The Orthophthalate Story: By QCM
One article pertaining to Orthophthalate inks was written for QCM, an ink we use.
Plastisol vs. Water-based Ink for Textile Printing: by Mike Ukena
A lengthy in-depth technical article, written by industry expert and colleague, Mike Ukena of Union ink.
Orthophthalate Ink
This article was written by a well informed yet anonymous writer. Though written more for printers, we've included it here.
Here is an article about Water-based printing as the be all, the next best thing to, well, water. I found this on the web, undocumented. I tend to agree with about 80% of the content as far as my understanding goes on the subject, but I don't agree with the last two sentences that state, After a run of prints, screens can be cleaned with just water, and it can go down the drain, being no more harmful than mild household cleaning products. (Not exactly true) Water based inks are simply not toxic (I wouldn't drink it), do not contain lead or any heavy metals, nor do they contain any ozone-depleting chemicals (CFC's, HCFC's, etc) or volatile solvents. Maybe ammonia and formaldehyde are not heavy metals but there not good for the pipes, the sewer, the water system, or the bay. In this business it's hard to truly be an environmentalist. We've be trying to be green long before the term green meant what it means today. We try our best to be conscious, aware and caring for our environment but if we were truly environmentalists we could not be ink slingers. Maybe one day all the inks will be made from soy and people will be willing to pay for it. If it does happen the world will be a better place.

If you want soy ink, last time I checked there was a small company making some, somewhere in America for their own use. If you are interested in having your garments printed with soy inks let me know.