公开(公告)号：US20140221588A1

公开(公告)日：2014-08-07

申请号：US14250214

申请日：2014-04-10

Applicant: RELIANCE INDUSTRIES LIMITED

Inventor： Krishna Renganath SARMA ,  Ajit Behari MATHUR ,  Rakshvir JASRA ,  Sudhakar PADMANABHAN ,  SHASHIKANT ,  Viralkumar PATEL

IPC: C08F4/76

CPC classification number: C08F4/76 ,  C08F4/64048 ,  C08F10/02 ,  C08F110/02 ,  C08F2500/01 ,  C08F2500/17

Abstract: The present invention relates to a non-cryogenic process for the large scale synthesis of disentangled ultra high molecular weight polyethylene (DUHMWPE) polymers. The process comprises of the following steps: a. mixing FI catalyst of formula I with a hydrocarbon solvent containing poly-methyl aluminoxane (P-MAO) co-catalyst in a vessel under stirring before polymerization or directly in the polymerization vessel at a temperature ranging between 25° C. and 29° C. under a dry Nitrogen atmosphere; and lower concentration of co-catalyst resulting in the associated benefits as described earlier in the claims and descriptions. b. pressurizing ethylene in the polymerization vessel and polymerizing ethylene in a solution or a suspension, continuously or batch wise, in one or more stages at a temperature is in the range of 30° C. to 50° C.

Abstract translation: 本发明涉及用于大规模合成解缠结超高分子量聚乙烯（DUHMWPE）聚合物的非低温方法。 该过程包括以下步骤：a。 在聚合之前搅拌下将式I的FI催化剂与含有聚甲基铝氧烷（P-MAO）助催化剂的烃溶剂混合在容器中，或直接在聚合容器中，温度范围为25℃至29℃。 在干燥氮气氛下; 并且较低浓度的助催化剂导致如权利要求和描述中所述的相关益处。 b。 在聚合容器中加压乙烯并在一个或多个阶段中在连续或间歇的溶液或悬浮液中聚合乙烯的温度在30℃至50℃的范围内。