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公开(公告)号：US20240010790A1
公开(公告)日：2024-01-11
申请号：US18251559
申请日：2021-11-03
发明人： Juan Pedro PÉREZ VALENCIA , Luis VEGA BERMEJO , José Antonio CARAZO ANGULO , Estanislao SAN NICOLÁS SAYANS , Michel VAN DEN BERG , Petrus Wilhelmus Gerardus VAN DER KRUIJS , Hendrik Cornelis VAN DASSELAAR , Bart FISCHER
IPC分类号： C08G65/332 , C08F220/44
CPC分类号： C08G65/332 , C08F220/44
摘要： The present invention refers to macroinitiators of general formula (HO)x—Ra—(O—C(═O)—Rb—C(═O)—O—O—Rc)y, a process for obtaining them, as well as their use in the synthesis of polymer polyols. It also relates to the resulting polymer polyol, as well as to a dispersant obtainable in the process for preparing the polymer polyol, said dispersant being obtained by reacting said macroinitiator with at least one ethylenically unsaturated monomer.
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公开(公告)号：US20220127410A1
公开(公告)日：2022-04-28
申请号：US17297389
申请日：2021-02-24
申请人： REPSOL, S.A.
摘要： The present invention refers to a method for the preparation of a polymer polyol which comprises: (i) preparing an intermediate in a first reactor by polymerizing a mixture comprising: (a) a base polyol in an amount from 60 to 100 wt % of the total amount of base polyol, (b) at least one ethylenically unsaturated monomer, (c) an acylperoxide radical initiator in an amount from 50 to 90 wt % of the total amount of acylperoxide radical initiator, and (d) a preformed stabilizer in an amount from 70 to 100 wt % of the total amount of preformed stabilizer or a macromer in an amount of from 70 to 100 wt % of the total amount of macromer; (ii) polymerizing in a second reactor a mixture comprising the intermediate prepared in step (i), the balance acylperoxide radical initiator proportion, the balance preformed stabilizer or macromer proportion and the balance base polyol proportion; wherein the at least one ethylenically unsaturated monomer is added only to the first reactor.
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