Polyurethane composition and laminates made therewith
Abstract
Abstract THIS INVENTION RELATES TO AN ADHESIVE FOR USE IN FORMING LAMINATES OF POLYESTER IMPREGNATED FIBERGLASS. THIS ADHESIVE COMPRISES A REACTION MIXTURE OF 100 PARTS OF A REACTIVE HYDROGEN CONTAINING POLYMERIC MATERIAL OF ABOUT 700 TO 4500 MOLECULAR WEIGHT SELECTED FROM THE CLASS CONSISTING OF POLYESTER POLYOLS, POLYETHER POLYOLS AND POLYESTER AMIDES, AN ORGANIC POLYSIOCYANTE, AT LEAST 5 PARTS TO NO MORE THAN ABOUT 200 PARTS OF AN INERT POWDERY FILLER WITH THE PROVISO THAT THE FILLER SHALL NOT EXCEED THAT AMOUNT WHICH RENDERS THE RESULTING MIXTURE UNSPREADABLE AND SUFFICIENT MONOMERIC NITROGEN CONTAINING POLYOL HAVING 3 TO 6 HYDROXYL TO BE ESSENTIALLY EQUIVALENT TO THE EXCESS POLISOCYANTE. CATALYST OF THE TIN AND AMINE TYPE MAY BE UTILIZED, IF DESIRED. AMOUNTS OF 38, 52 AND 80 PARTS OF ORGANIC POLYISOCYANTE PER 100 PARTS OF THE POLYMERIC MATERIAL ARE SOME OF THE LEVELS USED IN SOME THE EXAMPLES.
Inventors
- 👤 W Larson
- 👤 N Bender
Bibliographic Details
Claims Analysis
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