Detergent component replacement with enzyme co-granulate
Publication Date: 2010-Oct-27
The IP.com Prior Art Database
This disclosure relates to granular detergents containing multi-enzyme co-granules
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Detergent component replacement with enzyme co- granulate
This disclosure relates to granular detergents containing multi-enzyme co-granules.
Enzymatic detergent formulations
It is described in US2006205628 that enzymes can partly or fully replace detergent components such as surfactants, builder, and polymers. Preferred enzymes for replacement of detergent components include lipases, proteases, amylases, cellulases and oxidoreductases, pectinases, lipoxygenases, cutinases, hemicellulases and mannanases. An example of using enzymes as replacement for detergent components can be found in ( Household and Personal Care Today, Peter H. Nielsen & Peter Skagerlind, Vol.1 No.4 2007 ).
The choice of enzymes to be added to a detergent composition depends on what detergent components are to be replaced. In most cases, it is beneficial to combine two or more enzymes to be able to partly replace or fully replace one or more of surfactants, builders, or polymers. The enzymes can be added separately as individual granules, or as a combined additive comprising two or more of these enzymes, particularly co-granules where two or more enzymes are combined in one granule. An advantage of adding the enzymes as co-granules instead of single enzyme granules is that in the form of a co- granule, each enzyme will be present in more granules securing a more uniform distribution of enzymes in the detergent. For example, adding e.g. 0.5 wt% protease granules, 0.1 wt% amylase granules, 0.1 wt% lipase granules and 0.1% cellulase granules, totally 0.8 wt%, to a detergent as single enzyme granules, mean that each enzyme will only be represented by a certain number of particles in the detergent. Adding the enzymes in the form of a co-granulate at 0.8 wt% in the same ratio as the single enzyme granules, means that the lipase, amylase and cellulase will be present in more granule particles in the detergent securing a more uniform distribution. The same ratio of enzymes could also be applied in lower or higher enzyme strength, which would allow a lower or higher dosage of the co-granules. By the use of co-granules it is also possible to avoid physical segregation of different enzymes due to different granule particle sizes.
The issue of uniform enzyme granule distribution is most pronounced for segments where a low enzyme dosage is used in detergent including developing countries, non- concentrated detergent compositions and value-for-money segments, but can also be relevant for other segments such as highly concentrated detergents where space is a limiting factor.
Other advantages of using co-granules instead of single enzyme granules include easier handling at detergent production facilities, where only one enzyme product is needed rather than several and savings on granule raw material costs for the co-granulate producer.
The enzyme ratio of a co-granule could be 50% protease, 15% lipase, 15% cellulase, 10% amylase and 10% mannanase, but might also include othe...