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    • 4. 发明授权
    • Polymodal-cure silicone composition, and method of making the same
    • 多聚固化硅酮组合物及其制备方法
    • US5212211A
    • 1993-05-18
    • US615185
    • 1990-11-19
    • Edward K. Welch, IIRobert P. CrossDavid I. CrossanHsien-Kun Chu
    • Edward K. Welch, IIRobert P. CrossDavid I. CrossanHsien-Kun Chu
    • C08F2/50C08G77/50C08L83/14C09D183/14C09K3/10
    • C08G77/50C08L83/14C09D183/14C09K3/1018C09K2003/1062C09K2200/0247C09K2200/0625
    • An acryloxy-functional capped silicone formed as a reaction product of:(i) a silyl diacrylate compound of the formula ##STR1## wherein: R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, and R.sub.10 are independently selected from hydrogen, halo, and organo radicals; and n is an integer having a value of from 1 to 4; and(ii) a silicone having (A) functionality which is reactive with an acryloxy functionality of the silyl diacrylate compound, and (B) additional functionality imparting (directly or by reaction with a co-reactant) further curability to the silicone by another modality (e.g., moisture curability, heat curability, etc.)The capped polyfunctional silicone may suitably be formulated with (a) an effective amount of a photoinitiator for partial curing of the acryloxy-functional capped silicone under photoinitiating curing conditions, and (b) suitable curatives, initiators, accelerators, etc., as necessary or desirable for further curing by other cure mechanisms dissociated with the additional functionality (ii) (B). The compositions of the invention are usefully employed as adhesives, sealants, conformal coatings, potting materials, and the like.
    • 形成为以下物质的反应产物的丙烯酰氧基官能的封端硅氧烷:(i)下式的化合物:其中:R1,R2,R3,R4,R5,R6,R7,R8,R9和R10独立地为 选自氢,卤素和有机基团; n为1〜4的整数, 和(ii)具有(A)与甲硅烷基二丙烯酸酯化合物的丙烯酰氧基官能团反应的官能团的硅氧烷,和(B)赋予(直接或通过与共反应物反应)的另外的官能团通过另一种模态对硅氧烷进一步固化 (例如,湿度固化性,热固化性等)。封端的多官能硅氧烷可以适当地配制为(a)有效量的光引发剂,用于在光引发固化条件下部分固化丙烯酰氧基官能的封端硅氧烷,和(b)合适的 固化剂,引发剂,促进剂等,如用另外的官能度(ⅱ)(B)解离的其它固化机理进一步固化所必需或期望的。 本发明的组合物有用地用作粘合剂,密封剂,保形涂料,灌封材料等。
    • 7. 发明授权
    • Encapsulated inorganic antimicrobial additive for controlled release
    • 封装的无机抗菌添加剂用于控释
    • US07357949B2
    • 2008-04-15
    • US10032372
    • 2001-12-21
    • Jeffrey A. TrogoloFrank C. RossittoEdward K. Welch, II
    • Jeffrey A. TrogoloFrank C. RossittoEdward K. Welch, II
    • A61K33/24A61K47/30A01N59/16
    • C08K9/10A01N25/26A01N59/16C08K9/08A01N25/34A01N25/10A01N2300/00
    • The invention relates to a microcapsule comprising an inorganic antimicrobial agent coated with a hydrophilic polymer. The hydrophilic polymer is able to absorb sufficient water as to enable the action of the encapsulated antimicrobial agent. These microcapsules are useful to impart antimicrobial activity and can be used in polymer compositions, sprays and coatings. A method of preparing the microcapsule by treatment of the antimicrobial agent with a solution of the hydrophilic polymer is provided. Another embodiment of the invention is a method of preparing the microcapsule by coating of the antimicrobial agent with a polymer precursor followed by treatment with a reactive ingredient. Another embodiment of the invention is a method of preparing the microcapsule by melt compounding the antimicrobial agent with the hydrophilic polymer followed by grinding to the desired particle size. Polymer compositions comprising the microcapsules and a matrix polymer are also provided. Another embodiment of the invention is an article prepared from the polymer compositions comprising the microcapsules and a matrix polymer.
    • 本发明涉及包含用亲水性聚合物涂覆的无机抗微生物剂的微胶囊。 亲水性聚合物能够吸收足够的水以使得能够包封的抗微生物剂的作用。 这些微胶囊可用于赋予抗微生物活性,并可用于聚合物组合物,喷雾剂和涂料。 提供了通过用亲水性聚合物溶液处理抗微生物剂来制备微胶囊的方法。 本发明的另一个实施方案是通过用聚合物前体涂覆抗微生物剂然后用活性成分处理来制备微胶囊的方法。 本发明的另一个实施方案是通过将抗微生物剂与亲水性聚合物熔融混合,然后研磨成所需的粒度来制备微胶囊的方法。 还提供了包含微胶囊和基质聚合物的聚合物组合物。 本发明的另一个实施方案是由包含微胶囊和基质聚合物的聚合物组合物制备的制品。