| 配方类型： |
TEXTILES |
| 配方说明： |
Thin-Boiling (Soluble) Starch (U.S. Patent 2,276,984) |
| 配方组成： |
B: 35% Hydrogen Peroxide/1.40 oz.
Copper Sulfate/0.30 g.
A: Water/2.00 gal.
Water/0.25 gal.
The ingredients under A are placed in a stainless steel vessel,
equipped with steam coils, in the order given and with constant
stirring. After stirring the slurry for 15 minutes at room temperature,
B is added.
The temperature is then raised to about 160'f., that is, to a
temperature very slightly below the gel point of this particular starch.
this temperature is maintained for slightly over 2 hours, when a test
with titanium sulfate shows that the hydrogen peroxide has been
consumed. the starch is then filtered off and dried at about 160'F.
A 3% slurry of the treated starch, heated for about 15 minutes at 175'f.,
has the following characteristics
Iodine Color/blue
pH/7.1
Pearl Cornstarch/10.00 lb.
viscosity/40 seconds
soda Ash/0.33 oz. |
|
