
1) Cellulose acetate 2) Cellulose triacetate
Found on
https://www.crosswordclues.com/clue/triacetate

A variant of acetate in which 92 percent or more of the hydroxyl groups are acetylated.
Found on
http://www.chezirene.com/articles/precostuming/pc110-glossary.html

A more luxurious man-made cellulose acetate fiber created by modifying cellulose. It has excellent drape, shape retention and dyes well. It is more crisp, less absorbent and less heat sensitive than acetate fibers. Resistant to moths and mildew. Moderate wrinkle recovery. Used for better dresses and separates.
Found on
http://www.encyclo.co.uk/local/22264

A man-made fiber made from regenerated cellulose. Differ from acetate in that a much higher percentage of the cellulose has been acetylated- not less than 92%. Used particularly for knitted fabrics which have elasticity with good return, are easily washed, dry quickly, and need little or no pressing. Does not wrinkle easily. Acetate or triacetate ...
Found on
https://www.encyclo.co.uk/local/22261
No exact match found.