Catalase enzyme has two functions, first is catalytic and
destroyed with high temperature.
The second function oxidic , increasing with high temperature.
The catalase enzyme effects on the substrate of ortho –
phenylene diamine turning it into ar
omatic cancerogenus azo
compounds
organic acids such as, benzoic acid, salicylic acid and ascorbic
acid inhibit the effect of catalase enzyme substrate ortho –
phenylene diamine. The inhibition is competitive when the
benzoic acid and salicylic acid effects , while the inhibition is
non competitive when the ascorbic acid effect.
Fattypolyamide was prepared by reaction of (1,5-Diamino pentane) with
dimeric fatty acid C36 in molten state. The reaction was performed at 110 C˚
without catalyst, then with (Phosphoric acid, Sulphoric acid and Manganese
dioxides). The Kinetic st
udy was carried out on the reaction and followed by
determining the acid value of the product. The polyamidation reaction was
found to be on the overall a second order up to 59% conversion. Then the
reaction order changes. We found that the Catalyst increases the velocity of the
reaction with manganese dioxides the best Catalyst. The Degree of
Polymerization, Number Average Molecular Weight and Weight Average
Molecular Weight have been calculated during different times. The
relationships between Degree of Polymerization and Number Average
Molecular Weight, Weight Average Molecular Weight with times are linear
until 59%conversion at 110˚C with used catalysts. The highest (N.A.M.W) and
(W.A.M.W) was accomplished with the Catalyst MnO2.
The purpose of this research is to study the performance of peroxide bleach
materials (sodium carbonate peroxy hydrate, sodium perborate mono hydrate,
sodium perborate tetra hydrate) within the low foam powder formula, in terms
of its rate of disi
ntegration with and without an activator, under different
temperatures, in order to obtain a high detergency low foam powder formula.
The Syrian detergent companies used to add high percentage of perborate
salt in laundry detergents formulation to achieve best bleaching and cleaning
results. And usually the bleach activator which transforms the peroxides into
more effective mate
rials, was added to the formulation in non specified doses.
The studies have been made of the effect of the bleach activator -TAED on
the perborates salt show the possibility to reduce the amount of the used
perborates by controlling the - Perborates / TAED percentage in the detergent
formulation .
The released active oxygen depends on the ambiant temperature where
weak activity where detected when temperature exceeds ٦٠ celsius. This study
shows the role of the detergent formulation on the bleach activator where it
releases the active oxygen in a higher percentage when monohydrate sodium
perborate is used, and no effects were detected on the tensile strength of the
used fabric.
