Denture adhesive
    1.
    发明授权
    Denture adhesive 失效
    假牙胶

    公开(公告)号:US5147941A

    公开(公告)日:1992-09-15

    申请号:US786638

    申请日:1991-11-01

    IPC分类号: A61K6/00 C08F220/06

    CPC分类号: A61K6/0026 C08F220/06

    摘要: According to this invention, there is provided a denture adhesive which is a mixed partial salt of a copolymer of maleic anhydride and acrylic acid (or methacrylic acid), optionally including a C.sub.1 -C.sub.4 alkyl vinyl ether, having a weight average molecular weight of about 30,000 to 400,000, preferably about 50,000 to 350,000. The copolymer comprises about 10 to 70 mole percent, preferably 20 to 60 mole percent, of maleic anhydride, about 30 to 90 mole percent, preferably 40 to 80 percent, of acrylic acid (or methacrylic acid), and 0 to 25 mole percent of a C.sub.1 -C.sub.4 alkyl vinyl ether.

    摘要翻译: 根据本发明,提供了一种义齿粘合剂,其是马来酸酐和丙烯酸(或甲基丙烯酸)的共聚物的混合的部分盐,其任选地包括C 1 -C 4烷基乙烯基醚,其重均分子量为约 30,000至400,000,优选约50,000至350,000。 共聚物包含约10至70摩尔%,优选20至60摩尔%的马来酸酐,约30至90摩尔%,优选40至80重量%的丙烯酸(或甲基丙烯酸)和0至25摩尔% C1-C4烷基乙烯基醚。

    Denture adhesive
    2.
    发明授权
    Denture adhesive 失效
    假牙胶

    公开(公告)号:US5037924A

    公开(公告)日:1991-08-06

    申请号:US557356

    申请日:1990-07-25

    IPC分类号: A61K6/00 C08F222/06

    CPC分类号: A61K6/0026 C08F222/06

    摘要: According to this invention, there is provided a denture adhesive which is a mixed partial salt of a terpolymer of maleic anhydride, (MA) a C.sub.1 -C.sub.4 alkyl vinyl ether (AVE) and isobutylene (IB) vinyl ether, having a weight average molecular weight of about 30,000 to 400,000, preferably about 50,000 to 350,000. The terpolymer has its components in the molar ratio of MA:AVE:IB of about 1:0.4-0.9:0.1-0.6, preferably about 1:0.5-0.8-0.2-0.5.

    摘要翻译: 根据本发明,提供了一种义齿粘合剂,其是马来酸酐,(MA),C 1 -C 4烷基乙烯基醚(AVE)和异丁烯(IB)乙烯基醚的三元共聚物的混合部分盐,其重均分子量 重量约30,000至400,000,优选约50,000至350,000。 三元共聚物的组分摩尔比为约1:0.4-0.9:0.1-0.6,优选约1:0.5-0.8-0.2-0.5的MA:AVE:BB。

    Pharmaceutical tablet with PVP having enhanced drug dissolution rate
    3.
    发明授权
    Pharmaceutical tablet with PVP having enhanced drug dissolution rate 失效
    具有PVP的药物片剂具有增强的药物溶解速率

    公开(公告)号:US5262171A

    公开(公告)日:1993-11-16

    申请号:US796999

    申请日:1991-11-25

    摘要: A pharmaceutical tablet is provided herein having an effective dissolution rate. The tablet contains a pharmaceutically-active ingredient and a substantially linear, i.e. non-crosslinked K-30 to K-120 PVP as a binding agent. The PVP used herein is made by an initiated polymerization process in which vinyl pyrrolidone monomer is polymerized in the presence of an initiator which produces a linear PVP polymerization, i.e. is a poor hydrogen abstractor of PVP polymer backbones, which would produce a disadvantageous crosslinked PVP product. Suitable initiators include low energy peroxyester free radical initiators, such as t-amylperoxy pivalate, an azo initiator, or a redox initiator which can perform at low temperatures.Preferably the residual initiator level in the PVP is reduced to less than 500 ppm, thereby further precluding the possibility of crosslinking of the PVP polymer during the shelf-life of the tablet.

    摘要翻译: 本文提供了具有有效溶解速率的药片。 片剂含有药物活性成分和基本上线性的,即非交联的K-30至K-120 PVP作为结合剂。 本文使用的PVP通过引发聚合方法制备,其中乙烯基吡咯烷酮单体在产生线性PVP聚合的引发剂存在下聚合,即是PVP聚合物主链的不良氢提取物,其将产生不利的交联PVP产物 。 合适的引发剂包括低能过氧酯自由基引发剂,例如可在低温下进行的新戊酸叔戊基过氧化物,偶氮引发剂或氧化还原引发剂。 优选地,PVP中的残余引发剂水平降低到小于500ppm,从而进一步排除了在片剂保质期间PVP聚合物交联的可能性。

    Hair setting shampoo composition
    4.
    发明授权
    Hair setting shampoo composition 失效
    头发定型洗发水组成

    公开(公告)号:US5118498A

    公开(公告)日:1992-06-02

    申请号:US615184

    申请日:1990-11-19

    摘要: The hair setting shampoo composition of the invention comprises a resin provided by about 1-15% by weight of about a 20-50% resin active alcoholic solution of the alkyl half-ester of a C.sub.1 -C.sub.5 alkyl vinyl ether-maleic anhydride copolymer having a molecular weight of at least one million, which is about 5-90% neutralized, preferably with about 0.01-1% by weight of 2-amino-2-methyl-1-propanol, about 5-60% by weight of a surfactant, optionally 0-10% by weight of added ethanol, and about 30-90% by weight of water. The composition provides a subtle temporary set on hair of the user without the use of auxiliary fixatives in the composition.

    摘要翻译: 本发明的头发定型洗发剂组合物包含由约1-15重量%的约20-50%的C1-C5烷基乙烯基醚 - 马来酸酐共聚物的烷基半酯的20-50%树脂活性醇溶液提供的树脂,其具有 至少一百万分子量,约5-90%中和,优选约0.01-1%重量的2-氨基-2-甲基-1-丙醇,约5-60%重量的表面活性剂 ,任选地0-10重量%的加入的乙醇和约30-90重量%的水。 该组合物在使用者的头发上提供微妙的临时固定,而不需要在组合物中使用辅助固定剂。

    Process for the production of amorphous methyl vinyl ether homopolymers
having a high molecular weight and narrow molecular weight distribution
    5.
    发明授权
    Process for the production of amorphous methyl vinyl ether homopolymers having a high molecular weight and narrow molecular weight distribution 失效
    制备具有高分子量和窄分子量分布的无定形甲基乙烯基醚均聚物的方法

    公开(公告)号:US5147963A

    公开(公告)日:1992-09-15

    申请号:US422322

    申请日:1989-10-16

    IPC分类号: C08F116/18

    CPC分类号: C08F116/18

    摘要: What is described herein is a cationic polymerization process for the production of methyl vinyl ether homopolymers which have a relatively high molecular weight and a rather narrow molecular weight distribution. Polymerization is carried out under pressure of an added inert gas so the methyl vinyl ether vapor is effectively absorbed into the liquid phase during the polymerization.

    摘要翻译: 本文描述的是用于生产具有相对高的分子量和相当窄的分子量分布的甲基乙烯基醚均聚物的阳离子聚合方法。 在加入的惰性气体的压力下进行聚合,因此甲基乙烯基醚蒸气在聚合过程中被有效地吸收到液相中。

    Mousse hair composition
    6.
    发明授权
    Mousse hair composition 失效
    慕斯头发组成

    公开(公告)号:US5066481A

    公开(公告)日:1991-11-19

    申请号:US608949

    申请日:1990-11-05

    摘要: The mousse hair composition of the invention comprises a resin provided by about 3-15% by weight of about a 20-50% alcoholic solution of the half-alkyl ester of a C.sub.1 -C.sub.5 alkyl vinyl ether-maleic anhydride copolymer having a molecular weight of at least one million, which is about 5-90% neutralized, preferably with about 0.15-1.0% by weight of ammonium hydroxide, about 60-95% by weight of water, about 0.3-2.0% by weight of a surfactant, and about 0-30% by weight of added ethanol.

    摘要翻译: 本发明的摩丝发组合物包含由约3-15重量%的约20-50%的具有分子量的C 1 -C 5烷基乙烯基醚 - 马来酸酐共聚物的半烷基酯的醇溶液提供的树脂 至少一百万,约5-90%中和,优选约0.15-1.0重量%的氢氧化铵,约60-95重量%的水,约0.3-2.0重量%的表面活性剂,和 约0-30重量%的加入的乙醇。

    Slurry polymerization of maleic anhydride and acrylic acid in a
cosolvent system of ethyl acetate and cyclohexane
    7.
    发明授权
    Slurry polymerization of maleic anhydride and acrylic acid in a cosolvent system of ethyl acetate and cyclohexane 失效
    在乙酸乙酯和环己烷的共溶剂系统中马来酸酐和丙烯酸的淤浆聚合

    公开(公告)号:US5008355A

    公开(公告)日:1991-04-16

    申请号:US501059

    申请日:1990-03-29

    IPC分类号: C08F220/06 C08F222/02

    CPC分类号: C08F222/02 C08F220/06

    摘要: Slurry copolymerization of maleic anhydride with (meth)acrylic acid and, optionally, with C.sub.1 -C.sub.4 alkyl vinyl ether in a cosolvent system of cyclohexane and ethyl acetate yields a pumpable slurry, from which uniform, fine, white powders having a predetermined weight average molecular weight of about 10,000 to one million, preferably about 30,000 to 400,000, are obtained.

    摘要翻译: 马来酸酐与(甲基)丙烯酸和任选地与C 1 -C 4烷基乙烯基醚在环己烷和乙酸乙酯的共溶剂体系中的淤浆共聚产生可泵送的浆料,从其中可以得到具有预定重均分子量的均匀的细的白色粉末 重量约10,000至100万,优选约30,000至400,000。

    Polymerization process using PVP-H.sub.2 O.sub.2 as free radical
initiator
    10.
    发明授权
    Polymerization process using PVP-H.sub.2 O.sub.2 as free radical initiator 失效
    使用PVP-H2O2作为自由基引发剂的聚合方法

    公开(公告)号:US5159033A

    公开(公告)日:1992-10-27

    申请号:US820820

    申请日:1992-01-15

    CPC分类号: C08F222/06 C08F216/18

    摘要: A process is described for carrying out aqueous and non-aqueous polymerization of polymerizable monomers, particularly vinyl monomers, and, preferably, vinylpyrrolidone, in the presence of a mixture of a stable, high purity, free-flowing, fine white powder of a substantially anhydrous 1:1 molar ratio complex of polyvinylpyrrolidone-hydrogen peroxide (PVP--H.sub.2 O.sub.2), respectively, and a transition metallic ion, as a free radical initiator, is described herein. Preferred polymerizations are the homopolymerization of vinylpyrrolidone and the copolymerization of maleic anhydride and a C.sub.1 -C.sub.5 alkyl vinyl ether.

    摘要翻译: 描述了一种方法,用于在稳定的,高纯度的自由流动的细白色粉末的混合物的存在下进行可聚合单体,特别是乙烯基单体,优选乙烯基吡咯烷酮的水性和非水性聚合,所述混合物基本上 本文描述了分别为聚乙烯吡咯烷酮 - 过氧化氢(PVP-H 2 O 2)的无水1:1摩尔比络合物和作为自由基引发剂的过渡金属离子。 优选的聚合是乙烯基吡咯烷酮的均聚和马来酸酐与C1-C5烷基乙烯基醚的共聚合。