ES437716A1 - Improvements in the manufacture of panels resistant to atmospheric agents. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in the manufacture of panels resistant to atmospheric agents. (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE2423987Aexternal-prioritypatent/DE2423987C2/en
Priority claimed from DE2424250Aexternal-prioritypatent/DE2424250C3/en
Application filed by Bayer AGfiledCriticalBayer AG
Publication of ES437716A1publicationCriticalpatent/ES437716A1/en
Process for obtaining polyurethane foamed materials by reaction of polyisocyanate with high molecular weight hydroxyl compounds in the presence of propulsion agents, known per se, and, if appropriate, in the presence of catalysts, as well as auxiliary foaming agents and additives, and optionally using simultaneously chain and/or crosslinking chain extenders, characterized in that polyurea dispersions and/or polyhydrazodicarbonamides are used as high molecular weight polyols in high molecular weight compounds containing at least one hydroxyl group. (Machine-translation by Google Translate, not legally binding)
ES437716A1974-05-171975-05-16Improvements in the manufacture of panels resistant to atmospheric agents. (Machine-translation by Google Translate, not legally binding)
ExpiredES437716A1
(en)
PROCESS FOR PREPARING FOAMY POLYURETHANES BY CONVERSION OF A POLYOL WITH AN ALLOPHANATE GROUPS CONTAINING POLYISOCYANATE IN THE PRESENCE OF WATER AND / OR OTHER INFLATANTS AND CATALYSTS, PREVENTLY USED AS A PREVENTIONAL PROPERTY AND SUITABLY INTENDED AS ATTENTIONALLY USED