IPC 2013 : D01F 9/02 : of reaction products of rubber with acids or acid anhydrides, e.g. sulfur dioxide.

IPC2013 > D > D01 > D01F > D01F 9/00 > D01F 9/02[1] > of reaction products of rubber with acids or acid anhydrides, e.g. sulfur dioxide.
Notes[t] D01 - D07: TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
D SECTION D — TEXTILES; PAPER.
D01 NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING.
D01F CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS.
D01F 9/00 Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments.
D01F 9/02 · of reaction products of rubber with acids or acid anhydrides, e.g. sulfur dioxide.