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Textile Auxiliarie
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Dye fixing agent - Formaldehyde free
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Rishlyte 8450 is a Formaldehyde-free wet fastness improver for dyeings and prints produced with reactive dyes on cellulosic fibres.
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Characteristics |
Benefits |
| Contains no formaldehyde. |
No contamination of goods effluent, or environment |
| Improves the wash fastness and other wet fastness properties of dyeings with reactive dyes. |
Excellent water severe, perspiration and improved fastness to washing. |
| Minimal dye specific shade changes. |
Good reproducibility. |
| High exhaustion. |
Negligible effluent pollution, high cost effectiveness. |
| Minimal dye-specific impairment of light fastness. |
Light fastness requirements dependables met. |
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Dye fixing agent - Formaldehyde based
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Rishlyte 8459 is a Formaldehyde-based wet fastness improver for dyeings and prints produced with direct and reactive dyes on cellulosic fibres.
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Characteristics |
Benefits |
| Improves the wash fastness and other wet fastness properties of dyeings with reactive dyes. |
Excellent water severe, perspiration and improved fastness to washing |
| Minimal dye specific shade changes. |
Good reproducibility. |
| High exhaustion. |
Negligible effluent pollution, high cost effectiveness. |
| Minimal dye-specific impairment of light fastness. |
Light fastness requirements dependables met. |
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Colour removal Polymers from Textile effluents
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Rishlyte 8005 series is used to decolourise effluents containing anionic, direct or reactive dyes. It is a liquid product, therefore easy to handle and is suitable for use in dyehouses and in municipal biological sewage treatment plants. It is Compatible with the usual inorganic and organic precipitants.
The amount required is 0.1-1 ml/L Rishlyte 8005, depending on the amount of unfixed dyestuff and the desired degree of decoloration. In the case of unfixed direct dyestuffs, smaller amounts are required. The degree of decoloration is determined by measurement of extinction.
Combination with other organic flocculation auxiliaries (e.g. polyacrylamides) and inorganic salts (e.g. iron salts) is possible. However, these products have hardly any effect on the flocculation of reactive dyestuffs.
Rishlyte 9231 and 9232 are also used to remove colour from industrial effluents and function as good precipitating coagulants. |
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Presently conventional coagulants (i.e. salts of Aluminium or Iron) are used to precipitate dissolved solids and also to settle suspended matter in many effluent treatment plants. These pose problems of carry over finely divided flocs of aluminum hydroxide or ferric hydroxide into the clarified water and produce bulky sludge having a high water content. This increases the sludge handling and disposal costs.
Due to drop in pH on use of these coagulants, often further chemicals are needed to counter the effect.
Rishlyte range of coagulants for industrial waste water treatment consists of 'nontoxic' cationic polymers which replace inorganic coagulants (viz Alum, PAC, Lime, Ferric salts) and also reduce cost of treatment.
Numerous other benefits include -
a) Reduction in sludge volume and desludge frequency.
b) Reduced sulphate/ chlorides in the treated effluent and negligible drop in pH of treated water.
c) Reduction in corrosion in coagulant addition pipeline and pump.
d) Automated dosing & controlling of suspended in plants is possible with Rishabh's coagulants
e) Savings in labour and electricity costs |
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Coagulants for Industrial raw water treatment
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Presently conventional coagulants (i.e. salts of Aluminium or Iron) are used to remove turbidity in water. These pose problems of carry over finely divided flocs of aluminum hydroxide or ferric hydroxide into the clarified water and also produce bulky sludge having a high water content.
During monsoon season when turbidity suddenly increases, numerous problems are faced in treatment of water with conventional chemicals e.g. Alum and Lime.
Rishlyte range of coagulants for industrial raw water treatment consists of 'nontoxic' cationic polymers which replace inorganic coagulants (viz Alum, lime, Ferric salts) and also reduce cost of treatment. Numerous other benefits include -
a) Reduction in sludge volume and desludge frequency.
b) Reduction in Aluminium ion carryover which is a health hazard.
c) Reduced load on DM plant and negligible drop in pH of treated water.
d) Reduction in corrosion in alum addition pipeline and pump.
e) Automated dosing & controlling of turbidity and suspended solids in plants
f) Savings in labour and electricity costs
g) Reduced requirement for storage space |
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Rishfloc Range of flocculants consists of polymers & copolymers of Acrylamide. These are water soluble polyelectrolytes and have very high molecular weights. The range includes Anionic, Nonionic and Cationic polymers in powder, emulsion as well as in solution form.
Flocculation is the agglomeration of tiny particles into large units. It therefore, finds application in many different industries and helps in achieving clear supernatant, results in fast settling and increases capacity of clarifiers and clariflocculators apart from noticeable cost reduction. |
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Fluorescent Whitening Agents on a substrate exhibit fluorescence. These organic molecules are capable of absorbing radiation of short wavelength and high energy which is normally invisible to human eye, and passing into an excited state of higher energy. These excited molecules then return to the ground state of lower energy with re-emission of radiation of lower energy and longer wavelength i.e. visible light.
Textile yarns and fabrics have a natural creamy ground, and even after chemical bleaching still retain a faint creamy color. Fluorescent Whitening Agents, are substances that can provide the blue-violet light needed to compensate the yellow component of the day light in the 300-400 nm range. As a result of this light conversion, the FWA-treated material apparently reflects more viable light than was originally incident on it, and therefore appears whiter and brighter. |
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