High strength foamed articles

Details High strength foamed articles High strength foamed articles

1986-07-16

1987-04-28

Foelak, Morton

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

427222, 427400, 428407, 521 56, 521 57, 521 59, 521 60, 521139, 525242, B27N 502

Patent

active

046613862

ABSTRACT:
Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.

REFERENCES:
patent: 3259594 (1966-07-01), Wright
patent: 3259595 (1966-07-01), Wright
patent: 3324052 (1967-06-01), Zwern
patent: 3960784 (1976-06-01), Rubens
patent: 4579872 (1986-04-01), Johnson

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