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:
Jun. 12, 1984
Filed:
Dec. 23, 1982
Hiroaki Koyama, Kobe, JP;
Shigeo Shimizu, Kobe, JP;
Kanebo Ltd., Tokyo, JP;
Abstract
A granular or powdery resin which is a condensation product of a phenol and an aldehyde and optionally a nitrogen-containing compound having at least two active hydrogens, said granular or powdery resin being characterized by (A) containing spherical primary particles and secondary particles resulting from the agglomeration of the primary particles, each of said particles having a particle diameter of 0.1 to 150 microns, (B) having such a size that at least 50% by weight thereof can pass through a 100 Tyler mesh sieve, (C) having a free phenol content, determined by liquid chromatography, of not more than 500 ppm, and (D) having a methanol solubility (S) of more than 20% by weight when about 10 g of the resin is heated under reflux in 500 ml of substantially anhydrous methanol.