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    NEW PROPANOATES AND PROCESSES FOR PREPARING THE SAME
    2.
    发明公开
    NEW PROPANOATES AND PROCESSES FOR PREPARING THE SAME 有权
    新丙酸及其制造方法

    公开(公告)号：EP2315739A1

    公开(公告)日：2011-05-04

    申请号：EP09789061.0

    申请日：2009-08-04

    申请人： DuPont Electronic Polymers L.P.

    发明人： SHEEHAN, Michael, T. ,  SOUNIK, James, R. ,  CLARK, George, W.

    IPC分类号： C07C69/734 ,  C07C67/31 ,  G03F7/023 ,  G03F7/039

    CPC分类号： C07C69/708 ,  C07B2200/07 ,  C07C67/31 ,  G03F7/0226 ,  C07C69/734

    摘要： A process for preparing proponates which comprises the steps of (i) supplying a solution of methanol containing 4-hydroxyphenylmethylcarbinol, (ii) subjecting said solution to an acid catalyzed displacement reaction for a sufficient period of time and under suitable conditions of temperature and pressure to convert substantially all of said carbinol to 4-hydroxyphenylmethylcarbinol methyl ether in solution, (iii) replacing the methanol in said ether containing solution with a second solvent and (iv) reacting the ether containing ethyl lactate solution with a suitable acid catalyst for a sufficient period of time and under suitable conditions of temperature and pressure to form said propanoates. New compositions of matter which comprise the propanoates, prepared in the above manner, have application in the electronic chemicals market such as in a photoresist composition.

    PREPARATION OF HOMO-, CO- AND TERPOLYMERS OF SUBSTITUTED STYRENES
    4.
    发明授权
    PREPARATION OF HOMO-, CO- AND TERPOLYMERS OF SUBSTITUTED STYRENES 有权
    均聚物，共聚物和三元共聚物OFF取代的苯乙烯的制备

    公开(公告)号：EP1497341B1

    公开(公告)日：2009-06-10

    申请号：EP03719712.6

    申请日：2003-04-10

    申请人： DuPont Electronic Polymers L.P.

    发明人： SHEEHAN, Michael, T. ,  SOUNIK, James, R.

    IPC分类号： C08F8/00 ,  C08F6/02 ,  C08F12/24

    CPC分类号： C08F6/04 ,  C08F6/02 ,  C08F8/14 ,  C08F2800/10 ,  C08F2800/20 ,  G03F7/0045 ,  G03F7/039 ,  C08L25/18 ,  C08L25/00 ,  C08F212/14

    摘要： A novel one-pot cost efficient process for the preparation of homo-, co- and terpolymers of p-hydroxystyrene or substituted p-hydroxystyrene and alkyl acrylates. The process involves polymerization of esters of p-hydroxystyrene (or its substituted analogs), alkyl acrylate monomers and/or one or more of ethylenically unsaturated monomers in an alcohol solvent in the presence of a free radical initiator. The reaction mixture containing the so formed polymer is subjected to transesterification conditions using a catalytic amount of catalyst to result in co-and/or terpolymers of p-hydroxystyrene without cleavage of the alkyl ester in the acrylate repeat unit, and then removing the catalyst from the system. Preferred embodiments include homopolymers of p-hydroxystyrene, copolymer of p-hydroxystyrene and tert-butyl acrylate and terpolymer of p-hydroxystyrene, tert-butyl acrylate and styrene. These polymers have a wide variety of applications including as photoresists in microelectronics industry.