Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1981-04-20
1982-09-28
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523219, 524425, 524426, 524427, 524446, C08K 334
Patent
active
043519121
ABSTRACT:
The present invention is directed to a trowelable, lightweight, synthetic stucco composition containing a crushable, lightweight aggregate, and specifically to the protection of the lightweight aggregate from substantial particle size reduction during troweling application by providing in the composition a protective amount of a hard, non-crushable aggregate having a protective particle size. The hard aggregate is strong enough to resist the troweling step without crushing, and serves to keep the trowel a spaced distance away from the substrate upon which the stucco composition is applied, to thereby substantially prevent crushable, lightweight aggregates of similar or smaller particle size from crushing, and to limit the crushing of crushable, lightweight aggregates having a larger particle size. The invention also includes the method of preventing substantial size reduction of the crushable, lightweight aggregate in the trowelable, lightweight, synthetic stucco composition by the provision of said hard, non-crushable aggregate therein.
REFERENCES:
patent: 3239475 (1966-03-01), Clark
patent: 3677988 (1972-07-01), Kimmel
patent: 4010134 (1977-03-01), Braunisch et al.
patent: 4176100 (1979-11-01), Rider
patent: 4222785 (1980-09-01), Henderson
Lipman Bernard
Northwood Mills Ltd.
Schofer Joseph L.
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