Unlock instant, AI-driven research and patent intelligence for your innovation.

Water treatment containing DBNPA for use in sanitizing recreational water

A horizontal and combined product technology, applied in the direction of disinfection, sanitary equipment for toilets, water supply devices, etc., can solve the problems of preventing sunlight, affecting the stability and disadvantages of swimming pools and spas

Inactive Publication Date: 2014-03-26
ARCH CHEM INC
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Five main mechanisms can adversely affect stability in swimming pools and spas, and ultimately efficacy
On the other hand, bromine-releasing biocides generally cannot be stabilized against sunlight and are therefore only used in a small percentage of swimming pools

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The purpose of this experiment was to evaluate the prevention of a single biocide or combination of biocides (plus any other permutation of oxidizing agents and / or adjuvants) preventing inoculated microorganisms from establishing colonies in the water and sand filter media, thereby The robustness or ability to prevent biofouling of the system.

[0032] 800 ml of synthetic swimming pool water (water containing calcium chloride dihydrate and sodium bicarbonate solution at neutral pH) was pumped through a bank of swimming pool filter sand by means of a peristaltic pump. Maintain the water temperature in each system in the 80-90°F range. The biocide 2,2-dibromo-3-nitrilopropionamide (DBNPA) was added daily at a concentration of 2 ppm. When required, the oxidant hydrogen peroxide was added at a concentration of 27.5 ppm at the beginning of the experiment and 7 ppm weekly thereafter, and the loss of hydrogen peroxide in each system was monitored by colorimetric assay. In an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention is directed to a composition for reducing the levels of microorganisms in recreational water systems, comprising: (1) a biocidal effective amount of dibromonitrilopropionamide (DBNPA); (2) optionally, a biocidal effective amount of an algaecide selected from the group consisting of didecyldimethylammonium chloride (DDAC), zinc, and copper; and (3) optionally, a compound capable of in situ activation to form an oxidizing agent; wherein the composition is effective for reducing the levels of microorganisms in recreational water systems. The present invention is also directed to a method of controlling the growth of microorganisms in recreational water systems, comprising the step of providing the above composition; and adding the composition to a recreational water system.

Description

Background of the invention [0001] 1. field of invention [0002] The present invention relates to methods and compositions for the treatment of recreational water, more particularly to the use of 2,2-dibromo-3-nitrilopropionamide (DBNPA), optionally with an algicide, and optionally Treatment of pool and spa water with oxidizers and auxiliaries. [0003] 2. Related technical description [0004] 2,2-Dibromo-3-nitrilopropionamide (DBNPA) is known to be useful as a biocide for cooling towers, pulp machine paper and dry cleaning fluids. There are many examples of DBNPA compositions in the prior art, such as US Patent Nos. 7,208,511, 7,067,063, 7,008,545, 6,796,436, 6,733,654, 6,699,684, 6,478,973, and 6,369,104. [0005] DBNPA is available in various forms, including liquids, granular solids, powdered solids, and flaked solids. Each of these forms has advantages and disadvantages, depending on the specific application. The liquid form facilitates the rapid establishment o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61L2/00
CPCA61K45/06A61K33/30A61K33/34A61K31/16A61K2300/00
Inventor M·J·温霍克崔成美K·P·罗伯茨L·P·奥马利
Owner ARCH CHEM INC