Patent ID: 6204353
Filing Date: 2001-03-20
Classification: D06M,Y10T

Abstract:
A spinning finish composition for synthetic filament fibers containing a lubricant component having improved biodegradability, said lubricant component consisting of a block copolyester prepared from the blocks A) and B) whereinblock A) consists of a hydrophilic polyethylene glycol having a weight average molecular weight of 450 to 20,000,block B) consists of a hydrophobic diol selected from the group consisting of polypropylene glycols, polytetrahydrofurans, polycaprolactone diols, hydrogenation products of ricinoleic acid esters, and dimeric diols, and wherein said block A) and said block B) are interconnected with aliphatic C.sub.2-36 dicarboxylic acids, anhydrides thereof, or esters thereof with lower C.sub.1-8 alcohols, or carbonic acid diesters of lower C.sub.1-8 alcohols.