Patent ID: 6403787
Filing Date: 2002-06-11
Classification: C08B,Y10T

Abstract:
A mixture of cellulose alkyl ether derivatives having the structure:cellulose alkyl ether â€”Oâ€”R wherein cellulose alkyl etherâ€”O represents a substituted or unsubstituted cellulose alkyl ether unit and R is a substituent of a cellulose alkyl etherâ€”OH group having either the structureR=â€”Aâ€”Bâ€”or the structureR=â€”Bâ€”, wherein A is a linear polyether chain having the following structure:A=(â€”Dâ€”Oâ€”)n wherein D denotes a linear aliphatic branched or unbranched chain having 2 to 12 C atoms, O represents an oxygen atom and n is a number equal to or greater than 1, andB represents a substituted carbamic acid having the structure wherein E denotes a linear or branched aliphatic chain having 1 to 18 C atoms,with a disubstituted urea wherein said disubstituted urea is low-molecurlar weight symmetrical or asymmetrical aliphatic urea derivative having a chain length of 1 to 20 carbon atoms or a combination of said symmetrical and asymmetrical aliphatic urea derivatives.