公开(公告)号：US3660534A

公开(公告)日：1972-05-02

申请号：US3660534D

申请日：1970-07-09

Applicant: DART IND INC

Inventor： CARROCK FREDERICK E ,  DOAK KENNETH W ,  ACKERMAN ALFRED J

IPC: C08F279/02 ,  C08F291/02 ,  C08F15/04

CPC classification number: C08F279/02 ,  C08F291/02 ,  Y10S525/942 ,  C08F212/04

Abstract: THE MELT FLOW OF RUBBER-MODIFIED POLYSTYRENE, ABS AND THE LIKE IS CONTROLLED BY CONTACTING POLYMERIZABLE VINYL MONOMERS WITH A CHELATING AGENT SUCH AS ETHYLENEDIAMINETETRACETIC ACID AND A MERCAPTAN CHAIN REGULATOR SUCH AS TERTIARY DODECYL MERCAPTAN IN THE PRESENCE OF WATER AND POLYMERIZING THE RESULTING MIXTURE.

公开(公告)号：US3575892A

公开(公告)日：1971-04-20

申请号：US3575892D

申请日：1968-02-09

Applicant: DART IND INC

Inventor： ERCHAK MICHAEL JR ,  MERCIER PHILIP L ,  DOAK KENNETH W

IPC: C08J9/18 ,  C08F47/10

CPC classification number: C08J9/18 ,  Y10S264/05

Abstract: THE PROCESS COMPRISES IMPREGNATING BEADS OF A POLYMER SUCH AS POLYSTYRENE IN A NON-AQUEOUS ENVIRONMENT WITH LIQUEFIED BUTANE AT CONDITIONS SUFFICIENT TO MAINTAIN THE BUTANE IN ITS LIQUEFIED STATE, REMOVING THE EXCESS BUTANE FROM THE IMPREGNATED BEADS AND RECOVERING THE FOAMABLE BEADS.

公开(公告)号：US3448175A

公开(公告)日：1969-06-03

申请号：US3448175D

申请日：1963-08-16

Applicant: DART IND INC

Inventor： DOAK KENNETH W ,  CARROCK FREDERICK E

IPC: C08F2/18 ,  C08F279/04 ,  C08F19/02 ,  C08F19/00

CPC classification number: C08F279/04

公开(公告)号：US3515692A

公开(公告)日：1970-06-02

申请号：US3515692D

申请日：1966-10-24

Applicant: DART IND INC

Inventor： CARROCK FREDERICK E ,  DOAK KENNETH W

IPC: C08F279/04 ,  C08F19/18 ,  C08D11/02 ,  C08F45/28

CPC classification number: C08F279/04

公开(公告)号：US3507808A

公开(公告)日：1970-04-21

申请号：US3507808D

申请日：1968-04-12

Applicant: DART IND INC

Inventor： DOUGLAS ROBERT M ,  ERCHAK MICHAEL JR ,  DOAK KENNETH W

IPC: B01J31/02 ,  C07C409/00 ,  C08F4/32 ,  C08F4/34 ,  C08F10/00 ,  C08D3/04

CPC classification number: C08F4/38 ,  B01J31/0208 ,  C07C407/006 ,  C07C409/38 ,  C07C409/16 ,  C07C409/34