Polyformaldehyde

/Polyformaldehyde
Polyformaldehyde 2016-12-06T05:35:22+00:00

Polyformaldehyde

   

The Russian chemist, Butlerov discovered a white brittle material derived from formaldehyde in 1859. Staudinger investigated formaldehyde polymers in the 1920s and their study did much to enhance understanding of polymers in general. He also found that the thermal stability of polyformaldehyde could be improved by chemical modification of the ends of the polymer chains, and this was crucial to the later development of this polymer.

In 1947, DuPont initiated a research program under Robert McDonald to study formaldehyde and its polymers. This culminated in the commercial production of polyformaldehyde under their tradename of Delrin in 1959.

It is a tough,translucent, white material which resembles nylon and polypropylene but is somewhat harder. Its solvent resistant properties coupled with a good dimensional stability enabled it to find use as gear wheels and dry-run bearings, and in other light engineering applications as a replacement for die-cast metals.