The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 1984
Filed:
Sep. 24, 1982
Applicant:
Inventors:
Wolfgang Cornely, Gladbeck, DE;
Hans Mehesch, Essen, DE;
Frank Meyer, Essen, DE;
Rolf Kubens, Odenthal, DE;
Martin Winkelmann, Leverkusen, DE;
Assignees:
Bergwerksverband GmbH, Essen, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; C08G / ; E02B / ;
U.S. Cl.
CPC ...
405264 ; 166295 ; 299 11 ; 405261 ; 521174 ; 521176 ; 523130 ; 523131 ; 523132 ;
Abstract
For consolidation of geological formations and artificial beds of rock, earth, and coal by means of foaming and hardening polyisocyanate/polyol blends, diols with secondary hydroxyl functions of the OH number range 150-1000 are used as diol component. Preferably a crude polyisocyanate blend (MDI) obtained by phosgenation of aniline/formaldehyde condensates which at ambient temperature assumes a liquid state, and the liquid prepolymers of said crude MDI are used as isocyanate components.