Mastic composition and composite structural panels formed theref

Details Mastic composition and composite structural panels formed theref Mastic composition and composite structural panels formed theref

1976-03-08

1978-09-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

156 42, 156279, 156280, 156510, 156543, 260 4213, 264109, 264DIG7, 428117, C08J 922

Patent

active

041118626

ABSTRACT:
A mastic composition formed of a substantially homogeneous imporous mixture of a predetermined volume of low-density expanded closed-cell synthetic resin beads and a slurry prepared from calcined gypsum and water wherein the interstitial volume of the expanded beads is not substantially more than the volume of slurry. The substantially homogeneous mixture is self-adhering as a thick layer on an inverted smooth surface and yet separable therefrom as an integral layer, the mastic composition setting to a hard, strong, dimensionally stable, heat-and sound-retardant material. Methods of mixing mastic compositions, and composite structural panels utilizing mastic compositions as well as the methods and apparatus for forming such panels are also disclosed.

REFERENCES:
patent: 3214393 (1965-10-01), Sefton
patent: 3251916 (1966-05-01), Newnham et al.
patent: 3257338 (1966-06-01), Sefton
patent: 3272765 (1966-09-01), Sefton

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