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    Process for preparing a sulfate ester of a polyhydroxy polymer
    1.
    发明授权
    Process for preparing a sulfate ester of a polyhydroxy polymer 失效
    制备聚羟基聚合物的硫酸酯的方法

    公开(公告)号：US4143226A

    公开(公告)日：1979-03-06

    申请号：US786209

    申请日：1977-04-11

    申请人： Richard G. Schweiger

    发明人： Richard G. Schweiger

    IPC分类号： C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08B31/06 ,  C08B37/00 ,  C08F8/30 ,  C08F8/34 ,  C08F8/36 ,  C08F8/42

    CPC分类号： C08F8/36 ,  C08B31/06 ,  C08B37/00 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08F8/30 ,  C08F8/34 ,  C08F8/42

    摘要： A process for preparing a cellulose sulfate ester by reacting a hydrated cellulose containing about 4 to about 12 percent by weight of water with dinitrogen tetroxide or nitrosyl chloride in the presence of a proton acceptor and a reaction solvent which is a swelling or solubilizing agent for a reaction product. Alternatively, the cellulose reactant may contain less than about 4 percent by weight of water by washing hydrated cellulose containing in excess of 4 percent of water with a highly polar aprotic solvent to reduce the water content.A process for simultaneously preparing a sulfate ester of cellulose and an alkyl nitrite by reacting a nitrite ester of cellulose with sulfur trioxide or a complex thereof to obtain a mixed nitrite:sulfate ester which is reacted with an organic alcohol containing up to about 10 carbon atoms.A process for simultaneously preparing a sulfate ester of cellulose and a mixture of an organic nitrite and an inorganic nitrate by reacting a cellulose nitrite ester with sulfur trioxide or a complex thereof to obtain a mixed nitrite:sulfate ester in the presence of dinitrogen tetroxide with water then being added and neutralizing by addition of a base.

    Process of making films, fibers or other shaped articles consisting of, or containing, polyhydroxy polymers
    2.
    发明授权
    Process of making films, fibers or other shaped articles consisting of, or containing, polyhydroxy polymers 失效
    制造由多羟基聚合物组成或含有多羟基聚合物的薄膜，纤维或其它成型制品的方法

    公开(公告)号：US4419316A

    公开(公告)日：1983-12-06

    申请号：US201806

    申请日：1980-10-29

    申请人： Richard G. Schweiger

    发明人： Richard G. Schweiger

    IPC分类号： C07C203/00 ,  C07C203/04 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08B31/06 ,  C08B37/00 ,  C08F8/30 ,  C08F8/36 ,  C08F8/42 ,  D01F11/02 ,  C08L1/16 ,  C08L5/00 ,  D01F11/04

    CPC分类号： C07C201/02 ,  C07C201/04 ,  C08B31/06 ,  C08B37/00 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08F8/44

    摘要： A process of preparing film, fibers and other shaped articles by nitrosating a polyhydroxy polymer in a reaction medium containing a solubilizing agent for the resulting polyhydroxy polymer nitrite ester and a suitable proton acceptor, bringing the reaction mixture into the desired shape and regenerating and separating the polyhydroxy polymer by contact with a protic solvent in the presence of an acid catalyst. The polyhydroxy polymer may be a polyvinyl alcohol, cellulose or other polysaccharide, and mixtures thereof. Also dissolved in the reaction medium may be an organic solvent soluble polymer substantially lacking hydroxyl groups. If mixtures of polyhydroxy polymers or of polyhydroxy polymers lacking hydroxyl groups and organic solvent soluble polymers are employed the resulting films, fibers or other shaped articles consist of homogeneous and intimate mixtures of all the polymers originally present in solution. Solutions containing polyhydroxy polymer nitrite ester or a mixture of polyhydroxy polymer nitrite ester and organic solvent soluble polymer lacking hydroxyl groups in an anhydrous medium containing a highly polar aprotic solvent or a weak tertiary amine base or both are disclosed.

    摘要翻译： 通过在含有所得多羟基聚合物亚硝酸酯的增溶剂和合适的质子受体的反应介质中亚硝化多羟基聚合物来制备膜，纤维和其它成形制品的方法，使反应混合物成为所需形状，再生和分离 多羟基聚合物与质子溶剂在酸催化剂存在下接触。 多羟基聚合物可以是聚乙烯醇，纤维素或其它多糖，以及它们的混合物。 也溶解在反应介质中的可以是基本上不含羟基的有机溶剂可溶性聚合物。 如果使用多羟基聚合物或缺乏羟基和有机溶剂可溶性聚合物的多羟基聚合物的混合物，则所得到的膜，纤维或其它成型制品由溶液中最初存在的所有聚合物的均匀和紧密的混合物组成。 公开了含有多羟基聚合物亚硝酸酯或多羟基聚合物亚硝酸酯和在含有高极性非质子溶剂或弱叔胺碱的两者的无水介质中缺少羟基的有机溶剂可溶性聚合物的混合物的溶液。

    Process for preparing a sulfate ester of a polyhydroxy polymer
    3.
    发明授权
    Process for preparing a sulfate ester of a polyhydroxy polymer 失效
    制备多羟基聚合物硫酸酯的方法

    公开(公告)号：US4177345A

    公开(公告)日：1979-12-04

    申请号：US934818

    申请日：1978-08-18

    申请人： Richard G. Schweiger

    发明人： Richard G. Schweiger

    IPC分类号： C07C203/00 ,  C07C203/04 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08B31/06 ,  C08B37/00 ,  C08F8/30 ,  C08F8/36 ,  C08F8/42

    CPC分类号： C08F8/36 ,  C08B31/06 ,  C08B37/00 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08F8/30 ,  C08F8/42

    摘要： A process for preparing a sulfate ester of a polyhydroxy polymer which is a partially substituted polysaccharide or a polyvinyl alcohol which contains ether groups, ester groups other than sulfate, or a mixture of ether groups and ester groups other than sulfate. A nitrite ester of the partially substituted polymer is reacted with sulfur trioxide or a complex thereof to obtain a mixed nitrite:sulfate ester which is then reacted with a protic solvent to remove residual nitrite ester groups.A process for preparing a substantially uniformly substituted colloidal cellulose sulfate having a degree of substitution of about 1.1 to 2.0. A nitrite ester of cellulose having a degree of substitution less than about 2 is reacted with sulfur trioxide or a complex thereof to obtain a mixed nitrite:sulfate ester which is reacted with a protic solvent to remove residual nitrite ester groups.A process for preparing a substantially uniformly substituted cellulose sulfate having a degree of substitution ranging up to about 1.1. A nitrite ester of cellulose having a degree of substitution of about 2 to below about 3 is reacted with sulfur trioxide or a complex thereof to obtain a mixed nitrite:sulfate ester which is then reacted with a protic solvent to remove residual nitrite ester groups.

    摘要翻译： 制备多羟基聚合物的硫酸酯的方法，该多羟基聚合物是部分取代的多糖或含有醚基的聚乙烯醇，除硫酸酯以外的酯基，或除了硫酸酯以外的醚基和酯基的混合物。 将部分取代的聚合物的亚硝酸酯与三氧化硫或其络合物反应，得到混合的亚硝酸盐：硫酸酯，然后与质子溶剂反应以除去残留的亚硝酸酯基团。 一种制备基本上均匀取代的取代度为约1.1至2.0的胶体硫酸纤维素的方法。 将取代度小于约2的纤维素的亚硝酸酯与三氧化硫或其配合物反应，得到与质子溶剂反应以除去残留的亚硝酸酯基团的混合亚硝酸盐：硫酸酯。 一种制备基本上均匀取代的具有高达约1.1的取代度的硫酸纤维素的方法。 具有约2至低于约3的取代度的纤维素的亚硝酸酯与三氧化硫或其络合物反应，得到混合的亚硝酸盐：硫酸酯，然后与质子溶剂反应以除去残留的亚硝酸酯基团。

    Cellulose sulfate esters
    4.
    发明授权
    Cellulose sulfate esters 失效
    硫酸纤维素酯

    公开(公告)号：US4141746A

    公开(公告)日：1979-02-27

    申请号：US786225

    申请日：1977-04-11

    申请人： Richard G. Schweiger

    发明人： Richard G. Schweiger

    IPC分类号： C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08B31/06 ,  C08B37/00 ,  C08F8/30 ,  C08F8/34 ,  C08F8/36 ,  C08F8/42 ,  C08L1/16

    CPC分类号： C08F8/36 ,  C08B31/06 ,  C08B37/00 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08F8/30 ,  C08F8/34 ,  C08F8/42

    摘要： A water-soluble sulfate ester of cellulose having a degree of substitution of about 0.3 to about 1.0 with a substantially uniform distribution of sulfate ester groups among the polymer units of the cellulose. A thickened aqueous medium containing water and said water-soluble sulfate ester of cellulose having a degree of substitution of about 0.3 to about 1.0.A water-insoluble sulfate ester of cellulose which is highly swellable in the presence of water and has a degree of substitution of up to about 0.3 with the sulfate ester groups being substantially uniformly distributed among the polymer units of the cellulose.A water-soluble colloidal cellulose sulfate ester having a degree of substitution of about 1.3 to about 2 with the sulfate ester groups being substantially uniformly distributed among the polymer units of the cellulose. A thickened aqueous medium containing water and said water-soluble cellulose sulfate ester having a degree of substitution of about 1.3 to about 2.0.A water-soluble colloidal cellulose sulfate ester having a degree of substitution of about 1.0 to about 1.3 with the sulfate ester groups being substantially uniformly distributed among the polymer units of the cellulose. A thickened aqueous medium containing water and said water-soluble sulfate ester having a degree of substitution of about 1.0 to about 1.3.

    摘要翻译： 纤维素的聚合物单元中硫酸酯基的分布基本均匀的纤维素的水溶性硫酸酯，其取代度为约0.3至约1.0。 含有水的增稠水性介质和具有约0.3至约1.0的取代度的纤维素的所述水溶性硫酸酯。

    Cross-linking of cellulose sulfate esters with tetravalent metal ions
    5.
    发明授权
    Cross-linking of cellulose sulfate esters with tetravalent metal ions 失效
    硫酸纤维素酯与四价金属离子的交联

    公开(公告)号：US4242506A

    公开(公告)日：1980-12-30

    申请号：US54683

    申请日：1979-07-05

    申请人： Richard G. Schweiger

    发明人： Richard G. Schweiger

    IPC分类号： C08L1/00 ,  C08B5/14 ,  C08B15/00

    CPC分类号： C08B15/005 ,  C08B5/14

    摘要： Cellulose sulfate esters are cross-linked with tetravalent metal ions at a threshold pH of about 3.0 or higher. The cross-linked products have a higher aqueous viscosity and are more highly pseudoplastic than the precursor cellulose sulfate and may also exhibit a relatively high yield point. The products may be employed in forming thickened aqueous compositions and cohesive gel-like compositions.The presence of other metallic ions, in addition to the tetravalent metal ions, is beneficial and enhances the viscosity increase produced by cross-linking of the cellulose sulfate with the tetravalent metal ions.The invention is directed to a process for cross-linking of cellulose sulfate esters with tetravalent metal ions, to mixtures of cellulose sulfate esters and tetravalent metal ions that may be used in producing cross-linking of the cellulose sulfate, to a cellulose sulfate product which is cross-linked with tetravalent metal ions, and to aqueous compositions containing cellulose sulfate cross-linked with tetravalent metal ions.

    摘要翻译： 硫酸纤维素酯与四价金属离子交联，阈值pH约为3.0或更高。 交联产物具有较高的水溶性粘度，并且比前体纤维素硫酸盐具有更高的假塑性，并且也可表现出较高的屈服点。 产品可用于形成增稠的含水组合物和粘性凝胶状组合物。 除了四价金属离子之外，其他金属离子的存在是有益的，并且增强了通过硫酸纤维素与四价金属离子的交联产生的粘度增加。 本发明涉及将硫酸纤维素酯与四价金属离子交联的方法，可用于生产硫酸纤维素交联的硫酸纤维素酯和四价金属离子的混合物与硫酸纤维素产物的交联 与四价金属离子交联，并含有与四价金属离子交联的含有硫酸纤维素的含水组合物。

    Nitrite esters of polyhydroxy polymers
    6.
    再颁专利
    Nitrite esters of polyhydroxy polymers 失效
    多羟基聚合物的亚硝酸酯

    公开(公告)号：USRE30459E

    公开(公告)日：1980-12-23

    申请号：US33455

    申请日：1979-04-26

    申请人： Richard G. Schweiger

    发明人： Richard G. Schweiger

    IPC分类号： C08B5/00 ,  C08B31/06 ,  C08B37/00

    CPC分类号： C08B31/06 ,  C08B37/00 ,  C08B5/00

    摘要： A polysaccharide or polyvinyl alcohol containing a mixture of nitrite ester groups with sulfate or nitrate ester groups with the mixture of ester groups being substantially uniformly distributed among the polymer units of the polysaccharide or polyvinyl alcohol.A nitrite ester of a polysaccharide alcohol having a degree of substitution of less than about 2.0. A nitrite ester of polyvinyl alcohol having a degree of substitution of 1.0 or less.