Xanthine derivatives
    12.
    发明授权
    Xanthine derivatives 失效
    黄嘌呤衍生物

    公开(公告)号:US5756735A

    公开(公告)日:1998-05-26

    申请号:US483159

    申请日:1995-06-07

    IPC分类号: C07D473/06

    CPC分类号: C07D473/06

    摘要: The present invention relates to novel xanthine derivatives of the formula (I) which are selectively antagonistic to an adenosine A.sub.2 receptor, and pharmaceutically acceptable salts thereof. Formula (I): ##STR1## In the formula, R.sup.1 and R.sup.2 are the same or different and each represents a hydrogen atom, a propyl group, a butyl group or an allyl group; R.sup.3 represents a hydrogen atom or a lower alkyl group; Y.sup.1 and Y.sup.2 are the same or different and each represents a hydrogen atom or a methyl group; and Z represents a substituted or unsubstituted phenyl group, a pyridyl group, an imidazolyl group, a furyl group or a thienyl group.

    摘要翻译: 本发明涉及对腺苷A2受体选择性拮抗的式(I)的新颖黄嘌呤衍生物及其药学上可接受的盐。 式(I):(I)式中,R 1和R 2相同或不同,表示氢原子,丙基,丁基或烯丙基; R3表示氢原子或低级烷基; Y1和Y2相同或不同,各自表示氢原子或甲基; Z表示取代或未取代的苯基,吡啶基,咪唑基,呋喃基或噻吩基。

    Process for producing thermoplastic copolymer powder
    14.
    发明授权
    Process for producing thermoplastic copolymer powder 失效
    生产热塑性共聚物粉末的方法

    公开(公告)号:US5521231A

    公开(公告)日:1996-05-28

    申请号:US381888

    申请日:1995-02-24

    摘要: A process for producing a thermoplastic polymer powder which comprises adding a polymer (B) and/or an inorganic compound (C) to a coagulation slurry or a powder of a thermoplastic polymer (A) obtained from emulsion polymerization and having a glass transition temperature Tg defined by the following equation (1), in an amount of 0.1-10 parts by weight to 100 parts by weight of the thermoplastic polymer (A), compacting the thermoplastic polymer (A) at a temperature in a range of (Tg-30) to (Tg+50).degree. C., and comminuting it:Tg=W.sub.1 .times.Tg.sub.1 +W.sub.2 .times.Tg.sub.2 + . . . +W.sub.n .times.Tg.sub.n ( 1)wherein n is the number of the monomers forming the thermoplastic polymer (A); W.sub.1, W.sub.2, . . . W.sub.n each represents weight fraction of each monomer i (i=1, 2, . . . n) in the polymer (A); and Tg.sub.1, Tg.sub.2, . . . Tg.sub.n each represents the glass transition temperature of the polymer composed of each monomer i. According to the present invention, it is possible to remarkably enhance bulk specific gravity of thermoplastic polymers as compared with the case using the methods known in the art.

    摘要翻译: PCT No.PCT / JP93 / 01221 Sec。 371日期:1995年2月24日 102(e)1995年2月24日PCT PCT 1993年8月31日PCT公布。 出版物WO94 / 05722 日本特开2002-1933年所述的热塑性聚合物粉末的制造方法,其特征在于,将聚合物(B)和/或无机化合物(C)添加到由乳液聚合得到的凝固浆料或热塑性聚合物(A)的粉末中 并且具有由下式(1)定义的玻璃化转变温度Tg,相对于100重量份热塑性聚合物(A)为0.1-10重量份,在热塑性聚合物(A)的温度下压制热塑性聚合物 (Tg-30)至(Tg + 50)℃的范围,并粉碎:Tg = W1xTg1 + W2xTg2 +。 。 。 + WnxTgn(1)其中n是形成热塑性聚合物(A)的单体数目; W1,W2,。 。 。 Wn分别表示聚合物(A)中各单体i(i = 1,2,...)的重量分数。 和Tg1,Tg2。 。 。 Tgn各自表示由各单体i构成的聚合物的玻璃化转变温度。 根据本发明,与使用本领域已知方法的情况相比,可以显着提高热塑性聚合物的体积比重。

    Optical fiber coupler manufacturing device
    18.
    发明授权
    Optical fiber coupler manufacturing device 失效
    光纤耦合器制造装置

    公开(公告)号:US5030265A

    公开(公告)日:1991-07-09

    申请号:US516500

    申请日:1990-05-01

    IPC分类号: G02B6/28

    CPC分类号: G02B6/2835

    摘要: A optical fiber coupler manufacturing device is disclosed for the manufacture of fused-elongated type optical fiber couplers. The disclosed invention provides an optical fiber coupler manufacturing device having a chassis, a pair of movable stands provided within the chassis forming a space therebetween, optical fiber mounting units for mounting and fixing two or more component optical fibers on the above mentioned pair of movable stands, and a drive mechanism whereby the pair of movable stands can be driven back and forth in a direction parallel to the longitudinal axes of the component optical fibers. By virtue of the space formed between the two movable stands, a heat source can be applied to the aligned portions of the component optical fibers, thereby effecting thermal fusing of the aligned portions, after which drawing out of the thus fused section can be effected using the above mentioned drive mechanism for the movable stands, and additionally, a protective case for surrounding and reinforcing the manufactured optical fiber coupler can easily be applied without removing the optical fiber coupler from the apparatus through the above described space.

    Imidazoquinolone derivatives
    19.
    发明授权
    Imidazoquinolone derivatives 失效
    咪唑喹啉酮衍生物

    公开(公告)号:US4994468A

    公开(公告)日:1991-02-19

    申请号:US489025

    申请日:1990-03-05

    IPC分类号: C07D471/04

    CPC分类号: C07D471/04

    摘要: Novel imidazoquinolone derivative represented by the formula (I); ##STR1## wherein R.sup.1 represents hydrogen, alkyl, cycloalkyl, alkenyl aralkyl, aralkenyl or substituted or unsubstituted aryl; X represents nitrogen or ##STR2## where R.sup.2 is hydrogen, hydroxyl, alkyl, cycloalkyl, alkenyl, aralkyl, aralkenyl, substituted or unsubstituted aryl, thiol, halogen, substituted or unsubstituted aromatic heterocyclic group, or --(CH.sub.2).sub.m CO.sub.2 R.sup.6 where R.sup.6 is hydrogen or lower alkyl and m is an integer of 0 to 3; Y represents oxygen or sulfur; R.sup.3 represents alkyl, cycloalkyl, alkoxyalkly, alkenyl, aralkyl, aralkenyl, --(CH.sub.2).sub.n -- Het where Het is substituted or unsubstituted aromatic heterocyclic group and n is an integer of 1 to 3 or --(CH.sub.2).sub.n CO.sub.2 R.sup.6a where n has the same meaning as defined above and R.sup.6a has the same meaning as defined as to R.sup.6 ; each of R.sup.4 and R.sup.5 independently represents hydrogen, lower alkyl, trifluoromethyl, cycloalkyl, halogen, hydroxyl, lower alkoxyl, lower alkylthio, nitro, amino, lower alkylamino, lower alkanoylamino, aroylamino, lower alkanoyl or aroyl; and a pharmaceutically acceptable salt thereof. The Compound (I) and a pharmaceutically acceptable salt thereof show bronchodilatory and antiallergic activities, and are useful for treating respiratory disorders such as bronchial asthma.