PatentVote.com: Vote on your favourite invention!

Next ten patents ordered by date:
Thermoplastic mixtures suitable for foaming in the extrusion or injection molding process
Keto dioxolanes
ABS-formaldehyde novolak
Chemically modified polymers
Process for the manufacture of heat-curable synthetic resins which can be diluted with water and are suitable for the electrophoretic coating process
Purification of polymer dispersions with adsorbent carbon particles
Molding compounds
Adhesive composition
Novel polyetherimides prepared from tolane dianhydride or dichloroethylene diphenylene dianhydride
Polyamides having improved dyeability and thermal stability
Translate:
En
De
Es
Fr
It
Pt
Ja
Ko
Zh 

 

Title: Method of preparing resins containing sulfonic acid functionality involving oxidation of thiouronium salts with hydrogen peroxide

Abstract: Resins containing sulfonic acid functionality may be prepared by reacting a chloromethylated polymer matrix with thiourea and then oxidizing the resulting isothiouronium salt to the sulfonic acid in the presence of hydrogen peroxide, either directly or with the intermediate isolation of the thiol.


Do you think this is a good invention? Vote now:

 Votes so far: For:(0) Against:(0)
Other info:


Inventors: Clemens, David H. (Willow Grove, PA, US)
Lange, Raymond J. (Wheelersburg, OH, US)

Application Number: 540773
Filing Date: 1975-01-15
Publication_date: 1976-03-16
Assignee: Rohm and Haas Company (Philadelphia, PA)
Primary Class(es): 521/33 521/31
Other Classes:
US Patent Ref:
2559585Feb, 1946Beck et al.260/505.
2868738Jan, 1959Hwa260/2.
3670002Jun, 1972Sheng et al.260/505.

Other Refs:
Primary Examiner: Wong, Jr., Harry
Assistant Examiner: Kulkosky, Peter F.
Attorney: