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    High temperature PHA extraction using PHA-poor solvents
    2.
    发明授权
    High temperature PHA extraction using PHA-poor solvents 失效
    使用PHA不良溶剂进行高温PHA萃取

    公开(公告)号：US6087471A

    公开(公告)日：2000-07-11

    申请号：US60120

    申请日：1998-04-14

    申请人： Devdatt L. Kurdikar ,  Fred E. Strauser ,  A. John Solodar ,  Mark D. Paster

    发明人： Devdatt L. Kurdikar ,  Fred E. Strauser ,  A. John Solodar ,  Mark D. Paster

    IPC分类号： C08G63/89 ,  C12P7/62 ,  C08F6/00

    CPC分类号： C08G63/89 ,  C12P7/625

    摘要： Polyhydroxyalkanoate (PHA) polyester is extracted from biomass by dissolving the PHA in a non-halogenated solvent which comprises a PHA-poor solvent that dissolves less than 1% of the PHA at temperatures less than the solvent boiling point, or a mixture of a PHA-poor solvent and a PHA-good solvent. Following extraction of PHA under pressure at a temperature above about 80.degree. C., typically above the boiling point of the PHA-poor solvent, PHA polymer is precipitated by cooling the PHA-enriched solvent mixture. Suitable PHA-poor solvents can include linear and branched R.sub.1 --OH alcohols and R.sub.2 --COOR.sub.3 esters where R.sub.1 =C.sub.1 -C.sub.4, R.sub.2 =H, C.sub.1,C.sub.2, or C.sub.3, and R.sub.3 =C.sub.1 -C.sub.5.

    摘要翻译： 通过将PHA溶解在非卤化溶剂中，从生物质中提取聚羟基链烷酸酯（PHA）聚酯，该非卤化溶剂包含在小于溶剂沸点的温度下溶解小于1％的PHA的PHA不良溶剂，或PHA的混合物 - 溶剂和PHA-良好的溶剂。 在高于约80℃，通常高于不溶于PHA的溶剂的沸点的压力下萃取PHA后，通过冷却富含PHA的溶剂混合物沉淀PHA聚合物。 合适的不溶于PHA的溶剂可以包括直链和支链的R1-OH醇和R2-COOR3酯，其中R1 = C1-C4，R2 = H，C1，C2或C3，R3 = C1-C5。

    Continuous method of agglomerating aqueous latices
    3.
    发明授权
    Continuous method of agglomerating aqueous latices 失效
    凝胶水凝胶的连续方法

    公开(公告)号：US4043955A

    公开(公告)日：1977-08-23

    申请号：US551791

    申请日：1975-02-20

    申请人： Mark D. Paster

    发明人： Mark D. Paster

    IPC分类号： C08C1/065 ,  C08L91/00

    CPC分类号： C08C1/065

    摘要： There is disclosed a continuous method for agglomerating lactices of a polymer to provide large particles. An acid anhydride solution is continuously admixed with an aqueous latex of a polymer followed by passing the admixture through a conduit with laminar-flow wherein the passage-time through said conduit is sufficient to hydrolyze the acid anhydride and produce agglomeration of said particles providing an agglomerated admixture followed by continuously stabilizing said agglomerated admixture with an emulsifying material providing a stabilized agglomerated latex.

    摘要翻译： 公开了一种用于聚集聚合物的乳状物以提供大颗粒的连续方法。 将酸酐溶液与聚合物的水性胶乳连续混合，然后使混合物通过具有层流的导管，其中通过所述导管的通过时间足以水解酸酐并产生所述颗粒的附聚，提供聚集的 混合物，然后用提供稳定的聚集胶乳的乳化材料连续稳定所述附聚的混合物。

    Methods of PHA extraction and recovery using non-halogenated solvents
    4.
    发明授权
    Methods of PHA extraction and recovery using non-halogenated solvents 失效
    使用非卤化溶剂萃取和回收PHA的方法

    公开(公告)号：US06043063A

    公开(公告)日：2000-03-28

    申请号：US60121

    申请日：1998-04-14

    申请人： Devdatt L. Kurdikar ,  Fred E. Strauser ,  A. John Solodar ,  Mark D. Paster ,  Jawed Asrar

    发明人： Devdatt L. Kurdikar ,  Fred E. Strauser ,  A. John Solodar ,  Mark D. Paster ,  Jawed Asrar

    IPC分类号： C08G63/06 ,  C08G63/89 ,  C12P7/62 ,  C12P7/42 ,  C12N1/20

    CPC分类号： C08G63/89 ,  C12P7/625 ,  C08G63/06

    摘要： Polyhydroxyalkanoate (PHA) polyester is extracted from biomass by dissolving the PHA in a non-halogenated solvent which comprises a PHA-good solvent or a mixture thereof. Suitable PHA-good solvents can be selected from the disclosed alcohols, esters, amides and ketones. The PHA can be recovered, for example, by cooling, by solvent evaporation, or by addition of a PHA-poor solvent, wherein the PHA-poor solvent preferably dissolves less than about 1% (w/v) of the PHA at a temperature below the solvent boiling point. Preferred PHA types for use in the invention are poly (hydroxybutyrate-co-hydroxyvalerate), poly(3-hydroxybutyrate-co-4-hydroxybutyrate), and polymers/copolymers of hydroxyterminated polyhydroxybutyrate.

    摘要翻译： 通过将PHA溶解在包含PHA良溶剂或其混合物的非卤化溶剂中，从生物质中提取聚羟基链烷酸酯（PHA）聚酯。 合适的PHA-良好溶剂可以选自所公开的醇，酯，酰胺和酮。 可以例如通过冷却，通过溶剂蒸发或通过加入不溶于PHA的溶剂来回收PHA，其中PHA不良溶剂优选在温度下溶解小于约1％（w / v）的PHA 低于溶剂沸点。 用于本发明的优选PHA类型是聚（羟基丁酸酯 - 共 - 羟基戊酸酯），聚（3-羟基丁酸酯 - 共-4-羟基丁酸酯）和羟基封端的聚羟基丁酸酯的聚合物/共聚物。

    Process for preparing isocyanates
    5.
    发明授权
    Process for preparing isocyanates 失效
    异氰酸酯的制备方法

    公开(公告)号：US5451697A

    公开(公告)日：1995-09-19

    申请号：US173010

    申请日：1993-12-27

    申请人： William D. McGhee ,  Mark D. Paster ,  Dennis P. Riley ,  Kenneth W. Ruettimann ,  A. John Solodar ,  Thomas E. Waldman

    发明人： William D. McGhee ,  Mark D. Paster ,  Dennis P. Riley ,  Kenneth W. Ruettimann ,  A. John Solodar ,  Thomas E. Waldman

    IPC分类号： C07C265/04 ,  C07C263/04 ,  C07C265/14

    CPC分类号： C07C263/04

    摘要： A process for preparing isocyanates comprising contacting carbon dioxide and a primary amine in the presence of an aprotic organic solvent and a base selected from the group consisting of a phosphazene compound, an organic, nitrogenous base and mixtures thereof, wherein the organic, nitrogenous base selected from the group consisting of guanidine compounds, amidine compounds, tertiary amines and mixtures thereof to produce the corresponding ammonium carbamate salt, reacting the ammonium carbamate salt with an anhydride dehydrating agent to produce a product stream comprising the corresponding isocyanate, the aprotic organic solvent and the base salt derived from the anhydride, separating the base salt from the product stream, recovering and recycling the base, and regenerating and recycling the anhydride dehydrating agent.

    摘要翻译： 一种制备异氰酸酯的方法，包括在非质子有机溶剂和选自磷腈化合物，有机，含氮碱及其混合物的基团的存在下存在下使二氧化碳和伯胺接触，其中所选择的有机，含氮碱 由胍化合物，脒化合物，叔胺及其混合物组成的组，以产生相应的氨基甲酸铵盐，使氨基甲酸铵盐与酸酐脱水剂反应，以产生包含相应的异氰酸酯，非质子有机溶剂和 从酸酐衍生的碱盐，从产物流中分离碱盐，回收和再循环碱，再生和再循环酸酐脱水剂。

    Apparatus for the continuous agglomeration of aqueous latices
    6.
    发明授权
    Apparatus for the continuous agglomeration of aqueous latices 失效
    装置连续喷洒水分

    公开(公告)号：US3988010A

    公开(公告)日：1976-10-26

    申请号：US551792

    申请日：1975-02-20

    申请人： Mark D. Paster

    发明人： Mark D. Paster

    IPC分类号： C08C1/065 ,  B01F7/22

    CPC分类号： C08C1/065

    摘要： There is disclosed an apparatus for the continuous agglomeration of aqueous latices to provide large particles comprising a mixing zone for forming an admixture of an agglomerating solution and a latex having mixing means and a perforated member as one wall section providing a flowthrough port for the admixture inducing laminar-flow in the admixture, an annular conduit to carry the admixture during agglomeration, a low-shear zone to carry and stabilize the agglomerated admixture and a withdrawal means having at least one diameter reduction to flow-mix the stabilized agglomerated admixture during withdrawal.