Process for the production in watery emulsion of blends of polyvinylic
alcohols and respective products obtained
    1.
    发明授权
    Process for the production in watery emulsion of blends of polyvinylic alcohols and respective products obtained 失效
    制备聚乙烯醇共混物的水性乳液和所得产品的方法

    公开(公告)号:US5397815A

    公开(公告)日:1995-03-14

    申请号:US778230

    申请日:1991-12-13

    申请人: Francesco Carlin

    发明人: Francesco Carlin

    IPC分类号: C08F2/00 C08F8/12 C08K5/00

    CPC分类号: C08F2/004 C08F8/30

    摘要: Process for the preparation of an aqueous emulsion of two or more polyvinyl alcohols (PVA) for the production of polyvinylchloride (PVC-S) in an aqueous suspension in which at least a first polyvinylacetate (PVAc) with molecular weight between 30 and 110K is utilized and, with technique of alcoholisis acid or basic, to carry out the trans-esterification of the PVAc until a saponification number between 598 and 135 is attained.

    摘要翻译: PCT No.PCT / IT90 / 00052 Sec。 371日期1991年12月13日 102(e)日期1991年12月13日PCT提交1990年5月17日PCT公布。 出版物WO90 / 15827 日期为1990年12月27日。在水性悬浮液中制备两种或多种用于生产聚氯乙烯(PVC-S)的聚乙烯醇(PVA)的水性乳液的方法,其中至少具有分子量的第一聚乙酸乙烯酯 使用30至110K之间的重量,并且用醇酸或碱的技术进行PVAc的酯交换,直到达到598至135之间的皂化值。

    Method for the application of anti-fouling agents
    2.
    发明授权
    Method for the application of anti-fouling agents 失效
    防污剂的应用方法

    公开(公告)号:US07338633B2

    公开(公告)日:2008-03-04

    申请号:US10510003

    申请日:2002-04-11

    申请人: Francesco Carlin

    发明人: Francesco Carlin

    IPC分类号: C23F11/00 C08F2/00

    CPC分类号: C08F2/004

    摘要: There is described a method for applying an aqueous solution to the internal walls of a reactor, before the start of the polymerization reaction of vinyl chloride and/or vinyl acetate, which aqueous solution contains a salt of an anti-scaling agent which comprises a product of condensation of an aldehyde, a phenolic compound and an aromatic carboxylic acid hydroxylated at the aromatic nucleus, wherein the pH-value of this aqueous solution is changed, during the application, to a pH-value of less than 5 and, preferably, in the range between 2.5 and 4.5.

    摘要翻译: 描述了在氯乙烯和/或乙酸乙烯酯的聚合反应开始之前将水溶液施加到反应器的内壁的方法,该水溶液含有防垢剂的盐,其包含产物 醛,酚类化合物和在芳香族核羟基化的芳香羧酸的缩合反应,其中将该水溶液的pH值在施用期间改变为小于5的pH值,优选在 范围在2.5和4.5之间。

    Anti-scaling agent for coating of polymerization reactors
    3.
    发明授权
    Anti-scaling agent for coating of polymerization reactors 失效
    用于聚合反应器涂层的防垢剂

    公开(公告)号:US6069199A

    公开(公告)日:2000-05-30

    申请号:US952086

    申请日:1998-02-13

    CPC分类号: C08F2/004

    摘要: The object of the invention is to provide a liquid anti-scaler for coating polymerizing reactors obtained by a condensation reaction of naphthol with an aldehydic cross-linking product, wherein the cross-linking product is the reaction product of hydrosulfite and formaldehyde. It contains hydrosulfite and/or radical bisulfites and/or bisulfite. The condensate is made in such a way that in the absence of oxygen, it is in the form of liquid of clear transparent color.

    摘要翻译: PCT No.PCT / IT96 / 00093 Sec。 371日期1998年2月13日 102(e)1998年2月13日PCT PCT 1996年5月7日PCT公布。 公开号WO96 / 35724 日本特开1996年11月14日本发明的目的是提供一种用于涂布通过萘酚与醛交联产物的缩合反应获得的聚合反应器的液体防垢剂,其中交联产物是连二亚硫酸盐和 甲醛。 它含有亚硫酸氢盐和/或自由基亚硫酸氢盐和/或亚硫酸氢盐。 冷凝物的制备方法是在没有氧气的情况下,其呈透明透明色液体的形式。

    Method for the application of anti-fouling agents
    4.
    发明申请
    Method for the application of anti-fouling agents 失效
    防污剂的应用方法

    公开(公告)号:US20050118333A1

    公开(公告)日:2005-06-02

    申请号:US10510003

    申请日:2002-04-11

    申请人: Francesco Carlin

    发明人: Francesco Carlin

    CPC分类号: C08F2/004

    摘要: There is described a method for applying an aqueous solution to the internal walls of a reactor, before the start of the polymerization reaction of vinyl chloride and/or vinyl acetate, which aqueous solution contains a salt of an anti-scaling agent which comprises a product of condensation of an aldehyde, a phenolic compound and an aromatic carboxylic acid hydroxylated at the aromatic nucleus, wherein the pH-value of this aqueous solution is changed, during the application, to a pH-value of less than 5 and, preferably, in the range between 2.5 and 4.5.

    摘要翻译: 描述了在氯乙烯和/或乙酸乙烯酯的聚合反应开始之前将水溶液施加到反应器的内壁的方法,该水溶液含有防垢剂的盐,其包含产物 醛,酚类化合物和在芳香族核羟基化的芳香羧酸的缩合反应,其中将该水溶液的pH值在施用期间改变为小于5的pH值,优选在 范围在2.5和4.5之间。