公开(公告)号：US4137388A

公开(公告)日：1979-01-30

申请号：US867394

申请日：1978-01-06

申请人： Louis A. Cutter

发明人： Louis A. Cutter

IPC分类号： C08F12/08 ,  C08F2/18 ,  C08F4/38 ,  C08F112/08

CPC分类号： C08F12/08 ,  Y10S526/909 ,  Y10S526/91

摘要： Crystal polystyrene with improved flow properties useful in injection molding is prepared in a two-stage process in which a first portion of monomer is polymerized in the presence of about 0.3 to about 2.0% peroxide initiator to convert about 70 to 95% of the monomer present to polymer having a number average molecular weight of 20,000 to 50,000 and a weight average of 50,000 to 100,000; then adding the rest of the monomer thereby reducing the catalyst concentration to generate a second moiety of polymer so that the final product has a weight average molecular weight of 150,000-300,000, and a number average of 50,000-70,000.

摘要翻译： 在注射成型中可用的具有改善的流动性质的结晶聚苯乙烯在两步法中制备，其中第一部分单体在约0.3至约2.0％过氧化物引发剂的存在下聚合以转化约70至95％的单体存在 数均分子量为20,000〜50,000，重均分子量为50,000〜100,000的聚合物; 然后加入剩余的单体，从而降低催化剂浓度以产生聚合物的第二部分，使得最终产物的重均分子量为15万-300,000，数均分子量为50,000-70,000。

公开(公告)号：US4008175A

公开(公告)日：1977-02-15

申请号：US594411

申请日：1975-07-09

申请人： James A. Barter

发明人： James A. Barter

IPC分类号： C08F2/00 ,  C08F4/32 ,  C08F283/01 ,  C08F299/04 ,  C08F4/34 ,  C08F4/38

CPC分类号： C08F299/0442 ,  C08F283/01 ,  C08F4/32

摘要： Ethylenically unsaturated material susceptible to free-radical polymerization, e.g., vinyl chloride and unsaturated polyesters, is polymerized, e.g., in an aqueous medium with an alkaline buffering reagent and an initiator system comprising an acid anhydride, e.g., isobutyric anhydride, and a peroxygen compound selected from an organic peroxy acid (peracid), e.g., peracetic acid, and hydrogen peroxide. Optionally, a further organic free-radical type initiator, e.g., lauroyl peroxide, a dialkyl peroxydicarbonate or azobisisobutyronitrile, is used in combination with the acid anhydride and peroxygen compound.Preferably, the anhydride and peroxygen compound are introduced separately into the polymerization medium. It is believed that at least a portion of the anhydride combines with the peroxygen compound to form the corresponding diacyl peroxide.

摘要翻译： 易于自由基聚合的烯键式不饱和物质，例如氯乙烯和不饱和聚酯，例如在具有碱性缓冲剂的水性介质和包含酸酐（例如异丁酸酐和过氧化合物）的引发剂体系中聚合 选自有机过氧酸（过酸），例如过乙酸和过氧化氢。 任选地，将另外的有机自由基型引发剂，例如过氧化月桂酰，过氧化二碳酸二烷基酯或偶氮二异丁腈与酸酐和过氧化合物组合使用。

公开(公告)号：US3846396A

公开(公告)日：1974-11-05

申请号：US34210673

申请日：1973-03-16

申请人： PENNWALT CORP

发明人： D ANGELO A ,  MAGELI O ,  SHEPPARD C

IPC分类号： C07C409/16 ,  C07C409/22 ,  C07C409/38 ,  C07C409/40 ,  C08F4/32 ,  C08F4/38 ,  C08F283/01 ,  C08G18/86 ,  C08K5/00 ,  C08K5/14 ,  C08F1/60 ,  C08F27/00

CPC分类号： C08K5/14 ,  C08F4/32 ,  C08F4/38 ,  C08F283/01 ,  C08G18/86 ,  C08K5/0025 ,  C08F4/00

摘要： A new class of compounds: R-W-R'' where R and R'' are identical oxy radicals containing peroxide functions such as dialkyl or diaralkyl peroxide, peroxyketal, peroxyester, or monoperoxycarbonate, and W is a carbonyl group, or carbonyl containing group, or an alkylidene or aralkylidene group, or a phosphorus containing group. Examples: Di(1,3-dimethyl-3-(t-butylperoxy)butyl) carbonate; Di(1,3-dimethyl-3-(n-butoxycarbonylperoxy)butyl) carbonate; 2,2-Bis(3,3-di(t-butylperoxy)butoxy) propane; Di(1,3-dimethyl-3-(t-butylperoxy)butyl) ethyl phosphate. They are free radical affording compounds useful in crosslinking of polyolefins and unsaturated polymers, and for the polymerization of vinyl monomers and diolefinic monomers.

摘要翻译： 一类新的化合物：RWR'，其中R和R'是含有过氧化物官能团的相同氧基，例如二烷基或二烷基过氧化物，过氧缩酮，过氧酯或单过氧碳酸酯，W是羰基或含羰基，或亚烷基或 芳烷基或含磷基团。

公开(公告)号：US3451985A

公开(公告)日：1969-06-24

申请号：US3451985D

申请日：1964-03-26

申请人： MONSANTO CO

发明人： MAHLO EDWIN K

IPC分类号： C08F2/00 ,  C08F2/18 ,  C08F2/22 ,  C08F4/00 ,  C08F4/28 ,  C08F4/32 ,  C08F4/34 ,  C08F4/38 ,  C08F1/60

CPC分类号： C08F4/38 ,  C08F4/32

公开(公告)号：US3214496A

公开(公告)日：1965-10-26

申请号：US25627163

申请日：1963-02-05

申请人： MONSANTO CO

发明人： HARRIS ALVA F

IPC分类号： C08F2/02 ,  C08F4/38

CPC分类号： C08F4/38

公开(公告)号：US2534120A

公开(公告)日：1950-12-12

申请号：US1481948

申请日：1948-03-13

申请人： MONSANTO CHEMICALS

发明人： GLICK SANFORD E

IPC分类号： C08F4/38 ,  C08F12/08

CPC分类号： C08F4/38 ,  C08F12/08 ,  Y10S260/28

公开(公告)号：US20240158554A1

公开(公告)日：2024-05-16

申请号：US18549185

申请日：2022-03-08

申请人： PPG Industries Ohio, Inc.

发明人： Marco Antonio Herrera Garcia ,  Jeremy J. Hay ,  Kevin H. Klingensmith ,  Robert D. Herold

IPC分类号： C08F222/10 ,  C08F4/38 ,  G02B1/04

CPC分类号： C08F222/1061 ,  C08F4/38 ,  G02B1/041

摘要： Provided is a polymerizable composition including (a) a polymerizable component comprising a diol bis(allyl carbonate) and/or a pre-polymer thereof; and (b) a polymerization initiator component including: (i) a di(C6-C10 alkyl) peroxydicarbonate, and (ii) an organic peroxide having one peroxy, one peroxycarbonate, or one peroxybenzoate group and a 1,1-dimethylalkyl group bonded to a peroxy oxygen, where (ii) comprises a molecular weight ranging from 200 to 250 g/mole, the polymerization initiator (b) is free of diisopropyl peroxydicarbonate, (i) comprises an amount ranging from 4.87% to 7.90% by weight relative to the total solids of the polymerizable composition and (ii) comprises an amount within the range defined by the following formula: (4.406X2−0.592X+0.021)≤Y≤(0.726X2−0.121X+0.009) where X corresponds to the weight fraction of (i) and Y corresponds to the weight fraction of (ii). Also provided is a method of making an optical article from the polymerizable composition.

公开(公告)号：US11584807B2

公开(公告)日：2023-02-21

申请号：US17616849

申请日：2020-06-10

申请人： TRINSEO EUROPE GMBH

发明人： Gilbert Bouquet ,  Fredericus Slijkerman

IPC分类号： C08F4/38 ,  C08F279/02

摘要： Disclosed are styrenic polymers made by a mass or solution process, where the amount of trimer consisting of styrene and/or acrylonitrile is less than about 0.50 weight percent. Also disclosed is a method of minimizing the amount of trimer consisting of styrene and/or acrylonitrile in styrenic polymers made by a mass or solution process. The method includes the steps of lowering the temperature of the polymerization reaction mixture and including more than one initiator in the polymerization reaction mixture.

公开(公告)号：US20210340321A1

公开(公告)日：2021-11-04

申请号：US17112757

申请日：2020-12-04

申请人： CPC CORPORATION, TAIWAN

发明人： Sheng-De LI ,  Ching-Hsuan LIN ,  Cheng-Liang LIU ,  Jun-Cheng YE ,  You-Lin SHIH ,  Yu An LIN ,  Wei-Yen CHEN ,  Way-Chih HSU ,  Jui-Fu KAO ,  Ming-Yu HUANG ,  Jann-Chen LIN ,  Yih-Ping WANG

IPC分类号： C08G65/48 ,  C08F4/38 ,  C08K5/3415 ,  C08K5/3432 ,  C08K5/5399

摘要： A phosphinated (2,6-dimethylphenyl ether) oligomer, preparation method thereof and cured product are provided. The phosphinated (2,6-dimethylphenyl ether) oligomer includes a structure represented by Formula (1): wherein X is a single bond, —CH2—, —O—, —C(CH3)2— or R′0, R0, R1, R2 and R3 are independently hydrogen, C1-C6 alkyl or phenyl; n and m are independently an integer from 0 to 300; p and q are independently an integer from 1 to 4; Y is hydrogen, U and V are independently an aliphatic structure.

公开(公告)号：US10266617B2

公开(公告)日：2019-04-23

申请号：US14911369

申请日：2013-10-25

申请人： CHINA PETROLEUM & CHEMICAL CORPORATION ,  CHINA PETROLEUM & CHEMICAL CORPORATION EXPLORATION & PRODUCTION RESEARCH INSTITUTE

发明人： Changming Su ,  Mengyun Zhao ,  Jianzheng Su ,  Rusheng Zhang ,  Qiulian Long ,  Suobing Zhang ,  Danian Zhang ,  Chenggang Zheng ,  Yusheng Ma

IPC分类号： C09K8/035 ,  C08F4/40 ,  C08F220/54 ,  C08F220/56 ,  C09K8/44 ,  C08F12/26 ,  C08F4/38 ,  C09K8/42 ,  C09K8/512

摘要： A cationic copolymer represented by the following formula (I) has a viscosity average molecular weight in a range from 2 million to 10 million. In the cationic copolymer, the mole fractions of three structural units corresponding to three monomers are as follows: x being in a range from 0.01 to 20%, y being in a range from 0 to 15%, and z=1−x−y. When used in the construction of leaking stoppage in an oil well, a cationic chemical lost circulation additive prepared with the cationic copolymer is mixed with an anionic drilling fluid in a section of the wellbore where lost circulation occurs. Then neutral reaction and cross linking reaction occur, so that the viscosity of the resulting mixture rapidly increases to form a space grid structure. This blocks off the leakage path, and thus effects on efficient leaking stoppage in a short time period.