneous incorporation of substances, such as colouring matter or stabilizers, which are to be finely dispersed in melts of plastics by premixing a small portion of the powdered or granular plastic with the substance to be finely dispersed therein, the mixture is supplied in the cold state to an extruder 1, the mixture being melted in a melting zone and the melt mixed in a mixing zone adjacent to the melting zone in the extruder 1, mixing the resultant melt in a second mixing zone with the bulk of the plastic introduced in a molten condition and discharging the complete mixture thus obtained from the extruder. The extruder 1 houses a worm screw having a rear part 6 in the melting zone and a front part 7 in the second mixing zone. The melting zone is fed from a rear feed hopper 2, and the second mixing zone by a front feed hopper 3. Immediately prior to the front feed hopper 3 is a flow retarding element 8 which has the same external diameter as the screw thread and forms a narrow gap of 0À01 to 0À2 m.m. between its outer surface and the inner surface of the extruder housing.

公开(公告)号：GB900151A

公开(公告)日：1962-07-04

申请号：GB2436760

申请日：1960-07-13

Applicant: BASF AG

Inventor： DACHS KARL ,  BRUEGGEMANN HORST ,  BOECK EDMUND

IPC: C08G69/20

Abstract: A process for the polymerization of lactams having from 4 to 12 ring carbon atoms in the presence of an alkaline reaction initiator and a polymerization activator comprises using as the polymerization activator a substituted urethane which is capable of being dissolved undecomposed in the lactam at the polymerization temperature, having the general formula where R1, R2 and R3 represent a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 20 carbon atoms, which may be substituted by fluorine or ether groups, or in which R1 and R2 together represent a divalent acryl radical of the general formula -CH2-(CH2)n-CO where n is an integer from 3 to 11, X is oxygen, sulphur or > N-R4 wherein R4 is hydrogen or a monovalent hydrocarbon radical as defined above, or in which R1 has the meanings defined above and R2 and/or R3 represent the radicals where Y is a divalent and X a trivalent hydrocarbon radical with from 1 to 20 carbon atoms, which may be substituted by fluorine or ether groups, and X, R1, R2 and R3 are as defined above. Specified lactams are pyrrolidone, piperidone, caprolactam, oenanthic lactam, caprylic lactam and lauric lactam. Many activators are specified. In the examples:- (1) caprylic lactam is polymerized in the presence of 1,6-hexamethylene-N,N1-bis-ethylurethane and a caprylic lactam-potassium hydroxide reaction product; (2) caprolactam is polymerized in the presence of potassium and 1-methyl-phenylene-2,4-bis-N,N1-benzylurethane and (3) caprylic lactam is polymerized in the presence of potassium and p,p1-phenylene-bis-N,N1-phenylurethane.

公开(公告)号：BE599245A

公开(公告)日：1961-05-16

申请号：BE599245

申请日：1961-01-18

Applicant: BASF AG

Inventor： BRUEGGEMANN HORST ,  DACHS KARL ,  WILHELM HANS ,  BOECK EDMUND

IPC: C08G