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1. (WO1989000594) A METHOD, A COMPOUND, AND A BLOWING AGENT FOR MAKING PLASTIC FOAM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000594 International Application No.: PCT/DK1988/000120
Publication Date: 26.01.1989 International Filing Date: 14.07.1988
Chapter 2 Demand Filed: 02.03.1989
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:
ÖSTERGAARD, Hans, Jörgen [DK/DK]; DK
Inventors:
ÖSTERGAARD, Hans, Jörgen; DK
Agent:
SKØTT-JENSEN, K.; Lemmingvej 225 DK-8361 Hasselager, DK
Priority Data:
3701/8716.07.1987DK
6828/8723.12.1987DK
Title (EN) A METHOD, A COMPOUND, AND A BLOWING AGENT FOR MAKING PLASTIC FOAM
(FR) PROCEDE, COMPOSE ET AGENT GONFLANT PERMETTANT LA FABRICATION D'UNE MOUSSE PLASTIQUE
Abstract:
(EN) It is well known that the use of the blowing agent monofluortrichlormethane, also called Freon 11 or R-11, for the production of polyurethane foam is highly disadvantageous in that R-11 has a decomposing effect on the ozone layer around our planet. In spite of a vast scientific research it has not so far been possible to provide a practically usable substitute for R-11, but such a substitute of a simple nature is provided by the invention. According to the invention use is made of a mixture of specific substances, which are generally undangerous in use and also otherwise advantageous, but the boiling points of which are so remote from the usual working temperature that each one of the substances will be totally unusable for the purpose. The two primary substances are 1.1.1.trichloroethane and R-22 with boiling points 75-76°C and -41°C, respectively; when these substances are mixed and are mixed into the compound to be foamed the process conditions will widely correspond to the use of R-11, though further advantages are achievable.
(FR) Il est bien connu que l'emploi de l'agent gonflant monofluortrichlorométhane, également appelé Fréon 11 ou R-11, pour la production de mousse de polyuréthane est très désavantageux en ce que le R-11 a un effet de décomposition sur la couche d'ozone entourant notre planète. Malgré de vastes recherches scientifiques il n'est toujours pas possible de produire un produit de remplacement R-11 facilement utilisable, capendant un tel produit de remplacement est décrit par l'invention. D'après ladite invention on utilise un mélange de substances spécifiques, pratiquement sans danger pendant l'utilisation et par ailleurs avantageux, mais dont les points d'ébullition sont si éloignées des températures de travail habituelles que chacune des substances, prise séparément, s'avère totalement inutilisable pour l'objectif à atteindre. Les deux substances primaires sont le trichloroéthane 1.1.1. et le R-22 dont les points d'ébullition respectifs sont de 75-76°C et de -41°C. Lorsque l'on mélange ces substances, et qu'on les mélange dans le composé à transformer en mousse, les conditions du procédé correspondent largement à l'utilisation du R-11, sans parler des autres avantages que l'on peut en tirer.
Designated States: AT, AU, BB, BG, BR, CH, DE, DK, 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, FR, GB, IT, LU, NL, SE)
African Intellectual Property Organization (BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
FI900228NO19900200EP0367798US4966921KR1019890701670AU1988021225