公开(公告)号：US3925512A

公开(公告)日：1975-12-09

申请号：US24223472

申请日：1972-04-07

Applicant: STAMICARBON

Inventor： ROEST BERNARD C ,  SCHEPERS HERMAN A J

IPC: C08F297/04 ,  C08L9/06 ,  C08L25/10 ,  C08L25/16

CPC classification number: C08F297/046

Abstract: A process for preparing block copolymers is disclosed, wherein a living polymer of a diene is formed which carries at least one negatively charged diene unit in the end position, from 1 to 100 monomer units of styrene or a ring-substituted styrene derivative is polymerized on each living polymer anion site, and then a polymer block of Alpha -methylstyrene units is formed by polymerization of Alpha -methylstyrene. The cross-over reaction from the polymer block having the dienyl anion in the end position to the Alpha -methylstyrene is facilitated by the presence of the styrene or styrene derivative. The block copolymers can be employed for numerous applications wherein synthetic rubber is used, such as in bicycle tires, footwear, flooring, adhesives, coatings and elastomeric fibers.

Abstract translation: 公开了制备嵌段共聚物的方法，其中形成二烯的活性聚合物，其在末端位置带有至少一个带负电荷的二烯单元，苯乙烯的1至100个单体单元或环取代的苯乙烯衍生物在 每个活性聚合物阴离子部位，然后通过α-甲基苯乙烯的聚合形成α-甲基苯乙烯单元的聚合物嵌段。 苯乙烯或苯乙烯衍生物的存在促进了从末端位置具有二烯阴离子的聚合物嵌段到α-甲基苯乙烯的交叉反应。

公开(公告)号：US3890408A

公开(公告)日：1975-06-17

申请号：US26817372

申请日：1972-06-30

Applicant: STAMICARBON

Inventor： SCHEPERS HERMAN A J ,  ROEST BERNARD C

IPC: C08F297/02 ,  C08F19/08 ,  C08F15/18

CPC classification number: C08F297/026

Abstract: Block copolymers of the general configuration A-B-C- and B-C are prepared according to the process disclosed by preparing by means of a lithium based anionic initiator a polymer form a conjugated diene having at least one terminal dienyl anion. Said polymer may optionally have a non-elastomeric polymer block A attached thereto. The said polymer is reacted with a compound CH2 R1R2 such as diphenyl ethylene and subsequently with a 1-alkylethylene-carboxylic acid ester. Illustrative are poly(methyl methacrylate)-polydiene-poly(methyl methacrylate) block copolymers. Blockcopolymers so obtained are soluble in several organic solvents. Novel block copolymers are also disclosed.

Abstract translation: 根据通过锂基阴离子引发剂制备的方法制备通式A-B-C和B-C的嵌段共聚物，聚合物形成具有至少一个末端二烯基阴离子的共轭二烯。 所述聚合物可任选地具有附着于其上的非弹性聚合物嵌段A. 所述聚合物与化合物CH 2 = R 1 R 2如二苯乙烯反应，随后与1-烷基 - 乙烯 - 羧酸酯反应。 示例性的是聚（甲基丙烯酸甲酯） - 聚二烯 - 聚（甲基丙烯酸甲酯）嵌段共聚物。