公开(公告)号：US3879357A

公开(公告)日：1975-04-22

申请号：US43721074

申请日：1974-01-28

Applicant: BAYER AG

Inventor： WINGLER FRANK ,  MULLER RICHARD ,  WASSMUTH GERD ,  ERDMENGER RUDOLF ,  ULLRICH MARTIN

IPC: C08F2/00 ,  C08F2/02 ,  C08F212/00 ,  C08F212/06 ,  C08F220/00 ,  C08F220/04 ,  C08F220/10 ,  C08F220/12 ,  C09D5/46 ,  C08F1/04 ,  C08F15/02 ,  C08F15/40

CPC classification number: C08F220/12 ,  C08F212/06 ,  Y10S526/934

Abstract: Copolymer having an average molecular weight of 500 to 10,000, a glass transition temperature of 40* to 70*C and an acid number of 55 to 120 mg of KOH/g of copolymer, said copolymer being the product of free radical copolymerization of a monomer mixture of I. 0 to 55 mol % of styrene, Alpha -methylstyrene, methylmethacrylate or mixtures thereof; II. 10 to 25 mol % of acrylic acid, methacrylic acid or mixtures thereof; III. 0 to 70 mol % of at least one ester of methacrylic acid containing 2 to 18 carbon atoms in the alcohol component and IV. 20 to 50 mol % of at least one ester of acrylic acid containing 1 to 18 carbon atoms in the alcohol component, AND PROCESS OF PRODUCING SAID COPOLYMER BY CONTINUOUSLY POLYMERIZING SAID MONOMER MIXTURE IN A CONTINUOUSLY FED PROCESS UNDER STEADY STATE AND PERFECTLY AGITATED CONDITIONS TO A CONVERSION OF 35 TO 60 MOL % AND THEN POLYMERIZING RESULTING POLYMERIZATION REACTION MIXTURE TO A CONVERSION OF AT LEAST 94 MOL % UNDER NON-STEADY STATE CONDITIONS WHICH PREVENT BACK MIXING OF THE POLYMER PRODUCED IN SAID SECOND POLYMERIZATION STEP WITH POLYMERIZATION REACTION MIXTURE FROM SAID FIRST POLYMERIZATION REACTION STEP IN A TUBULAR PLUG FLOW REACTOR UNDER NON-STEADY STATE CONDITIONS.

Abstract translation: 共聚物的平均分子量为500〜10,000，玻璃化转变温度为40〜70℃，酸值为55〜120mg KOH / g共聚物，所述共聚物为单体的自由基共聚 1. 0〜55摩尔％苯乙烯，α-甲基苯乙烯，甲基丙烯酸甲酯或其混合物的混合物; 二， 10-25mol％的丙烯酸，甲基丙烯酸或其混合物; 三， 0至70mol％的至少一种在醇组分中含有2至18个碳原子的甲基丙烯酸酯和IV。 在醇组分中至少一种含有1至18个碳原子的丙烯酸酯的至少一种20至50摩尔％，以及在稳定状态下将连续共混过程中的均聚单体混合物连续聚合而生成共聚物的方法以及对A的完全激发的条件 转化率为35至60摩尔％，然后将聚合度聚合反应混合物转化为至少94摩尔％，在非稳定状态条件下，防止在第二次聚合步骤中产生的聚合物的反混合与聚合反应混合物从第一次聚合反应 在非稳态条件下的管状流体反应器中的反应步骤。