Patent ID: 6908976

Claim:
A method for making a stretchable fiber with a soft hand and good crock-fastness, color-fastness, abrasion resistance, and stain resistance, which comprises: contacting a cellulosic fiber with a graft initiator; contacting the cellulosic fiber with a composition comprising: a polymerizable silicon oil emulsion; a urethane prepolymer emulsion; and a second polymerizable prepolymer, wherein the composition is stable with less than 5% of the polymerizable material self-polymerizing at a temperature of between about 60° F. and 90° F. during storage over a period of at least 2 months; and forming a grafted copolymer onto the cellulosic fiber substrate, said grafted copolyrner comprising at least about 10% by weight of polymerized silicon oil.