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    • 43. 发明授权
    • Methods and compositions for the generation of peracetic acid on site at the point-of-use
    • 在使用时在现场产生过乙酸的方法和组合物
    • US08546449B2
    • 2013-10-01
    • US13065553
    • 2011-03-24
    • Michael S. HarveyJonathan N. Howarth
    • Michael S. HarveyJonathan N. Howarth
    • A61K31/19
    • A01N37/16A01N37/12A01N59/00B01J19/24B01J2219/24C11D3/3947C11D3/3955C11D3/3956C11D11/0041D06L4/15A01N37/02A01N2300/00
    • Methods and compositions for the generation of a peroxyacetic acid sanitizer in proximity to the point-of-use are disclosed. These methods comprise introducing a hydrogen peroxide-acetyl precursor solution to water, mixing, and then adding an aqueous source of a alkali metal or earth alkali metal hydroxide. Triacetin is a preferred acetyl precursor and is converted rapidly and with a high conversion rate into peracetic acid. These methods produce solutions with a high level of peracetic acid. Methods for preparing the hydrogen peroxide-acetyl precursor solution are also provided. Also disclosed are solid compositions comprising a liquid acetyl precursor, a water-soluble source of hydrogen peroxide, and a water-soluble source of alkalinity. The solid composition is a freely-flowable solid that is used as a bleaching agent and a stain remover for the treatment of articles such as fabrics, dentures, textile garments, and equipment used in the food and beverage industry.
    • 公开了在使用点附近产生过氧乙酸消毒剂的方法和组合物。 这些方法包括将过氧化氢 - 乙酰基前体溶液引入水中,混合,然后加入碱金属或碱土金属氢氧化物的水源。 三醋精是优选的乙酰基前体,并迅速转化并以高转化率转化成过乙酸。 这些方法产生具有高水平过乙酸的溶液。 还提供了制备过氧化氢 - 乙酰前体溶液的方法。 还公开了固体组合物,其包含液体乙酰基前体,水溶性过氧化氢源和水溶性碱度源。 固体组合物是可自由流动的固体,其用作漂白剂和用于处理食品和饮料工业中使用的织物,假牙,纺织品衣服和设备的制品的去污剂。
    • 46. 发明授权
    • Compacted forms of halogenated hydantoins
    • 压缩形式的卤代乙内酰脲
    • US06965035B1
    • 2005-11-15
    • US10202954
    • 2002-07-25
    • Jonathan N. HowarthBruce C. Peters
    • Jonathan N. HowarthBruce C. Peters
    • A01N25/12A01N43/50C07D233/86
    • A01N25/12Y02P20/582A01N59/00A01N43/50
    • This invention provides a method of producing granules. This method comprises roll compaction of a 1,3-dihalo-5,5-dimethylhydantoin/binder blend, followed by feeding the compacted product obtained from the roll compactor into a mechanical device, where the compacted product is broken into granules. The blend comprises (i) at least one powdery or finely-divided 1,3-dihalo-5,5-dialkylhydantoin in which each halogen atom is either chlorine or bromine, in which one of the alkyl groups in the 5-position is a methyl group, in which the other alkyl group in the 5-position has in the range of 1 to 4 carbon atoms, and in which the particle size is larger than about 20 microns, and (ii) a binder quantity of a micronized synthetic polyolefin-based hydrocarbon wax. The binder quantity of wax is in the range of about 0.5 to about 2 wt %, based on the total weight of the 1,3-dihalo-5,5-dialkylhydantoin and the wax. The granules are produced at an increased granulation productivity in comparison to granules of the same 1,3-dihalo-5,5-dialkylhydantoin produced without a binder.
    • 本发明提供一种生产颗粒的方法。 该方法包括1,3-二卤代-5,5-二甲基乙内酰脲/粘合剂混合物的辊压,然后将从辊压机获得的压实产物进料到机械装置中,其中压实产物被破碎成颗粒。 共混物包含(i)至少一种粉末状或细分散的1,3-二卤代-5,5-二烷基乙内酰脲,其中每个卤素原子为氯或溴,其中5-位中的一个烷基为 甲基,其中5位中的另一个烷基具有1至4个碳原子的范围,并且其中粒径大于约20微米,和(ii)微粉化合成聚烯烃的粘合剂量 的烃蜡。 基于1,3-二卤代-5,5-二烷基乙内酰脲和蜡的总重量,蜡的粘合剂量在约0.5至约2重量%的范围内。 与不含粘合剂的相同的1,3-二卤代-5,5-二烷基乙内酰脲的颗粒相比,颗粒以更高的造粒生产率生产。