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:
Jan. 20, 1998
Filed:
Nov. 25, 1996
Applicant:
Inventors:
Paul David Coleman, Sewell, NJ (US);
John Russell Robertson, Glen Mills, NJ (US);
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162135 ; 1621646 ; 427475 ; 427482 ; 4273899 ; 427391 ; 427395 ;
Abstract
A process is disclosed for strengthening and sizing paper which comprises the step of applying a composition comprising (a) an isocyanate and (b) an isocyanate-reactive component comprising at least one polyol having an ethylene oxide content of at least 1%, wherein said composition does not contain water to the paper by means of an electrostatic spraying device having a linear orifice.