PT products for special applications (Follow-up)

October 2009

Many of our American friends read the papers that we wrote and published on our website. Quite often we even get support letters and some questions are asked.

We suggest you have a thorough look at the papers published on the monthly "The Penetrant Professor", address as following:
http://www.met-l-chek.com/pages/penetrant_professorpag.html

In its November 2009 issue there is a comment on our own DPCNewsletter #017 issued in October 2009 which deals with PT products for special applications.

In The Penetrant Professor issue you may find a long list of American patents about PT which went nowhere:

• Slow-solubility inspection penetrant composition containing a solubility accelerator.

• Nonsurfactant remover composition for inspection penetrants.

• Method of regenerating a glycol-ether type inspection penetrant remover by solvent extraction.

• Inspection penetrant process using solvency-inhibited remover composition.

• Method of regenerating an inspection penetrant solvent.

• Inhibited pre-wash stripper composition for water-washable inspection penetrants.

• Open-loop water-washable inspection penetrant process.

• Method of recovering and re-cycling water-washable inspection penetrants.

• Method and means for improving flaw entrapment efficiency in water-washable inspection penetrant.

• Method and means of accelerating removal of background entrapments in the inspection penetrant process.

• Water-washable inspection penetrant employing mineral solvent and a fatty acid solubility promoter.

As you may summarise chemists, maybe only to justify themselves to their bosses, or at least to have their names registered, have many ideas ... quite close to frenzy!