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:
Apr. 13, 1976
Filed:
Jul. 24, 1974
Toray Industries, Inc., Tokyo, JA;
Abstract
A polymer dispersed liquid is prepared by the following steps: (1) polymerzing at least two different types of monomers of the vinyl series in the presence of a block or graft copolymer of the vinyl series containing a component solvating in a dispersion medium (.alpha.) and a component not solvating in the dispersion medium, but being compatible with a dispersed polymer (.beta.) in an organic liquid in which a copolymer of the vinyl series to be produced is soluble; then at that time, uniformly admixing an alkylated melamine-formaldehyde reaction product before, during or after the polymerization, (2) distilling out a part of the organic liquid, thereby varying the solubility parameter of the organic liquid of said polymer solution by more than about 0.5.