Synthesis of alkyl ketene multimers (akm) and application...

Details Synthesis of alkyl ketene multimers (akm) and application... Synthesis of alkyl ketene multimers (akm) and application...

C - Chemistry, Metallurgy

07

D

C07D 305/12 (2006.01) D21H 17/17 (2006.01) D21H 21/16 (2006.01)

Patent

CA 2117318

Disclosed is a process for making fine paper that is sized under alkaline conditions with a 2-oxetanone sizing agent. The sizing agent is a mixture of alkyl ketene dimer and 2-oxetanone multimers of various molecular weights, at least 50% by weight of the 2-oxetanone compounds having at least two 2-oxetanone rings. The paper can be in the form of continuous forms bond paper, adding machine paper, and reprographic paper and can also be converted into envelopes. The paper exhibits levels of sizing comparable to those obtained with current alkyl ketene dimer and alkenyl succinic anhydride sizes, and gives improved performance in high speed converting and reprographic machines.

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