Polymer scale preventive agent

Details Polymer scale preventive agent Polymer scale preventive agent

2005-06-14

2005-06-14

Cheung, William K. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C526S083000, C526S084000, C526S348000, C526S344000, C526S343000, C526S317100, C526S346000, C526S310000, C526S332000, C526S082000, C524S877000, C524S597000, C524S612000, C524S876000

Reexamination Certificate

active

06906129

ABSTRACT:
A polymer scale preventive agent for use in the polymerization of a monomer containing an ethylenic double bond is provided. The agent includes (A) a condensation reaction product obtained by reacting an aldehyde compound and a hydroxynaphthalene-based compound in the presence of a reducing agent, and (B) a polymer compound containing a nitrogen atom. This agent is capable of forming a coating with satisfactory scale prevention properties on inner wall surfaces of a polymerization vessel with a single-stage application, enabling the production process time to be shortened and the productivity and quality of polymeric products improved.

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