Compositions: coating or plastic – Coating or plastic compositions – Proteinaceous material containing
Patent
1988-02-02
1989-07-11
Morris, Theodore
Compositions: coating or plastic
Coating or plastic compositions
Proteinaceous material containing
106181, 106314, 106315, 524 2, 524 5, 524 43, 524 44, C04B 2434, C08L 126
Patent
active
048468894
ABSTRACT:
This invention is a polymer blend useful in thin-bed mortar compositions comprising a water-soluble cellulose ether and a water-insoluble, but water-dispersible, polymer. The water insoluble, but water-dispersible polymer can include an unneutralized polyacrylic acid that is lightly crosslinked or methylcellulose with a viscosity from about 50 cps to about 150,000 cps, provided the polymeric blend containing methylcellulose is employed in a medium that has a pH of about 12 or greater, although a pH of less than 12 is workable, but is dependent upon the methoxyl content of the methylcellulose. The polymeric blend extends the working time of the composition in which it is employed and because the blend has sag binding characteristics, it also functions as a sag resistance aid.
REFERENCES:
patent: 2868753 (1959-01-01), Morgan
patent: 4021257 (1977-05-01), Bernett
patent: 4222920 (1980-09-01), Crisp
patent: 4487864 (1984-12-01), Bermudez
patent: 4594108 (1986-06-01), Greminger
patent: 4596838 (1986-06-01), Andreichuk
Morris Theodore
The Dow Chemical Company
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