Process for making polyvinylpyrrolidone polymer having predetermined
characteristics
    2.
    发明授权
    Process for making polyvinylpyrrolidone polymer having predetermined characteristics 失效
    制备具有预定特性的聚乙烯吡咯烷酮聚合物的方法

    公开(公告)号:US5362815A

    公开(公告)日:1994-11-08

    申请号:US54576

    申请日:1993-04-26

    IPC分类号: C08F2/04 C08F126/10

    CPC分类号: C08F126/10

    摘要: A process for making a solution of PVP K-90 polymer having a weight average molecular weight, Mw, of about 630,000 to 750,000 and a molecular weight distribution, Mw/Mn, where Mn is the number average molecular weight of the polymer, of 5 or less, which comprises free radical polymerizing about 5-30% by weight vinylpyrrolidone, preferably 10-20%, at about 40.degree.-100.degree. C., preferably 60.degree.-75.degree. C., in an aqueous-alcohol solvent selected from the group consisting of about (a) 5% isopropanol-95% water, (b) 10% ethanol-90% water and (c) 20% methanol-80% water.

    摘要翻译: 制备重均分子量Mw约为63万至750000的PVP K-90聚合物和Mn为聚合物数均分子量的分子量分布Mw / Mn的溶液的方法为5 包括在约40-30℃,优选60-75℃下,在含水醇溶剂中自由基聚合约5-30重量%乙烯基吡咯烷酮,优选10-20%,优选选自 由(a)5%异丙醇-95%水,(b)10%乙醇-90%水和(c)20%甲醇-80%水组成的组。

    Process for preparing functional copolymers of a vinyl lactam and an
amino alkene or hydroxy alkene in water solution
    3.
    发明授权
    Process for preparing functional copolymers of a vinyl lactam and an amino alkene or hydroxy alkene in water solution 失效
    制备乙烯基内酰胺和氨基烯烃或羟基烯烃在水溶液中的功能性共聚物的方法

    公开(公告)号:US5194546A

    公开(公告)日:1993-03-16

    申请号:US879411

    申请日:1992-05-06

    IPC分类号: C08F8/00 C08F226/06

    摘要: What is provided herein are copolymers of a vinyl lactam and a hydroxy or amino alkene monomers, which contain a hydroxy or amino functionality therein. These copolymers are prepared by reaction between a vinyl lactam, e.g. vinylpyrrolidone (VP) or vinyl caprolactam (VCL), a functional polymerizable monomer, e.g. .omega.-amino-1-alkene (AA) or .omega.-hydroxy-1-alkene (HA), in water solution in the presence of a free radical initiator under predetermined reaction conditions.

    摘要翻译: 本文提供的是乙烯基内酰胺和羟基或氨基烯烃单体的共聚物,其中含有羟基或氨基官能团。 这些共聚物通过乙烯基内酰胺,例如 乙烯基吡咯烷酮(VP)或乙烯基己内酰胺(VCL),功能可聚合单体 ω-氨基-1-烯烃(AA)或ω-羟基-1-烯烃(HA)在水溶液中,在自由基引发剂存在下,在预定的反应条件下进行。

    Method of making crosslinked PVP
    4.
    发明授权
    Method of making crosslinked PVP 失效
    制备交联PVP的方法

    公开(公告)号:US5362830A

    公开(公告)日:1994-11-08

    申请号:US122834

    申请日:1993-09-15

    摘要: Crosslinkable copolymers of (a) 80-99% by wt. vinylpyrrolidone (VP) and 1-20% by wt. of a tertiary-amine-containing polymerizable monomer, e.g. vinylimidazole (VI) or 4-vinylpyridine (VPy), and (b) 80-99% by wt. VP and 1-20% by wt. of an epoxide-containing polymerizable monomer, e.g. allyl glycidyl ether (AGE) or glycidyl acrylate (GA), are reacted in solution, e.g. water, alcohol, or mixtures thereof, at a predetermined temperature, e.g. 50.degree.-70.degree. C., in a wt. ratio (solids basis) of (a):(b) of about 2:1 to 1:2, preferably about 1:1, in a solution concentration of about 10-30% of each, to provide a crosslinked PVP product, in gel form, suitable for use as an electrolead on a conductive foilbacking, or for bandages and wound dressings, and as a controlled release media for pharmaceuticals.

    摘要翻译: (a)80-99重量%的可交联共聚物 乙烯基吡咯烷酮(VP)和1-20重量% 的含叔胺的可聚合单体,例如。 乙烯基咪唑(VI)或4-乙烯基吡啶(VPy),和(b)80-99重量% VP和1-20重量% 的含环氧化物的可聚合单体,例如 烯丙基缩水甘油醚(AGE)或丙烯酸缩水甘油酯(GA)在溶液中反应。 水,醇或其混合物,例如在预定温度下。 50℃-70℃, (a):(b)的比例(固体基准)为约2:1至1:2,优选约1:1,溶液浓度为约10-30%,以提供交联的PVP产物, 凝胶形式,适合用作导电箔片上的电泳,或用于绷带和伤口敷料,以及用作药物的控释介质。

    Method of making crosslinked PVP
    5.
    发明授权
    Method of making crosslinked PVP 失效
    制备交联PVP的方法

    公开(公告)号:US5283305A

    公开(公告)日:1994-02-01

    申请号:US966489

    申请日:1992-10-26

    摘要: Crosslinkable copolymers of (a) 80-99% by wt. vinylpyrrolidone (VP) and 1-20% by wt. of a tertiary-amine-containing polymerizable monomer, e.g. vinylimidazole (VI) or 4-vinylpyridine (VPy), and (b) 80-99% by wt. VP and 1-20% by wt. of an epoxide-containing polymerizable monomer, e.g. allyl glycidyl ether (AGE) or glycidyl acrylate (GA), are reacted in solution, e.g. water, alcohol, or mixtures thereof, at a predetermined temperature, e.g. 50.degree.-70.degree. C., in a wt. ratio (solids basis) of (a):(b) of about 2:1 to 1:2, preferably about 1:1, in a solution concentration of about 10-30% of each, to provide a crosslinked PVP product, in gel form, suitable for use as an electrolead on a conductive foilbacking, or for bandages and wound dressings, and as a controlled release media for pharmaceuticals.

    摘要翻译: (a)80-99重量%的可交联共聚物 乙烯基吡咯烷酮(VP)和1-20重量% 的含叔胺的可聚合单体,例如。 乙烯基咪唑(VI)或4-乙烯基吡啶(VPy),和(b)80-99重量% VP和1-20重量% 的含环氧化物的可聚合单体,例如 烯丙基缩水甘油醚(AGE)或丙烯酸缩水甘油酯(GA)在溶液中反应。 水,醇或其混合物,例如在预定温度下。 50摄氏度-70摄氏度。 (a):(b)的比例(固体基准)为约2:1至1:2,优选约1:1,溶液浓度为约10-30%,以提供交联的PVP产物, 凝胶形式,适合用作导电箔片上的电泳,或用于绷带和伤口敷料,以及用作药物的控释介质。

    Method of crosslinking PVP
    6.
    发明授权
    Method of crosslinking PVP 失效
    交联PVP的方法

    公开(公告)号:US5219950A

    公开(公告)日:1993-06-15

    申请号:US945565

    申请日:1992-09-16

    IPC分类号: C08F8/00

    CPC分类号: C08F8/00

    摘要: The method of crosslinking polyvinylpyrrolidone (PVP) which comprises: copolymerizing vinyl pyrrolidone (VP) and an aminoalkene, a hydroxyalkene, or an aminoalkyl acrylamide or methacrylamide, to provide a crosslinkable, functional PVP copolymer as a starting material; then (a) condensing predetermined amounts of the starting material and a haloacetal under basic conditions to form a stable, crosslinkable PVP copolymer intermediate containing an acetal group as a functional appendant on the PVP polymer backbone; (b) acidifying the basic solution to hydrolyze the acetal group to an aldehyde group, and (c) crosslinking the aldehyde-functional PVP copolymer with the amine group of the amine-functional PVP copolymer, present on the polymer as free amine after step (a), or as added amine-functional copolymer to the reaction mixture, under basic conditions.

    摘要翻译: 交联聚乙烯吡咯烷酮(PVP)的方法,其包括:使乙烯基吡咯烷酮(VP)和氨基链烯烃,羟基亚烷基或氨基烷基丙烯酰胺或甲基丙烯酰胺共聚,得到可交联的官能化PVP共聚物作为原料; 然后(a)在碱性条件下冷凝预定量的原料和卤代缩醛,以形成在PVP聚合物主链上含有缩醛基作为官能基的稳定的可交联PVP共聚物中间体; (b)将碱性溶液酸化以将缩醛基水解成醛基,和(c)将醛官能的PVP共聚物与胺官能化PVP共聚物的胺基交联,作为游离胺在步骤之后存在于聚合物上 a)或作为添加的胺官能共聚物在反应混合物中。

    Process of crosslinking PVP
    8.
    发明授权
    Process of crosslinking PVP 失效
    交联PVP的方法

    公开(公告)号:US5236993A

    公开(公告)日:1993-08-17

    申请号:US945453

    申请日:1992-09-16

    IPC分类号: C08F8/00 C08F8/08 C08F8/32

    摘要: A method of crosslinking polyvinylpyrrolidone (PVP) at a predetermined pH which comprises (a) providing a tertiary amino-functional PVP as a starting material, (b) condensing said starting material with a predetermined amount of epichlorohydrin to form an epichlorohydrin-functional PVP copolymer, and, if less than an equivalent of epichlorohydrin in use, unreacted starting material, (c) acidifying the resultant copolymer to form a solution of a storage stable glycidyl quat intermediate, and (d) increasing the pH of the solution to above 7 to convert the glycidyl quat into a glycidyl epoxide, and (e) crosslinking the glycidyl epoxide with free amine group on the copolymer or as added amine functional PVP copolymer to form a crosslinked PVP polymer.

    摘要翻译: 一种在预定pH下交联聚乙烯吡咯烷酮(PVP)的方法,其包括(a)提供叔氨基官能的PVP作为原料,(b)将所述原料与预定量的表氯醇缩合以形成表氯醇官能的PVP共聚物 ,如果在使用中少于当量的表氯醇,未反应的原料,(c)酸化所得共聚物以形成储存稳定的缩水甘油基季铵盐中间体的溶液,和(d)将溶液的pH提高至7以上 将缩水甘油基季铵转化为缩水甘油基环氧化物,和(e)在共聚物上或作为加成的胺官能化PVP共聚物使游离胺基交联缩水甘油基环氧化物以形成交联的PVP聚合物。

    Strongly swellable, moderately crosslinked polyvinylpyrrolidone
    10.
    发明授权
    Strongly swellable, moderately crosslinked polyvinylpyrrolidone 失效
    强溶胀性,适度交联的聚乙烯吡咯烷酮

    公开(公告)号:US5073614A

    公开(公告)日:1991-12-17

    申请号:US599592

    申请日:1990-10-18

    CPC分类号: C08F226/10

    摘要: What is provided herein are strongly swellable, moderately crosslinked polyvinylpyrrolidone polymers in the form of fine, white powders characterized by (a) an aqueous swelling parameter defined by its gel volume of about 15 to 150 ml/g, (b) a Brookfield viscosity in 5% aqueous solution of at least about 10,000 cps, and (c) being prepared directly by a precipitation polymerization process in an organic solvent, in the presence of about 0.2 to 1% by weight of vinylpyrrolidone of a multifunctional crosslinking agent, preferably about 0.25 to 0.6%, and optimally, about 0.35 to 0.6%.

    摘要翻译: 本文提供的是可膨胀的中等交联的聚乙烯吡咯烷酮聚合物,其为细的白色粉末形式,其特征在于(a)由其凝胶体积约15至150ml / g定义的水溶胀参数,(b) 5%的至少约10,000cps的水溶液,和(c)通过沉淀聚合法在有机溶剂中,在约0.2至1重量%的多官能交联剂的乙烯基吡咯烷酮存在下,优选约0.25 至0.6%,最佳为约0.35至0.6%。