Title:
FOAMED STYROL PRODUCT AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/1999/064503
Kind Code:
A1
Abstract:
Styrene beads are mixed with an inorganic boric acid compound. The mixture is pre-expanded and then allowed to stand for aging. Thereafter, an inorganic boric acid compound and a thermosetting resin are added to the pre-expanded beads, and the resultant mixture is expanded to produce a foamed styrol product (1). In this product (1), the surface of each expanded styrene bead (2) is coated with a coating film (3). When the product (1) is exposed to heat, the coating film (3) inhibits the styrene beads (2) from burning. Upon exposure to a large quantity of heat, the coating film (3) changes into a glassy coating film, which prevents the styrene beads (2) from burning in deeper parts thereof. The glassy film absorbs black smoke to thereby prevent black smoking.
Inventors:
FUJIMORI TAKASHI (JP)
Application Number:
PCT/JP1999/002817
Publication Date:
December 16, 1999
Filing Date:
May 28, 1999
Export Citation:
Assignee:
FUJIMORI TAKASHI (JP)
International Classes:
B29C44/00; C08J9/16; B29C67/20; C08J9/224; C08J9/228; B29K25/00; B29K105/04; B29K105/06; (IPC1-7): C08J9/224
Foreign References:
| JPS4541101B1 | 1970-12-23 | |||
| JPS5169545A | 1976-06-16 | |||
| JPS532463U | 1978-01-11 | |||
| JPS5167625A | 1976-06-11 | |||
| JPS5159963A | 1976-05-25 | |||
| JPS5086564A | 1975-07-11 | |||
| JPS4716565A | ||||
| JPS6422938A | 1989-01-25 | |||
| JPH03121144A | 1991-05-23 |
Attorney, Agent or Firm:
Kabasawa, Joo (Shinjuku 3-chome Shinjuku-ku, Tokyo, JP)
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