Pour point depressants for paraffin solutions
    1.
    发明授权
    Pour point depressants for paraffin solutions 失效
    倾点下降剂用于石蜡溶液

    公开(公告)号:US4650596A

    公开(公告)日:1987-03-17

    申请号:US745375

    申请日:1985-06-17

    CPC分类号: C10L1/2364 C09K8/524

    摘要: An ester/amide copolymer useful as a pour-point depressant, wherein: the ester comonomer is at least one acrylic acid or methacrylic acid--C.sub.16-24 aliphatic alcohol ester; the amide comonomer is at least one acrylamide or methacrylamide, unsubstituted or substituted at the nitrogen atom; and the mol ratio of ester to amide is about 2-10:1.

    摘要翻译: 用作倾点抑制剂的酯/酰胺共聚物,其中:酯共聚单体为至少一种丙烯酸或甲基丙烯酸-C16-24脂族醇酯; 酰胺共聚单体是至少一种未被取代或在氮原子上取代的丙烯酰胺或甲基丙烯酰胺; 酯与酰胺的摩尔比为约2-10:1。

    Esters of carboxylic acids of medium chain-length as a component of the
oil phase in invert drilling muds
    2.
    发明授权
    Esters of carboxylic acids of medium chain-length as a component of the oil phase in invert drilling muds 失效
    中链长度的羧酸酯作为反相钻井泥浆中油相的组分

    公开(公告)号:US5403822A

    公开(公告)日:1995-04-04

    申请号:US68563

    申请日:1993-05-27

    CPC分类号: C09K8/34

    摘要: The invention describes the use of selected esters, fluid at room temperature and with flash points above 80.degree. C., from monocarboxylic acids of synthetic and/or natural origin with 6 to 11 carbon atoms and mono- and/or polyfunctional alcohols as the oil phase or a component of the oil phase of invert drilling muds, which are suitable for environment-friendly development of petroleum and natural gas deposits and in a continuous oil phase contain a dispersed aqueous phase together with emulsifiers, weighting agents, fluid-loss additives and preferably further conventional additives. In a further embodiment the invention relates to invert-drilling fluids of the types mentioned, which are characterized in that the oil phase contains esters of monocarboxylic acids of synthetic and/or natural origin with 6 to 11 carbon atoms and with mono- and/or polyfunctional alcohols preferably in admixture with other components from the class of ecologically acceptable compounds.

    摘要翻译: 本发明描述了在室温下和闪点高于80℃的选择的酯,来自合成和/或天然来源的具有6至11个碳原子的一元羧酸和单和/或多官能醇作为油的用途 相位或反相钻井泥浆油相的组分,适用于石油和天然气沉积物的环境友好型开发,连续油相中含有分散的水相以及乳化剂,增重剂,流体损失添加剂和 优选进一步的常规添加剂。 在另一个实施方案中,本发明涉及所述类型的反向钻井液,其特征在于油相含有合成和/或天然来源的具有6至11个碳原子的一元羧酸酯和单 - 和/或 多官能醇优选与来自生态可接受的化合物类的其它组分混合。

    Esters of unsaturated carboxylic acids
    6.
    发明授权
    Esters of unsaturated carboxylic acids 失效
    不饱和羧酸酯

    公开(公告)号:US4762946A

    公开(公告)日:1988-08-09

    申请号:US851981

    申请日:1986-04-14

    摘要: Polymeric pour point depressants are described which are prepared from new esters of .alpha.,.beta.-olefinically unsaturated carboxylic acids of the formulaR.sub.1 --CO--[--O--A--CO--]--.sub.n ORwhereinR.sub.1 --CO-- is an .alpha.,.beta.-olefinically unsaturated carboxylic acid residue containing from 3 to 6 carbon atoms,R is a saturated or unsaturated hydrocarbon radical containing from 10 to 24 carbon atoms,--[--O--A--CO--]-- is a residue of a hydroxycarboxylic acid having from 2 to 6 carbon atoms,A is an aliphatic radical having from 1 to 5 carbon atoms, andn is a number having a value of from 1 to 18.

    摘要翻译: 描述了由式R1-CO - [ - OA-CO - ] - nOR的α,β-烯属不饱和羧酸的新酯制备的聚合倾点下降剂,其中R1-CO-是α,β-烯属不饱和的 含有3至6个碳原子的羧酸残基,R是含有10至24个碳原子的饱和或不饱和烃基, - [ - OA-CO - ] - 是具有2至6个碳原子的羟基羧酸的残基 A是具有1至5个碳原子的脂族基团,n是1至18的数值。