Patent ID: 7589163
Filing Date: 2009-09-15
Classification: C08F,C08G,Y10S,Y10T

Abstract:
1. A method for producing a peel-treating agent comprising a reaction product of an aliphatic isocyanate having an aliphatic group of at least 8 carbon number with an ethylene/vinyl alcohol copolymer or polyvinyl alcohol as an effective component, wherein a bisurea form content in the reaction product is at most 3 wt %, which comprises adjusting a particle size of the ethylene/vinyl alcohol copolymer or polyvinyl alcohol to no larger than particles that would pass through a sieve of size 10 mesh, subjecting to a dehydration operation to reduce water content and then reacting the adjusted ethylene/vinyl alcohol copolymer or polyvinyl alcohol with the aliphatic isocyanate.