Rayon , Rayoff...
The Flammable Fabrics Act of 1953 brought about a change in how clothing was manufactured and sold commercially. As a result of this legislation, clothing could no longer be made out of dangerously flammable textiles. In order for a textile to be made into clothing it needed to pass Consumer Product Safety Commission tests before it could be sold. Special regulations have been created to ensure that children’s sleepwear is made of flame retardant fabrics.
https://oureverydaylife.com/the-history-of-flame-retardant-clothing-12399351.html
The story that the name nylon came from combining the names of New York and London has been around for a long time – almost as long as nylon itself. It’s a good tale, and one with possibly even a little romance to it. Unfortunately, however, it’s not true