| abstract |
The present invention has high curability in low-temperature treatment conditions, is excellent in storage stability, imparts excellent flexibility to fibers as a fiber treating agent, and combines compositions having excellent washing durability, that is, the present invention provides An oxygen-containing composition comprising: (A) at a molecular terminal or a side chain, having 70 to 98 parts by mass of an organopolysiloxane having a group represented by the following formula (1);n□n(wherein Rx is a divalent hydrocarbon group having 1 to 8 carbon atoms, a is an integer of 0 to 4, and Ry is independently a hydrogen atom, a monovalent hydrocarbon group having 1 to 10 carbon atoms or a fluorenyl group, and Ry represents a group; At least one of them is hydrogen); (B) has two or more isocyanate groups in one molecule, and 50% or more of the isocyanate groups are 2 to 30 parts by mass of block polyisocyanate blocked by a thermal dissociation blocking agent. |