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:
Nov. 23, 1982
Filed:
Jan. 06, 1982
Gerald V Wootton, Akron, OH (US);
Parley C Lane, Jr, Cuyahoga Falls, OH (US);
Kong S Yi, Parma, OH (US);
The B. F. Goodrich Company, Akron, OH (US);
Abstract
Process for preconcentrating polymer cement normally containing about 15% solids comprising mixing therewith an amount of a hydrocarbon nonsolvent liquid sufficient to form a two-phase system but insufficient to precipitate the polymer, and separating the two phases; the polymer cement is a honey-like solution of a polymer prepared by ring opening polymerization of at least one monomer containing the norbornene group in a nonpolar hydrocarbon solvent; the upper phase being a thin hydrocarbon liquid comprising nonsolvent, a substantial portion of the nonpolar solvent in the polymer cement, and impurities, and the lower phase being a preconcentrated polymer cement containing at least 20% solids.