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    • 1. 发明申请
    • CONVERSION METHOD
    • 转换方法
    • US20120029247A1
    • 2012-02-02
    • US12676831
    • 2008-09-03
    • John HolbreyMarkus FanselowKenneth Richard SeddonLaurent VanoyeAnna Zheng
    • John HolbreyMarkus FanselowKenneth Richard SeddonLaurent VanoyeAnna Zheng
    • C07C29/00C13K1/02
    • C12P7/10C07H3/02C08B1/003C08B15/02Y02E50/16Y02E50/17
    • A process is described for the preparation of water-soluble cellulose hydrolysis products, which comprises admixing cellulose with an ionic liquid capable of solvating or dissolving at least some of the cellulose, said ionic liquid being a compound comprised solely of cations and anions and which exists in a liquid state at a temperature at or below 15O° C., the cations in said ionic liquid having the general formula (I), in which Z represents a nitrogen or phosphorus atom, R1 represents a methyl or ethyl group, each of R2 and R3, which may be the same or different, is selected from C4-3alkyl, optionally-substituted benzyl, optionally-substituted phenyl, and C5-7 cycloalkyl, and R4 represents C1-8 alkyl, optionally-substituted benzyl, optionally-substituted phenyl or C5-7cyclohexyl; in which the optional substituents on a benzyl or phenyl ring are one, two or three substituents selected from C1-4alkyl or alkoxy groups, halogen atoms and nitro groups; and treating the resulting solvate or solution with an acid in the presence of water, said acid having a pKa in water of less than 2 at 25° C.
    • 描述了用于制备水溶性纤维素水解产物的方法,其包括将纤维素与能够溶解或溶解至少一些纤维素的离子液体混合,所述离子液体是仅由阳离子和阴离子组成的化合物,其存在 在等于或低于150℃的液态下,具有通式(I)的所述离子液体中的阳离子,其中Z表示氮或磷原子,R1表示甲基或乙基,R2各自表示 和可以相同或不同的R 3选自C 4-3烷基,任选取代的苄基,任选取代的苯基和C 5-7环烷​​基,R 4表示C 1-8烷基,任选取代的苄基,任选取代的 苯基或C 5-7环己基; 其中苄基或苯环上的任选取代基是选自C 1-4烷基或烷氧基,卤素原子和硝基的一个,两个或三个取代基; 并在酸存在下用酸处理得到的溶剂合物或溶液,所述酸在25℃下的水中pKa小于2。
    • 4. 发明授权
    • Conversion method
    • 转换方法
    • US08574368B2
    • 2013-11-05
    • US12676831
    • 2008-09-03
    • John HolbreyMarkus FanselowKenneth Richard SeddonLauret VanoyeAnna Zheng
    • John HolbreyMarkus FanselowKenneth Richard SeddonLauret VanoyeAnna Zheng
    • C13K1/02
    • C12P7/10C07H3/02C08B1/003C08B15/02Y02E50/16Y02E50/17
    • A process is described for the preparation of water-soluble cellulose hydrolysis products, which comprises admixing cellulose with an ionic liquid capable of solvating or dissolving at least some of the cellulose, said ionic liquid being a compound comprised solely of cations and anions and which exists in a liquid state at a temperature at or below 150° C., the cations in said ionic liquid having the general formula (I), in which Z represents a nitrogen or phosphorus atom, R1 represents a methyl or ethyl group, each of R2 and R3, which may be the same or different, is selected from C4-3alkyl, optionally-substituted benzyl, optionally-substituted phenyl, and C5-7 cycloalkyl, and R4 represents C1-8 alkyl, optionally-substituted benzyl, optionally-substituted phenyl or C5-7cyclohexyl; in which the optional substituents on a benzyl or phenyl ring are one, two or three substituents selected from C1-4alkyl or alkoxy groups, halogen atoms and nitro groups; and treating the resulting solvate or solution with an acid in the presence of water, said acid having a pKa in water of less than 2 at 25° C.
    • 描述了用于制备水溶性纤维素水解产物的方法,其包括将纤维素与能够溶解或溶解至少一些纤维素的离子液体混合,所述离子液体是仅由阳离子和阴离子组成的化合物,并且存在 在等温或低于150℃的液态下,具有通式(I)的所述离子液体中的阳离子,其中Z表示氮或磷原子,R1表示甲基或乙基,R2各自表示 和可以相同或不同的R 3选自C 4-3烷基,任选取代的苄基,任选取代的苯基和C 5-7环烷​​基,R 4表示C 1-8烷基,任选取代的苄基,任选取代的 苯基或C 5-7环己基; 其中苄基或苯环上的任选取代基是选自C 1-4烷基或烷氧基,卤素原子和硝基的一个,两个或三个取代基; 并在酸存在下用酸处理得到的溶剂合物或溶液,所述酸在25℃下的水中pKa小于2。