Abstract:
A method is provided for controlling organic contaminants, such as xylans, pitch or both, that interfere with bleaching of fibers and/or cause other interference(s) in papermaking systems. The method includes contacting fibers before any bleaching thereof with a composition which contains a hemicellulolytic enzyme and an organic contaminant removal adjuvant to liberate the organic contaminants from the fibers. The treated fibers can then be bleached and further used, for example, in making paper. The present invention also relates to the treatment compositions and to paper products made with fiber materials treated with these compositions. A method of enhancing enzymatic degradation of a substrate as well as formulations and systems for achieving the same are also provided. Various substrates can be degraded or otherwise processed, including biomass, paper mill sludge, and animal hides. Enzymatic degradation can be enhanced by including one or more polymeric surfactants.
Abstract:
Microbicidal compositions including (a) cyanodithiocarbimate and (b) an N-alkyl heterocyclic compound; a triazole compound or salt thereof or metal complex thereof; a microbicide with an activated halogen atom or a formaldehyde releasing compound; 1,4-bis(bromoacetoxy)-2-butene; 2-(thiocyanomethylthio)benzothiazole; a methylene-bis(thiocyanate); a halogenated acetophenone; a halopropynl compound; an iodosulfone; a phenol; a halocyanoacetamide compound and/or a quaternary ammonium compound are described. Components (a) and (b) can be present in a synergistically effective amount to control the growth of at least one microorganism. Methods for controlling the growth of microorganisms with the compositions are also disclosed.
Abstract:
"método para inibir aderência bacteriana em uma superfície submergível e método e composição para controlar incrustração biológica em um sistema aquoso". a invenção se relaciona a um método para inibir aderência bacteriana em uma superfície submergível". o método contata a superfície submergível com uma quantidade efetiva de pelo menos um ácido sulfâmico ou sal do mesmo para inibir adesão bacteriana à superfície submergível. a invenção também se relaciona a um método para controlar incrustração biológica de um sistema aquoso. este método acrescenta uma quantidade efetiva de pelo menos um ácido sulfâmico ou sal do mesmo para inibir aderência bacteriana em uma superfície submersa dentro do sistema aquoso. este método efetivamente controla incrustração biológica sem substancialmente matar os organismos incrustrados. o ácido sulfâmico utilizado na invenção tem a fórmula r^ 1^r^ 2^ncs (o)~ 2~ (oh) . nesta fórmula r^ 1^ e r^ 2^ são independentemente um hidrogênío, um grupo alquila c~ 4~-c~ 20~ ou um grupo ciclohexila. no entanto, r1 e r2 não são ambos hidrogênio. alternativamente, r^ 1^ e r^ 2^, juntos com o n, podem formar um anel heterocíclico de 5-8 membros de fórmula (i). no anel heterocíclico, x é o, nh ou ch~ 2^. o sal de um ácido sulfâmico pode ser um sal ácido um sal de ácido sulfâmico quaternizado. a invenção também se relaciona a uma composição contendo ácido sulfâmico ou sais do mesmo e utilizáveis nos métodos acima. a composição compreende pelo menos um ácido sulfâmico ou sal do mesmo em uma quantidade efetiva para inibir aderência bacteriana à superfícies submergíveis ou submersas.
Abstract:
Una composición que comprende (a) un cianoditiocarbimato de Fórmula (I)**Fórmula** en la que X es CI y R es un grupo hexilo y (b) al menos un segundo microbicida seleccionado de 1,4- bis(bromoacetoxi)-2-buteno, 2-(tiocianometiltio)benzotiazol, un bis(tiocianato) de metileno, N-dodecilmorfolina, butilcarbamato de yodopropargilo, 4,5-dicloro-2-N-octil-4-isotiazolin-3-ona, 2-N-octil-4-isotiazolin-3-ona, una sal de bis-amonio cuaternario; p-clorometacresol, o-fenilfenol, diyodometil-p-tolilsulfona, diyodometil-p-clorofenilsulfona o bronopol.
Abstract:
Microbicidal compositions including (a) cyanodithiocarbimate and (b) an N-alkyl heterocyclic compound; a triazole compound or salt thereof or metal complex thereof; a microbicide with an activated halogen atom or a formaldehyde releasing compound; 1,4-bis(bromoacetoxy)-2-butene; 2-(thiocyanomethylthio)benzothiazole; a methylene-bis(thiocyanate); a halogenated acetophenone; a halopropynl compound; an iodosulfone; a phenol; a halocyanoacetamide compound and/or a quaternary ammonium compound are described. Components (a) and (b) can be present in a synergistically effective amount to control the growth of at least one microorganism. Methods for controlling the growth of microorganisms with the compositions are also disclosed.
Abstract:
A method and composition for killing, preventing, or inhibiting the growth of microorganisms in an aqueous system or on a substrate capable of supporting a growth of microorganisms are provided by providing a lactoperoxidase, hydrogen peroxide or a peroxide source, a halide, other than a chloride, or a thiocyanate, and, optionally, an ammonium source, under conditions in which the lactoperoxidase, peroxide from the hydrogen peroxide or peroxide source, halide or thiocyanate and ammonium from the ammonium source interact to provide an antimicrobial agent to the aqueous system or substrate.
Abstract:
The invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one sulfamic acid or salt thereof to inhibit bacterial adhesion to the submergible surface. The invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one sulfamic acid or salt thereof to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The sulfamic acid used in the method of the invention has the formula R1R2NS(O)2(OH). In this formula, R1 and R2 are independently a hydrogen, a C4-C20 alkyl group or a cyclohexyl group. However, R1 and R 2 are not both hydrogen. Alternatively, R1 and R2, together with the N, may also form a 5-8 membered heterocyclic ring having the formula:In the heterocyclic ring, X is O, NH, or CH2. The salt of sulfamic acid can be an acid salt or quaternized sulfamic acid salt. The present invention also relates to a composition containing sulfamic acids or salts thereof useable in the above methods. The compositions comprise at least one sulfamic acid or salt thereof in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.
Abstract:
The invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one sulfamic acid or salt thereof to inhibit bacterial adhesion to the submergible surface. The invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one sulfamic acid or salt thereof to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The sulfamic acid used in the method of the invention has the formula R1R2NS(O)2(OH). In this formula, R1 and R2 are independently a hydrogen, a C4-C20 alkyl group or a cyclohexyl group. However, R1 and R 2 are not both hydrogen. Alternatively, R1 and R2, together with the N, may also form a 5-8 membered heterocyclic ring having the formula:In the heterocyclic ring, X is O, NH, or CH2. The salt of sulfamic acid can be an acid salt or quaternized sulfamic acid salt. The present invention also relates to a composition containing sulfamic acids or salts thereof useable in the above methods. The compositions comprise at least one sulfamic acid or salt thereof in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.
Abstract:
Described is a method to inhibit bacteria from adhering to a submergible metal surface within an aqueous system, comprising the step of contacting the submergible surface with an amino methyl phosphonic acid or a salt thereof. The amino methyl phosphonic acid is a compound of the formula R1R2NCH2P(O)(OH)2, wherein, R1 and R2 are independently a C6-C14 alkyl group or H, but R1 and R2 are not both H, and the salt of an amino methyl phosphonic acid is an acid salt or quaternized acid salt. The method is suitable for submergible surfaces such as a ship hull, a boat hull, a marine structure, a tooth surface or a medical implant surface.