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Saps com funcionen els detergents que renten la roba? Miquel Osset, cap de la Divisió de R+D Fast Moving Consumer Goods al Centre Tecnològic LEITAT, ens parla dels compostos químics que s'elaboren (más)
Saps com funcionen els detergents que renten la roba? Miquel Osset, cap de la Divisió de R+D Fast Moving Consumer Goods al Centre Tecnològic LEITAT, ens parla dels compostos químics que s'elaboren per a la neteja de la llar dins del Cicle de Conferències de Química del mNACTEC (menos)
Ocultar diapositivas
Ocultar diapositivas
Química i Neteja de la Llar
-NL- -B- -E- -G- At what water temperature is the laundry done?
Soils
Laundry Water Detergent Washing device Partners in the washing process
Four factors must be regulated in
the washing operation:
washing chemistry (detergent)
mechanical (más)
Four factors must be regulated in
the washing operation:
washing chemistry (detergent)
mechanical input
time
temperature Water Chemistry Mechanical
Action Temperature Time The wash parameters (menos)
The wash parameters
Global Washing Systems
Source: IEC Comparison of the Washing Conditions in EU/USA/Japan
Textile Fibers Natural Fibers Cotton
Wool
Silk
Linen
Hemp
Sisal
Jute Man-made Fibers Organic (más)
Textile Fibers Natural Fibers Cotton
Wool
Silk
Linen
Hemp
Sisal
Jute Man-made Fibers Organic Inorganic Carbon Fiber
Glass Fiber
Metal Fiber Regenerated Synthetic Cuprammonium Rayon
Viscose
Modacrylic Fiber
Acetate
Triacetat Acryl (PAN)
Polyvinylchloride (PVC)
Polyamide
Polyester (PES)
Polyethylene
Polypropylene
Polyurethane (Elastan) Types of textile fibers (menos)
Wool Polyester Cotton Typical textile fibers
builders surfactants bleaching agent
and activators enzymes, antire-deposition agents,
optical (más)
builders surfactants bleaching agent
and activators enzymes, antire-deposition agents,
optical bighteners, sta-bilizers, fragrance etc. Bleaching effect Washing
performance Additional
effects Detergent ingredients (menos)
CONVENTIONAL POWDER HEAVY DUTY DETERGENT
ADDITIVES
ANIONIC SURFACTANT
NONIONIC SURFACTANT (más)
CONVENTIONAL POWDER HEAVY DUTY DETERGENT
ADDITIVES
ANIONIC SURFACTANT
NONIONIC SURFACTANT BLEACHING AGENTS
BLEACH ACTIVATORS SODIUM SULFATE
WATER
BUILDERS
SURFACTANTS BLEACH SYSTEM FILLERS/PROCESSING AIDS ZEOLITE A
SODIUM CARBONATE
POLYCARBOXYLATE
SODIUM SILICATE
SODIUM CITRATE
SODIUM TRIPHOSPHATE OPTICAL BRIGHTENERS
ENZYMES
STABILIZERS
SOIL ANTIREDEPOSITION AGENTS
CORROSION INHIBITORS
FOAM REGULATORS
FRAGANCES (menos)
Water has a surface tension
Surfactants decrease the surface tension
Types of surfactants
Solubilization of fat by surfactants
Sunlight reaching the earth consists of a broad spectrum of electromagnetic waves with wavelengths (más)
Sunlight reaching the earth consists of a broad spectrum of electromagnetic waves with wavelengths between 290 and 5000 nm. Wavelengths between 290 and 400 nm represent the ultraviolet radiation and make up 3 – 5 % of the whole solar energy. Visible light is in a range from 400 – 700 nm and constitutes 50 % of the sunlight. Most objects in our environment are colored due to the fact that they only reflect a certain part of the light falling in. The more visible light an object reflects the brighter it appears to the eye. Spectrum of sunlight (menos)
Whiteness enhancement of optical brighteners
Detergent enzymes enzyme protein soil fiber enzymes split the big insoluble protein molecules to (más)
Detergent enzymes enzyme protein soil fiber enzymes split the big insoluble protein molecules to smaller fragments these fragments are water soluble and are removed just like pigment or fatty soil by the wash liquor a clean fiber remains (menos)
Cellulase keeps the color of textiles bright without cellulase with cellulase
Zeolite A-Calcium binding
by ion exchange Na12(AlO2)12(SiO2)12 · 27 H2O
Formula comparison powder vs. liquid detergents *
Supercompact powders (2nd generation of compact powders) exhibit higher bulk densities (800-900 (más)
Supercompact powders (2nd generation of compact powders) exhibit higher bulk densities (800-900 g/L).
Compared to Conventional Powders, Compact and Supercompact powders have a reduced content of sodium sulfate and water.
Bulk density depends on raw materials density, water content and particle size
Bulk density is related to the volume of powder in the package
Bulk density (menos)
Finished product = 50-90% Tower compound + 10-50% Postaddition
Reasons
Postaddition of (más)
Finished product = 50-90% Tower compound + 10-50% Postaddition
Reasons
Postaddition of thermally and or chemically incompatible ingredients.
Finished product appearence (particle size distribution), solubility and density
Amount of liquids to be added
Smaller postadded particles (particulary those with high density), tend to segregate in the package
Energy cost *15-20% water of the tower compound is evaporated during the spray-drying stage Tower compound vs postaddition (menos)
Laundry Aids. Water softeners Water softener frame formulation
Laundry Aids. Bleaches Bleach booster formulation (sodium percarbonate)
The PCB, within (más)
Laundry Aids. Bleaches Bleach booster formulation (sodium percarbonate)
The PCB, within detergent formulations, in presence of humidity or under critical environmental condition (high temperature and pressure) can degrade with an exothermic reaction that may lead to self heating. (menos)
1 2 3 4
Ariel Efervescente con bicarbonato Colon 101 manchas
Gràcies