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    Process for the treatment of chitinaceous materials and for the deacetylation of chitin
    5.
    发明申请
    Process for the treatment of chitinaceous materials and for the deacetylation of chitin 失效
    用于处理壳多糖物质和甲壳质脱乙酰化的方法

    公开(公告)号：US20060205932A1

    公开(公告)日：2006-09-14

    申请号：US10554489

    申请日：2004-05-24

    申请人： Jack Cowan ,  Andre' Blanchard ,  Catherine Benoit ,  Tammy Rodrigue

    发明人： Jack Cowan ,  Andre' Blanchard ,  Catherine Benoit ,  Tammy Rodrigue

    IPC分类号： C08B37/08

    CPC分类号： C08B37/003

    摘要： Disclosed is a process for the deacetylation of chitin and a process for the treatment of chitinaceous materials to obtain chitin which processes are conducted in a non-saponifiable, non-aqueous, water insoluble liquid having a flash point greater than about 100° C., preferably a non-aromatic hydrocarbon. The process for the deacetylation of chitin comprises suspending chitin in the hydrocarbon liquid, preferably from about 0.02 g/cc to about 0.2 g/cc, mixing therewith an alkali metal hydroxide solution, and heating the suspension at a temperature at least about 70° C. for a period of time sufficient to obtain the desired degree of deacetylation. The concentration of alkali metal hydroxide in the alkali metal hydroxide solution is at least 30% by weight, preferably at least 40% by weight, and most preferably at least 50% by weight, and the quantity of alkali metal hydroxide is sufficient to provide an alkali metal hydroxide to chitin weight ratio from about (0.35)(AMHMW)/40 to about (2.5)(AMHMW)/, 40 where AMHMW is the molecular weight of the alkali metal hydroxide.

    摘要翻译： 公开了几丁质脱乙酰的方法和用于处理壳多糖物质以获得甲壳素的方法，该方法在闪点高于约100℃的不可皂化的非水不溶性水溶液中进行， 优选非芳族烃。 几丁质脱乙酰化的方法包括将烃类液体悬浮在烃液体中，优选约0.02g / cc至约0.2g / cc，与碱金属氢氧化物溶液混合，并在至少约70℃的温度下加热悬浮液 足以获得所需程度的脱乙酰化的时间。 碱金属氢氧化物溶液中碱金属氢氧化物的浓度为至少30重量％，优选至少40重量％，最优选至少50重量％，碱金属氢氧化物的量足以提供 碱金属氢氧化物与甲壳素的重量比约为（0.35）（AMHMW）/ 40至约（2.5）（AMHMW）/，40，其中AMHMW为碱金属氢氧化物的分子量。

    Oil base fluids containing hydrophilic tannins
    6.
    发明申请
    Oil base fluids containing hydrophilic tannins 审中-公开
    含有亲水单宁的油基液体

    公开(公告)号：US20060252652A1

    公开(公告)日：2006-11-09

    申请号：US10571442

    申请日：2004-10-13

    申请人： Jack Cowan

    发明人： Jack Cowan

    IPC分类号： C09K8/502

    CPC分类号： C09K8/36 ,  C09K8/32 ,  C09K8/502

    摘要： The invention provides oil base well drilling and servicing fluids (OBWDSF) containing a hydrophilic tannin to decrease the fluid loss of the OBWDSF. The hydrophilic tannin, which may be sulfited, is preferably selected from the group consisting of quebracho, wattle, and mixtures thereof. The OBWDSF will contain from about 50% to about 100% by volume of a continuous oil phase, and generally will contain up to about 50% by volume of a discontinuous, emulsified aqueous phase. The OBWDSF can also contain other fluid loss control additives other than the hydrophilic tannin, preferably selected from the group consisting of resins, synthetic polymers, Gilsonite, organophilic polyphenolic compounds, and mixtures thereof. The invention also provides a method of decreasing the fluid loss from an OBWDSF which comprises incorporating into the OBWDSF a hydrophilic tannin.

    摘要翻译： 本发明提供含有亲水单宁的油基钻井和维修流体（OBWDSF），以减少OBWDSF的流体损失。 可以是亚硫酸盐的亲水性单宁优选选自quebracho，wattle，以及它们的混合物。 OBWDSF将含有约50％至约100％体积的连续油相，并且通常将含有至多约50体积％的不连续乳化水相。 OBWDSF还可以含有除亲水性单宁以外的其它流体损失控制添加剂，优选选自树脂，合成聚合物，Gilsonite，有机多元酚化合物及其混合物。 本发明还提供了降低OBWDSF的流体损失的方法，其包括将OBWDSF掺入亲水性单宁中。