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:
Dec. 25, 2001
Filed:
Oct. 15, 1998
Applicant:
Inventors:
Peter Dickinson, Kent, GB;
Nicholas R. Collins, Kent, GB;
Assignee:
Sericol Limited, Kent, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C 1/725 ; G03C 1/73 ; G03C 1/76 ; G03F 7/12 ; C08J 3/28 ;
U.S. Cl.
CPC ...
G03C 1/725 ; G03C 1/73 ; G03C 1/76 ; G03F 7/12 ; C08J 3/28 ;
Abstract
A photopolymerizable composition for making screen printing stencils. The composition comprises polyvinyl alcohol having at least one photocrosslinkable group appended thereto. At least one metal salt, wherein the metal is selected from: aluminum, zinc, chromium, zirconium, titanium, tin or iron, is added to the composition. The metal salt is used to improve water resistance of a screen printing image that is prepared from the photopolymerizable composition.