Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2011-01-18
2011-01-18
Harlan, Robert D. (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S249000, C524S494000
Reexamination Certificate
active
07872062
ABSTRACT:
A system for controlling the pH of a formaldehyde-free aqueous binder composition used in the manufacture of glass fiber products. Following the formation of an aqueous binder composition, acid is added to the composition to reduce the pH to less than about 3.4. After the acid is combined with the aqueous binder composition, the pH of the composition is measured and then compared within a pre-set set point. The rate of acid addition is then adjusted thereby adjusting the pH of the composition such that the measured pH equals the set point pH. The pH measurement is preferably done before the addition of other additives to avoid interference by those additives.
REFERENCES:
patent: 6071994 (2000-06-01), Hummerich et al.
Charbonneau Mark William
Luka Michael William
Harlan Robert D.
Johns Manville
Touslee Robert D.
LandOfFree
Control of pH in formaldehyde-free binder systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control of pH in formaldehyde-free binder systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of pH in formaldehyde-free binder systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2691358