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    • 1. 发明申请
    • Cellulose ethers having reactive anchor group, modified cellulose ethers obtainable therefrom and methods for the preparation thereof
    • 具有反应性锚定基团的纤维素醚,可从其获得的改性纤维素醚及其制备方法
    • US20140094599A1
    • 2014-04-03
    • US14029970
    • 2013-09-18
    • SE Tylose GmbH & Co. KG
    • Mike KLEINERT
    • C08B11/145
    • C08B11/145C08B11/02C08B11/06C08B11/08C08B11/193C08L1/26C08L1/28C08L1/282C08L1/284C08L1/288
    • Non-ionic water-soluble cellulose ethers modified with 3-azido-2-hydroxypropyl groups bound via an ether link are provided having a molar degree of substitution MSAHP in the range from 0.001 to 0.50. Exemplary cellulose ethers are alkyl celluloses, including methyl, hydroxyalkyl (e.g. hydroxyetbyl or hydroxypropyl) or alkylhydroxyalkyl cellulose (e.g. methylhydroxyethyl). Reaction products with alkyne compounds are also provided, resulting in a terminal alkyne group. The reaction of azide with the alkyne proceeds as a 1,3-dipolar cycloaddition reaction, advantageously with Cu(I) or ruthenium catalysts. A multiplicity of cellulose ethers can be obtained from the conversion reaction. Variations in the macroscopic properties can be achieved by controlled modification, ranging from increased or reduced viscosity. The reaction, taking place within a few seconds, requires only minimal catalyst. Gel formation is reversible by adjustment of the pH such that a monophasic system (high-viscous fluid) arises again from a biphasic system (gel+low-viscous water phase).
    • 提供了通过醚键结合的3-叠氮基-2-羟丙基基团改性的非离子水溶性纤维素醚,其摩尔取代度MSAHP为0.001至0.50。 示例性纤维素醚是烷基纤维素,包括甲基,羟基烷基(例如羟基乙基或羟丙基)或烷基羟烷基纤维素(例如甲基羟乙基)。 还提供了与炔化合物的反应产物,得到末端炔基。 叠氮化物与炔的反应作为1,3-偶极环加成反应,有利地用Cu(I)或钌催化剂进行。 可以从转化反应获得多种纤维素醚。 宏观特性的变化可以通过控制修饰来实现,范围从增加或降低的粘度。 在几秒钟内发生的反应只需要最少的催化剂。 凝胶形成可通过调节pH而逆转,使得单相系统(高粘性流体)再次从双相系统(凝胶+低粘度水相)产生。
    • 3. 发明授权
    • Cellulose ethers having reactive anchor group, modified cellulose ethers obtainable therefrom and methods for the preparation thereof
    • 具有反应性锚定基团的纤维素醚,可从其获得的改性纤维素醚及其制备方法
    • US09040680B2
    • 2015-05-26
    • US14029970
    • 2013-09-18
    • SE Tylose GmbH & Co. KG
    • Mike Kleinert
    • C08B11/193C08B11/145C08B11/02C08B11/06C08B11/08C08L1/26C08L1/28C08B11/14
    • C08B11/145C08B11/02C08B11/06C08B11/08C08B11/193C08L1/26C08L1/28C08L1/282C08L1/284C08L1/288
    • Non-ionic water-soluble cellulose ethers modified with 3-azido-2-hydroxypropyl groups bound via an ether link are provided having a molar degree of substitution MSAHP in the range from 0.001 to 0.50. Exemplary cellulose ethers are alkyl celluloses, including methyl, hydroxyalkyl (e.g. hydroxyethyl or hydroxypropyl) or alkylhydroxyalkyl cellulose (e.g. methylhydroxyethyl). Reaction products with alkyne compounds are also provided, resulting in a terminal alkyne group. The reaction of azide with the alkyne proceeds as a 1,3-dipolar cycloaddition reaction, advantageously with Cu(I) or ruthenium catalysts. A multiplicity of cellulose ethers can be obtained from the conversion reaction. Variations in the macroscopic properties can be achieved by controlled modification, ranging from increased or reduced viscosity. The reaction, taking place within a few seconds, requires only minimal catalyst. Gel formation is reversible by adjustment of the pH such that a monophasic system (high-viscous fluid) arises again from a biphasic system (gel+low-viscous water phase).
    • 提供了通过醚键结合的3-叠氮基-2-羟丙基基团改性的非离子水溶性纤维素醚,其摩尔取代度MSAHP为0.001至0.50。 示例性纤维素醚是烷基纤维素,包括甲基,羟烷基(例如羟乙基或羟丙基)或烷基羟烷基纤维素(例如甲基羟乙基)。 还提供了与炔化合物的反应产物,得到末端炔基。 叠氮化物与炔的反应作为1,3-偶极环加成反应,有利地用Cu(I)或钌催化剂进行。 可以从转化反应获得多种纤维素醚。 宏观特性的变化可以通过控制修饰来实现,范围从增加或降低的粘度。 在几秒钟内发生的反应只需要最少的催化剂。 凝胶形成可通过调节pH而逆转,使得单相系统(高粘性流体)再次从双相系统(凝胶+低粘度水相)产生。
    • 7. 发明申请
    • METHOD FOR PRODUCING ALKYL CELLULOSE
    • 生产烷基纤维素的方法
    • US20160168271A1
    • 2016-06-16
    • US14965149
    • 2015-12-10
    • Shin-Etsu Chemical Co., Ltd.SE Tylose GmbH & Co. KG
    • Akira KitamuraAtsushi YamamotoMitsuo NaritaHeiko NebelAndreas Schultz
    • C08B11/02
    • A23L27/80A23D7/003A23V2002/00C08B1/08C08B11/02C08L1/28
    • Provided is a method for producing an alkyl cellulose having a high viscosity and not having an excessively high gel strength. More specifically, there is provided a method for producing an alkyl cellulose comprising the steps of: mixing a cellulose pulp with a first alkali metal hydroxide solution with stirring to obtain alkali cellulose; reacting the alkali cellulose with an alkylating agent to obtain a first reaction mixture; blending a second alkali metal hydroxide solution with the first reaction mixture with stirring, without further blending of the alkylating agent, to obtain a second reaction mixture; and purifying the second reaction mixture to obtain an alkyl cellulose. There is also provided an alkyl cellulose being produced by the above method and having a degree of substitution of alkyl group of 27 to 33% by weight.
    • 提供一种具有高粘度且不具有过高凝胶强度的烷基纤维素的制备方法。 更具体地,提供了一种制备烷基纤维素的方法,包括以下步骤:在搅拌下将纤维素纸浆与第一碱金属氢氧化物溶液混合以获得碱纤维素; 使碱纤维素与烷基化剂反应得到第一反应混合物; 在搅拌下将第二碱​​金属氢氧化物与第一反应混合物混合,而不进一步共混烷基化剂,得到第二反应混合物; 并纯化第二反应混合物以获得烷基纤维素。 还提供了通过上述方法制备并具有27至33重量%的烷基取代度的烷基纤维素。
    • 8. 发明申请
    • Cellulose ethers having reactive anchor group, modified cellulose ethers obtainable therefrom and methods for the preparation thereof
    • 具有反应性锚定基团的纤维素醚,可从其获得的改性纤维素醚及其制备方法
    • US20150183887A1
    • 2015-07-02
    • US14645700
    • 2015-03-12
    • SE Tylose GmbH & Co. KG
    • Mike KLEINERT
    • C08B11/145
    • C08B11/145C08B11/02C08B11/06C08B11/08C08B11/193C08L1/26C08L1/28C08L1/282C08L1/284C08L1/288
    • Non-ionic water-soluble cellulose ethers modified with 3-azido-2-hydroxypropyl groups bound via an ether link are provided having a molar degree of substitution MSAHP in the range from 0.001 to 0.50. Exemplary cellulose ethers are alkyl cell doses, including methyl, hydroxyalkyl (e.g. hydroxyethyl hydroxypropyl) or alkylhydroxyalkyl cellulose (e.g. methylhydroxyethyl). Reaction products with alkyne compounds are also provided, resulting in a terminal alkyne group. The reaction of azide with the alkyne proceeds as a 1,3-dipolar cycloaddition reaction, advantageously with Cu(I) or ruthenium catalysts. A multiplicity of cellulose ethers can be obtained from the conversion reaction. Variations in the macroscopic properties can be achieved by controlled modification, ranging from increased or reduced viscosity. The reaction, taking place within a few seconds, requires only minimal catalyst. Gel formation is reversible by adjustment of the pH such that a monophasic system (high-viscous fluid) arises again from a biphasic system (gel+low-viscous water phase).
    • 提供了通过醚键结合的3-叠氮基-2-羟丙基基团改性的非离子水溶性纤维素醚,其摩尔取代度MSAHP为0.001至0.50。 示例性纤维素醚是烷基细胞剂量,包括甲基,羟烷基(例如羟乙基羟丙基)或烷基羟烷基纤维素(例如甲基羟乙基)。 还提供了与炔化合物的反应产物,得到末端炔基。 叠氮化物与炔的反应作为1,3-偶极环加成反应,有利地用Cu(I)或钌催化剂进行。 可以从转化反应获得多种纤维素醚。 宏观特性的变化可以通过控制修饰来实现,范围从增加或降低的粘度。 在几秒钟内发生的反应只需要最少的催化剂。 凝胶形成可通过调节pH而逆转,使得单相系统(高粘性流体)再次从双相系统(凝胶+低粘度水相)产生。