Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1987-06-19
1989-06-06
Schofer, Joseph L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536107, C08B 3108, C08B 3102
Patent
active
048373141
ABSTRACT:
Cold water soluble etherified or esterified starch derivatives having a 20 rpm Brookfield viscosity of less than 15,000 cps when tested in the form of a 10 weight percent starch solids aqueous solution at 25.degree. C. and which forms a transparent film when dried from aqueous solution can be prepared by first preparing a non-crosslinked granular etherified or esterified starch derivative, washing said starch derivative to remove salt by-products therefrom and thereafter solubilizing said starch derivative and thinning same to the desired viscosity level. The resulting starch derivative products are particularly suitable for use in wall covering adhesive formulations and as protective colloids in emulsion polymerization processes.
REFERENCES:
patent: 3632803 (1972-01-01), Hjermstad et al.
patent: 4452978 (1984-06-01), Eastman
patent: 4465702 (1984-08-01), Eastman et al.
patent: 4716186 (1987-12-01), Portnoy et al.
Chapter XIII on "Starch Derivatives" from a book entitled Starch: Chemistry and Technology, vol. II, Industrial Aspects by Roy L. Whistler and Eugene F. Paschall (1967).
A. E. Staley Manufacturing Company
Campbell Michael F.
Schofer Joseph L.
Walker Alex H.
Wood J. Daniel
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