Liquid bleaches detergents

Squeeze bottles, toys, housewares, lids, containers made from LDPE. Blow-molded HDPE used as containers for bleaches, liquid detergents, milk and other beverages, automobile and truck gas tanks, crates and pails... 

It is sometimes possible to add properties in liquid formulations that provide additional functions. Examples in development or in commercial use as of 1993 include microencapsulation (qv) of enzymes for protection against bleach when dispersed in a liquid detergent addition of certain polymers to protect the enzyme after it has been added to liquid deteigents (32), or to boost activity in the final application addition of surfactants or wetting agents,... 

The addition of bleaches to aqueous or nonaqueous heavy-duty liquid detergents will impose even more stringent stability requirements on FWAs [144-146],... 

An inherent weakness concerning liquid detergents is the inability to stabilize cost effectively an active oxygen bleach species in the liquid detergent matrix. Nearly every major detergent manufacturer has launched a line extension of its formulation with a bleach alternative variant. The consumer receives a product... 

Liquid detergent process patents frequently define both compositional and process requirements, such as raw material concentrations and specifications, order of addition of critical components, thermal history, premix or adjuvant preparation methods, product/process stabilizers, distributive and dispersive mixing requirements, and process instrumentation. These patents apply to the production of primary raw material constituents, such as surfactants, builders, conditioning agents, rheology regulators, hydrotropes, disinfectants, bleach additives, etc., in addition to the specification of fully formulated detergent systems. 

Because of their superior resistance to hydrolysis compared to the inorganic polyphosphates (Chapter 5.3), HEDPA and NMPA (Chapter 12.11) have become particularly important in liquid detergents, hard surface cleaners and stabilised bleaching formulations. Other applications are in textile processing and paper making, to control heavy metal ion concentrations, to reduce stains and to reduce water hardness. 

Laundry detergents vary widely in compositions and particular uses and can be partial-built, complete-built, prewash, main wash, bleaching, or enzyme detergents. The liquid detergents can be structured or unstructured. 

The composition [2], properties [168,169], and environmental behavior [170] of bleach-containing powder and liquid detergent formulations have already been reviewed in detail in other parts of this series. In this chapter, we will therefore concentrate mainly on the optimum use of bleaching systems in heavy-duty powder detergents (HDPDs) and heavy-duty liquids (HDLs) formulation... 

WO 2004/053038 (2004) R. Weber, Henkel PAP Liquid detergent for delicate fabric containing low-temperature bleach system... 

The development of much more complex, efficient, and sophisticated detergents (e.g., by introducing bleaching systems) has increased the demand for robusmess of the enzyme formulation. Furthermore, the popularity in recent years of heavy-duty liquid detergents has pressed for the development of stable liquid formulations of enzymes for this segment. Finally, the majority of the more sophisticated detergents today have more than one enzyme present—up to four have been described—and as proteases normally are always present, it can sometimes create challenges. 

Improved stability At higher pH and temperature In liquid detergents Against bleaches Protein engineering High-yield enzymes ( new enzymes )... 

---