Lightweight joint compound having improved paintability

Details Lightweight joint compound having improved paintability Lightweight joint compound having improved paintability

1986-02-20

1987-08-11

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 43, 524 47, 524 53, 524268, 524423, 524425, 524445, 523212, 523218, 106113, 106114, 106115, 106308Q, C04B 1116

Patent

active

046862536

ABSTRACT:
Expanded perlite coated with a composition to render the perlite impervious to water, and a joint compound incorporating the same. The perlite is ground prior to expansion to provide subsequently expanded perlite having a mean particle size from about from about 50 to about 70 microns, the joint compound formed from the perlite having greater uniformity in paint gloss appearance between the painted surface of the joint compound and the painted surface of the gypsum wallboard on which the joint compound is applied.

REFERENCES:
patent: Re29753 (1978-09-01), Williams
patent: 2690594 (1952-03-01), Kirksey
patent: 3321410 (1967-05-01), MacArthur et al.
patent: 3386223 (1968-06-01), Wegwerth
patent: 3565851 (1971-02-01), Neuroth
patent: 3649588 (1972-03-01), Kennedy-Skipton
patent: 3658564 (1972-04-01), Gerow et al.
patent: 4287103 (1981-09-01), Francis et al.
patent: 4454267 (1984-06-01), Williams
patent: 4454288 (1984-06-01), Lee et al.

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