Jacquie said the propellant was petroleum based. I researched this. Isobutane is petroleum based. Dimethyl ether is made from coal. These are the most common used ones. Some are made from grain based propane. However the propellants are discharged into the air when they propel the product out of the can. They are not the product itself. That's why someone else said they had heard the temporary spray was a starch product. Other fabric glues are not a starch product and are not temporary, but are still composed of petroleum based ingredients. These products won't digest fabric either on the bottom of a sock or in a quilt sandwich, but a nontemporary glue won't wash out either.
Last edited by TanyaL; 02-29-2012 at 06:00 AM.