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    • 2. 发明授权
    • Cellulose dope and method for producing the same
    • 纤维素涂料及其制造方法
    • US07108907B1
    • 2006-09-19
    • US09546665
    • 2000-10-25
    • Chihiro YamaneKunihiko OkajimaSeiji Shimizu
    • Chihiro YamaneKunihiko OkajimaSeiji Shimizu
    • D04H1/00D04H3/00B32B23/00
    • C08B1/003D01F2/02Y10T428/249924Y10T428/2913Y10T428/2965
    • A cellulose dope comprising an aqueous sodium hydroxide solution and cellulose dissolved in the solution, wherein the cellulose dope has a sodium hydroxide concentration (CNa) of from 6.5 to 11% by weight, a cellulose content (Cc) of from 5 to 10% by weight, a viscosity average degree of polymerization (DPc) of the cellulose of from 350 to 1,200 and a cellulose dissolution ratio (Sc) of 99.0% by weight or more, and wherein the zero-shear viscosity (η0) and the cellulose content (Cc) of the cellulose dope and the viscosity average degree of polymerization (DPc) of the cellulose in the cellulose dope satisfy the following formula (1): η0=kCcm×DPcp   (1) wherein: η0 represents the zero-shear viscosity (mPa·s) of the cellulose dope, Cc represents the cellulose content (% by weight) of the cellulose dope, DPc represents the viscosity average degree of polymerization of the cellulose in the cellulose dope, k=3.9×10−11, m is a number of from 5 to 7, and p is a number of from 3 to 4.
    • 一种含有氢氧化钠水溶液和溶于该溶液中的纤维素的纤维素原液,其中纤维素掺杂物的氢氧化钠浓度为6.5-11%(重量),纤维素含量(Cc )为5〜10重量%,纤维素的粘度平均聚合度(DPc)为350〜1200,纤维素溶解率(Sc)为99.0重量%以上,其中零剪切粘度 纤维素掺杂物的纤维素含量(Cc)和纤维素掺杂物中的纤维素的粘度平均聚合度(DPc)满足下式(1):<<< 0> -line-formula description =“In-line Formulas”end =“lead”?> eta = kCc xDPc

      (1) <?in-line-formula description =“In-line Formulas”end =“tail”?>其中:eta 0表示纤维素原料的零剪切粘度(mPa.s),Cc 表示纤维素的纤维素含量(重量%) 糊剂,DPc表示纤维素原液中纤维素的粘度平均聚合度,k = 3.9×10 -6,m为5〜7的数,p为3 到4。

    • 3. 发明授权
    • Process for producing celluose moldings
    • 生产纤维素成型品的工艺
    • US5401447A
    • 1995-03-28
    • US87798
    • 1993-11-04
    • Toshihiko MatsuiChihiro Yamane
    • Toshihiko MatsuiChihiro Yamane
    • C08J5/00C08J5/18C08J7/00C08L1/02D01F2/06B29C35/16B29C47/00D01D5/06D01F2/02
    • C08J5/18C08J5/00C08L1/02D01F2/06C08J2301/00C08J2301/02
    • A method for producing a cellulose shaped article characterized by causing cellulose dope substantially composed of an alkali soluble cellulose and an aqueous alkali solution having an alkali concentration of 5 to 15% by weight to coagulate in an aqueous acidic solution having a temperature of at least the freezing temperature and less than 20.degree. C., then drawing the resultant solid 1.05 fold to less than 2.0 fold, then performing heat treatment. It is possible to provide a process free from the generation of waste gas and the danger of explosion during the molding process and also free from environmental pollution and it is possible to provide a cellulose shaped article having mechanical properties of the same extent of existing cellulose shaped articles in terms of physical properties.
    • PCT No.PCT / JP92 / 01514 Sec。 371日期:1993年11月4日 102(e)日期1993年11月4日PCT 1991年11月19日PCT PCT。 出版物WO93 / 10171 日本特愿1993年5月27日。一种纤维素成型制品的制造方法,其特征在于,使碱性水溶性纤维素和碱浓度为5〜15重量%的碱性水溶液基本上由纤维素糊剂构成, 至少冷冻温度至少20℃的温度,然后将所得固体1.05倍拉伸至小于2.0倍,然后进行热处理。 可以提供一种没有废气产生的过程和在成型过程中产生爆炸的危险并且也不受环境污染,并且可以提供具有与现有纤维素形状相同程度的机械性能的纤维素成形制品 物理性质的文章。