For In-place Cleaning Of Stationary Apparatus Patents (Class 510/234)
  • Patent number: 5575993
    Abstract: Ionene polymers having biologically-active organic and/or inorganic anions are described. Methods to prepare the ionene polymers, compositions containing them and their methods of use are also described.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: November 19, 1996
    Assignee: Buckman Laboratories International, Inc.
    Inventors: James A. Ward, Fernando Del Corral
  • Patent number: 5571446
    Abstract: A two-part enzyme-based cleaning system useful in clean-in-place operations to remove proteinaceous soils from dairy equipment is described. The system comprises two liquid concentrates stored in separate containers, the concentrates being diluted and mixed for use.A. The first concentrate consists of:i) 2.5 to 7.5 percent by weight of a source of alkalinity selected from the sources of hydroxide based alkaline composition;ii) 1 to 16 percent by weight of a water conditioner selected from the group consisting of polyacrylic acids and polyphosphates; andiii) balance water.B. The second concentrate consists of:i) 35 to 45 percent by weight of a blend of an alkali salt of a (C.sub.6 to C.sub.12) fatty acid and a linear (C.sub.8 -C.sub.18) polyoxyalkylene;ii) 0.2 to 1.6 percent of a proteolytic enzyme; andiii) balance water.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: November 5, 1996
    Assignee: Diversey Corporation
    Inventor: Carol A. Rouillard
  • Patent number: 5567444
    Abstract: A cleaning and sanitizing method for soiled solid surfaces, especially clean-in-place process facilities, is described which involves contacting the surfaces first with an aqueous ozone cleaning composition having a pH greater than 7, wherein the ozone is generated by electrical discharge, then quenching the excess ozone and simultaneously sanitizing the surfaces by contact with an aqueous composition containing hydrogen peroxide, a C.sub.1 -C.sub.10 peroxyaliphatic carboxylic acid or a mixture thereof.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: October 22, 1996
    Assignee: Ecolab Inc.
    Inventors: Robert D. Hei, Guange-jong J. Wei, Bruce R. Cords, Keith D. Lokkesmoe
  • Patent number: 5545374
    Abstract: Microbicidal compositions having activity over a broad pH range are provided. The compositions include a peracid and a nonionic surfactant according to the general chemical formula: R-(OCH.sub.2 CH.sub.2).sub.n -(OCH.sub.2 CH.sub.2 CH.sub.3).sub.p -OH, wherein R represents an alkyl group of at least 6 carbon atoms, and n and p each represent an integer. The compositions can additionally include a cationic surfactant.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: August 13, 1996
    Assignee: Solvay Interox Limited
    Inventors: Madeline S. French, Anita J. Harvey
  • Patent number: 5536884
    Abstract: A mixture suitable for use as a foam-suppressing surfactant additament in cleaning compositions for mechanized cleaning processes comprises at least two mixtures of alkoxylated alcohols IR--O--(C.sub.2 H.sub.4 O).sub.x --(C.sub.3 H.sub.6 O).sub.y --H (I)where x is an average degree of ethoxylation between 1 and 12, y is an average degree of propoxylation between 1 and 15, one alkoxylated alcohol mixture carries straight-chain or branched C.sub.8 -C.sub.18 -alkyl groups as the radical R and one other alkoxylated alcohol mixture carries straight-chain or branched C.sub.10 -C.sub.20 -alkyl groups as the radical R, subject to the proviso that the two radicals R differ by at least 0.5 in the average number of carbon atoms, and the two alkoxylated alcohol mixtures present in a ratio of from 10:90 to 90:10.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: July 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Stoeckigt, Richard Baur, Horst Trapp, Johannes Perner