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
    • 44. 发明授权
    • Inorganic-polymer-derived dielectric films
    • 无机聚合物衍生的介电膜
    • US4652467A
    • 1987-03-24
    • US704697
    • 1985-02-25
    • C. Jeffrey BrinkerKeith D. KeeferPatrick M. Lenahan
    • C. Jeffrey BrinkerKeith D. KeeferPatrick M. Lenahan
    • B05D5/12C08G79/00C09D4/00H01B3/30H01L21/312B05D5/06B05D7/24
    • B05D5/12C08G79/00C09D4/00H01B3/30H01L21/3121
    • A method of coating a substrate with a thin film of a polymer of predetermined porosity comprises depositing the thin film on the substrate from a non-gelled solution comprising at least one hydrolyzable metal alkoxide of a polymeric network forming cation, water, an alcohol compatible with the hydrolysis and the polymerization of the metal alkoxide, and an acid or a base, prior to depositing the film, controlling the structure of the polymer for a given composition of the solution exclusive of the acid or base component and the water component, (a) by adjusting each of the water content, the pH, and the temperature to obtain the desired concentration of alkoxide, and then adjusting the time of standing of the solution prior to lowering the temperature of the solution, and (b) lowering the temperature of the solution after the time of standing to about 15 degrees C. or lower to trap the solution in a state in which, after the depositing step, a coating of the desired porosity will be obtained, and curing the deposited film at a temperature effective for curing whereby there is obtained a thin film of a polymer of a predetermined porosity and corresponding pore size on the substrate.
    • 用预定孔隙率的聚合物的薄膜涂覆基材的方法包括从包含至少一种形成阳离子的聚合物网络的水解性金属醇盐的非胶凝溶液沉积薄膜,水,与 在沉积膜之前金属醇盐和酸或碱的水解和聚合控制聚合物的结构,用于给定不含酸或碱组分和水组分的溶液的组合物(a ),通过调节每个水含量,pH和温度以获得所需的醇盐浓度,然后在降低溶液温度之前调节溶液的静置时间,和(b)降低溶液的温度 该溶液在静置至约15℃或更低时将该溶液捕获到其中在沉积步骤之后,所需孔隙率的涂层将为o 获得并在有效固化的温度下固化沉积的膜,从而获得在基材上具有预定孔隙率和相应孔径的聚合物的薄膜。
    • 49. 发明授权
    • Sol-gel method for encapsulating molecules
    • 用于封装分子的溶胶 - 凝胶法
    • US06495352B1
    • 2002-12-17
    • US09548638
    • 2000-04-13
    • C. Jeffrey BrinkerCarol S. AshleyRimple BhatiaAnup K. Singh
    • C. Jeffrey BrinkerCarol S. AshleyRimple BhatiaAnup K. Singh
    • C12N1114
    • C12N11/14Y10S436/815Y10S436/829
    • A method for encapsulating organic molecules, and in particular, biomolecules using sol-gel chemistry. A silica sol is prepared from an aqueous alkali metal silicate solution, such as a mixture of silicon dioxide and sodium or potassium oxide in water. The pH is adjusted to a suitably low value to stabilize the sol by minimizing the rate of siloxane condensation, thereby allowing storage stability of the sol prior to gelation. The organic molecules, generally in solution, is then added with the organic molecules being encapsulated in the sol matrix. After aging, either a thin film can be prepared or a gel can be formed with the encapsulated molecules. Depending upon the acid used, pH, and other processing conditions, the gelation time can be from one minute up to several days. In the method of the present invention, no alcohols are generated as by-products during the sol-gel and encapsulation steps. The organic molecules can be added at any desired pH value, where the pH value is generally chosen to achieve the desired reactivity of the organic molecules. The method of the present invention thereby presents a sufficiently mild encapsulation method to retain a significant portion of the activity of the biomolecules, compared with the activity of the biomolecules in free solution.
    • 一种封装有机分子的方法,特别是使用溶胶 - 凝胶化学的生物分子。 二氧化硅溶胶由碱金属硅酸盐水溶液如二氧化硅和氧化钠在水中的混合物制备。 通过使硅氧烷缩合的速度最小化,将pH调节到适当的低值以稳定溶胶,由此允许在凝胶化之前溶胶的储存稳定性。 然后通常在溶液中的有机分子加入被包封在溶胶基质中的有机分子。 老化后,可以制备薄膜或用封装的分子形成凝胶。 根据使用的酸,pH和其他加工条件,凝胶化时间可以从一分钟到几天。 在本发明的方法中,在溶胶 - 凝胶和包封步骤期间不产生作为副产物的醇。 有机分子可以以任何所需的pH值加入,其中通常选择pH值以实现有机分子的所需反应性。 因此,与游离溶液中的生物分子的活性相比,本发明的方法提供了足够温和的包封方法以保持生物分子的活性的显着部分。