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:
Feb. 03, 1976
Filed:
Aug. 20, 1973
Peter Franz, Mumpf, CH;
Buss, A.G., Basel, CH;
Abstract
A process for preparing fusible, crosslinkable resinous intermediates of polyaddition and polycondensation resins consisting essentially of continuously proportioning and feeding a resin precursor composition in solid and liquid form, in a mixing and kneading machine, intensively mixing the resin precursor composition in both the longitudinal and transversal directions and simultaneously heating said composition, thereby plasticizing and homogenizing the same below the temperature of cross-linking and hardening and at a temperature of 50.degree.-90.degree. C during a brief average dwell time in the mixing chamber of said machine which will prevent excessive stiffening of the mixture in the form of a pasty mass to thereby plug the machine, continuously expelling the plasticized intermediate resin mix at a temperature of 50.degree. to 90.degree. C in the form of a pasty mass through a hollow die with twin conical outlet heated to a temperature of not more than 50.degree. C. The intermediate resin mix which is expelled is cooled, solidified, preformed by a pair of rollers into a strand which is friable and is adapted to be broken by up grinding to form a powdered intermediate.