会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明公开
    • Polymer solutions
    • Polymerlösungen
    • EP0764685A2
    • 1997-03-26
    • EP96306790.5
    • 1996-09-18
    • COURTAULDS FIBRES (HOLDINGS) LIMITED
    • Urben, Peter George
    • C08K5/32C08L1/00
    • C08B1/003C08K5/32C08L5/00
    • A method of making a solution of a polysaccharide, particularly cellulose, in an aqueous tertiary amine N-oxide solvent which exhibits good thermal stability is disclosed. The solution contains at least one compound selected from the group consisting of compounds of the formula ArCR 1 =NNR 2 R 3 , where Ar represents an aromatic group which comprises an aromatic ring having six pi-electrons and substituted by a hydroxy group in the ortho position, optionally further substituted on the aromatic ring; R 1 represents hydrogen or C 1 -C 4 n-alkyl; R 2 represents hydrogen, C 1 -C 4 alkyl or C 6 -C 10 aryl; and R 3 represents hydrogen, C 1 -C 4 alkyl, C 6 -C 10 aryl or R 4 CO, where R 4 represents hydrogen, C 1 -C 4 alkyl, C 6 -C 10 aryl, XCONR 2 NH 2 or XCONR 2 N=CR 1 Ar, where X represents a chemical bond, a C 1 -C 4 alkylene or C 2 -C 4 alkylidene group or a C 6 -C 10 arylene group; or R 2 and R 3 together represent ArCR 1 ; and of one or more precursors of such compounds; and of compounds of the formula R 5 CONR 1 NH 2 wherein R 5 represents hydrogen, C 1-4 alkyl, C 6-10 aryl or XCONR 1 NH 2 . When the groups R 2 , R 3 and R 4 are alkyl or aryl groups, they may optionally be substituted alkyl or aryl groups. When the groups R 2 , R 3 and R 4 are aryl groups, they may optionally be carbocyclic or heterocyclic aryl groups. The solutions are suited to being formed into extruded articles such as fibres and films.
    • 公开了一种在显示良好热稳定性的叔胺N-氧化物水溶液中制备多糖,特别是纤维素溶液的方法。 该溶液含有至少一种选自由式ArCR 1 = NNR 2 R 3的化合物组成的组中的化合物,其中Ar表示芳族基团,该芳族基团包含具有六个π电子并由 邻位羟基,任选在芳环上进一步取代; R 1表示氢或C 1 -C 4正烷基; R 2表示氢,C 1 -C 4烷基或C 6 -C 10芳基; 并且R 3表示氢,C 1 -C 4烷基,C 6 -C 10芳基或R 4 CO,其中R 4表示氢,C 1 -C 4烷基,C 6 -C 10芳基,XCONR 2 NH 2或XCONR 2 N = CR 1 Ar,其中X表示化学键,C 1 -C 4亚烷基或C 2 -C 4亚烷基或C 6 -C 10亚芳基; 或R 2和R 3一起表示ArCR 1; 和这种化合物的一种或多种前体; 和式R 5 CONR 1 NH 2的化合物,其中R 5表示氢,C 1-4烷基,C 6-10芳基或XCONR 1 NH 2。 当基团R 2,R 3和R 4是烷基或芳基时,它们可以任选被取代的烷基或芳基。 当基团R 2,R 3和R 4是芳基时,它们可以任选地是碳环或杂环芳基。 该溶液适于形成诸如纤维和薄膜的挤压制品。
    • 9. 发明公开
    • Tampon production
    • Tamponherstellung
    • EP0716170A2
    • 1996-06-12
    • EP95308854.9
    • 1995-12-06
    • COURTAULDS FIBRES (HOLDINGS) LIMITED
    • Frankham, Stephan AndrewLindsay, AngelaWilkes, Andrew George
    • D02J1/00
    • D01D5/253A61F13/2051A61F13/2082D01F2/06D02J1/00
    • A method for the production of a tampon (32) formed of a blend of regenerated solid cellulosic viscose fibres, said blend including a first set of fibres having a first cross-sectional characteristic and a second set of fibres having a second cross-sectional characteristic, said first cross-sectional characteristic being different to said second cross-sectional characteristic which includes the improvement of forming said blend by forming a tow of viscose rayon fibres having the same blend ratio of first and second sets of fibres as is required in the tampon by spinning viscose dope through jet means (7) to form a plurality of filaments (9), the jet means having a plurality of dimensionally controlled holes pierced therein. In this way a plurality of different fibre cross-sectional shapes or sizes are simultaneously formed directly in a tow (10A) by spinning the viscose dope through the jet means having the required plurality of different shaped or sized holes pierced therein.
    • 一种用于生产由再生固体纤维素粘胶纤维的共混物形成的止血塞(32)的方法,所述共混物包括具有第一横截面特征的第一组纤维和具有第二横截面特征的第二组纤维 所述第一横截面特征与所述第二截面特性不同,包括改进形成所述共混物,通过形成具有与棉塞中所需的第一和第二组纤维相同的混合比例的粘胶人造纤维丝束 通过通过喷射装置(7)纺丝粘胶剂以形成多根长丝(9),该喷射装置具有在其中刺穿的多个尺寸控制的孔。 以这种方式,多个不同的纤维横截面形状或尺寸通过使具有所需的多个不同形状或尺寸的孔在其中穿透的喷射装置纺丝而在丝束(10A)中直接同时形成。