Chemistry: molecular biology and microbiology – Process of utilizing an enzyme or micro-organism to destroy... – Treating animal or plant material or micro-organism
Patent
1995-06-07
1999-10-26
Knode, Marian C.
Chemistry: molecular biology and microbiology
Process of utilizing an enzyme or micro-organism to destroy...
Treating animal or plant material or micro-organism
435 29, 435 711, 435822, 435843, 435849, 426 52, 162 5, 162 72, 1621571, 162160, 162161, 162100, 162156, 210606, 523400, D21C 300, C12N 100, C12N 120, D21F 1100
Patent
active
059726911
ABSTRACT:
Process for making polyamine-epihalohydrin resin products having very low levels of epihalohydrin or epihalohydrin hydrolyzates, particularly useful in papermaking, which includes, amongst other features, producing a polyamine-epihalohydrin polymer in aqueous solution, terminating the reaction by cooling, adjusting the pH of the polyamine-epihalohydrin solution to from about 7.5 to about 11 and concurrently heating the solution to about 35 to about 50.degree. C., and contacting the aqueous solution with selected microorganisms or an enzyme, and deactivating or removing the enzymes or microbes, cooling to about 20.degree. C. and stabilizing the composition by adjusting the pH to about 2.0 to 5.0 by the addition of acid.
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Bates Robert
Branton Harvey J.
Hardman David J.
Robinson Gary K.
Hercules Incorporated
Knode Marian C.
Lee Datquan
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