C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
134/3.72
C11D 3/10 (2006.01) C11D 3/02 (2006.01) C11D 3/12 (2006.01)
Patent
CA 1230531
RETARDING SETTING OF CRUTCHER SLURRY FOR MANUFACTURING BASE BEADS FOR DETERGENT COMPOSITIONS ABSTRACT OF THE DISCLOSURE: A process is described for retarding or preventing the setting of a miscible and pumpable crutcher slurry intended to be spray dried to base beads for subsequent conver- sion to a built synthetic organic nonionic detergent composi- tion. The slurry, which contains described proportions or water softening zeolite, water soluble salt(s), including sodium bicarbonate and sodium carbonate, and a swelling bentonite, sometimes sets up in the crutcher in which it is being prepared. Often such solidification is spontaneous after the bentonite has been added to the crutcher, and sometimes occurs only minutes after such addition. When 0.5 to 5% of magnesium sulfate is incorporated in the crutcher mix such undesirable setting of the mix is delayed or prevented entirely, and crutching times of at least one hour (and sometimes appreciably longer) are attained, after which the crutcher slurry is still miscible, and is pumpable to a spray drying tower. In addition to sodium bicarbonate and sodium carbonate the crutcher mixes may also contain sodium sesquicarbonate (sometimes at least partially in replacement of the bicarbonate and carbonate), sodium sulfate and small amounts of sodium silicate, with the proportion of sodium silicate being no more than 2% of the crutcher mix, and desirably being nil. No citric acid or citrate is required to help maintain the fluidity of the crutcher slurry and citric materials are omitted from the crutcher mixes. The invention also relates to the crutcher slurries made, a process for making spray dried beads from the described crutcher slurries, base beads made from the slurries by such spray drying process, and built synthetic organic nonionic detergent compositions made from such base beads by absorption therein of suitable nonionic detergent. This invention relates to a process for retarding or preventing the setting of a miscible and pumpable crutcher slurry which is suitable for spray drying to base beads that are useful for the manufacture of detergent compositions. More particularly, the invention relates to retarding or preventing the setting of such slurries which include relative- ly high proportions of normally solid materials and relatively little water, and in which the bentonite is present together with zeolite and a water soluble sodium salt of a certain type. In the preparation of detergent compositions of the built synthetic organic nonionic detergent type it is - 2 -
458176
Colgate-Palmolive Company
Smart & Biggar
LandOfFree
Retarding setting of crutcher slurry for manufacturing base... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Retarding setting of crutcher slurry for manufacturing base..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retarding setting of crutcher slurry for manufacturing base... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1222808