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1. (WO1991009077) A METHOD OF FOAMING PLASTIC MATERIALS AND A BLOWING AGENT FOR USE THEREWITH
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/009077 International Application No.: PCT/DK1990/000328
Publication Date: 27.06.1991 International Filing Date: 14.12.1990
Chapter 2 Demand Filed: 08.07.1991
IPC:
C08J 9/14 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
9
Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
04
using blowing gases generated by a previously added blowing agent
12
by a physical blowing agent
14
organic
Applicants:
ØSTERGAARD, Hans, Jørgen [DK/DK]; DK
Inventors:
ØSTERGAARD, Hans, Jørgen; DK
Agent:
SKØTT-JENSEN, K.; Lemmingvej 225 DK-8361 Hasselager, DK
Priority Data:
6352/8914.12.1989DK
Title (EN) A METHOD OF FOAMING PLASTIC MATERIALS AND A BLOWING AGENT FOR USE THEREWITH
(FR) PROCEDE DE TRANSFORMATION EN MOUSSE DE MATIERES PLASTIQUES ET AGENT GONFLANT UTILISE CONJOINTEMENT
Abstract:
(EN) By the intensive endeavours for finding harmless substitutes for freon as a blowing agent in the production of foamed materials there has so far been indicated only very few substances usable under ambient pressure and temperature conditions. Of particular importance has been a mixture of trichloroethane and R-22, but even these substances exhibit a certain ozone decomposing effect. However, according to the present invention it is possible to replace these two substances entirely or partly by trichloroethylene and tetrafluoroethane, respectively, these substances being both well usable and negligibly ozone decomposing.
(FR) Les efforts intensifs de recherche de produits de substitution sans danger du fréon utilisé comme agent gonflant dans la production de matières transformées en mousse, n'ont permis jusqu'à maintenant, d'obtenir que très peu de substances utilisables dans des conditions de pression et de température ambiantes. Le mélange de trichloroéthane et de R-22, bien qu'il ait un intêret particulier, présente un certain effet de décomposition de l'ozone. Toutefois, selon l'invention, il est possible de remplacer ces deux substances entièrement ou partiellement par du trichloroéthylène et de tétrafluoroéthane, respectivement, ces substances présentant à la fois une utilisation idoine et une décomposition négligeable de l'ozone.
Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MW, NL, NO, RO, SD, SE, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Danish (DA)
Also published as:
EP0543813AU1991069604