公开(公告)号：US3911054A

公开(公告)日：1975-10-07

申请号：US29305572

申请日：1972-09-28

Applicant: STAMICARBON

Inventor： ROEST BERNARD C ,  PIJPERS EMANUEL M J

IPC: C08F2/00 ,  C08F2/38 ,  C08F4/00 ,  C08F4/12 ,  C08F4/42 ,  C08F36/00 ,  C08F36/04 ,  C08F297/00 ,  C08F297/04 ,  C08L9/00 ,  C08L47/00

CPC classification number: C08F297/042 ,  C08F4/12 ,  C08F36/04 ,  C08F4/488

Abstract: Polyfunctional Lewis bases such as N,N,N'',N''-tetramethyl-1,2diaminoethane are used to lower the viscosity of a solution of a living polymer, especially during the preparation of a living polymer using a polyfunctional anionic initiator according to the process disclosed. Homopolymers and copolymers may be produced; the process is particularly suited for the preparation of A-B-A block copolymers the Lewis base being added after at least 50 percent of the first-formed polymer block is completed.

Abstract translation: 多官能路易斯碱如N，N，N'，N'-四甲基-1,2-二氨基乙烷用于降低活性聚合物溶液的粘度，特别是在使用多官能阴离子引发剂制备活性聚合物时 涉及到公开的过程。 可以生产均聚物和共聚物; 该方法特别适用于制备A-B-A嵌段共聚物，其中在初始形成的聚合物嵌段的至少50％完成后加入路易斯碱。

公开(公告)号：US3647754A

公开(公告)日：1972-03-07

申请号：US3647754D

申请日：1970-03-27

Applicant: STAMICARBON

Inventor： BONNEMA JENTJE ,  PIJPERS EMANUEL M J

IPC: C08G2/06 ,  C08G1/02 ,  C08G1/12

CPC classification number: C08G2/06

Abstract: A PROCESS FOR THE PREPARATION OF MACROMOLECULAR FORMALDEHYDE POLYMERS IS DESCRIBED WHEREIN FORMALDEHYDE CONTAINING SUBSTANTIAL AMOUNTS OF WATER, E.G., FROM 0.5% UP TO 7% OR EVEN MORE, MAY BE POLYMERIZED. THE CATALYSTS USED FOR THIS PROCESS ARE CERTAIN TITANIUM COMPOUNDS DISSOLVED IN AN INERT LIQUID MEDIUM, SUCH AS TITANIC ESTERS OF ALCOHOLS, CYCLO ALCOHOLS, PHENOLS AND THIOPHENOLS; TITANIUM SALTS OF ORGANIC SALTS AND OTHER ORGANIC TITANIUM COMPOUNDS.