Title:
ANTIIBLOCKING COATING FOR POLYSTYRENE BEADS
Document Type and Number:
Japanese Patent JPS5317662
Kind Code:
A
Abstract:
A complex is formed by the reaction of an aluminum salt such as aluminum sulfate with a high molecular weight (for example, above 60,000 M.W.) collagen. Collagen-aluminum complex is dispersed in water and serves as suspension agent for suspending polystyrene beads during impregnation of a blowing agent, even when the concentration of the suspending agent is of the magnitude of 0.05% by weight of the beads. The aqueous system is drained from impregnated expandable beads, which are washed, but which retain adherent deposits of said collagen-aluminum complex in measurable amounts. The dried coated beads have minimized propensity toward lumping when pre-expanded. The prepuffed particles can pass tests concerned with resistance toward static electrical phenonomen better than corresponding prepuffed particles lacking such deposit of collagen-aluminum complex.
Inventors:
CHIMOSHII AARUTAASU JIYUNIA
Application Number:
JP1203977A
Publication Date:
February 17, 1978
Filing Date:
February 05, 1977
Export Citation:
Assignee:
ARCO POLYMERS INC
International Classes:
C08J9/16; B29C44/00; B29C59/00; B29C67/00; C08J9/18; C08J9/22; C08J9/224; (IPC1-7): B29D27/00; C08J9/22