Use of phenothiazine derivatives to inhibit scale build up durin

Details Use of phenothiazine derivatives to inhibit scale build up durin Use of phenothiazine derivatives to inhibit scale build up durin

1989-10-20

1994-03-29

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 62, C08F 216

Patent

active

052985784

ABSTRACT:
Polyvinyl chloride reactor wall scale is reduced by conducting the polymerization in the presence of a phenothiazine dimer or higher oligomer made by reacting an aldehyde such as acetaldehyde or benzaldehyde with phenothiazine, or by reacting 2-acetylphenothiazine with formaldehyde.

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Chemical Abstracts (1983) vol. 98:144251d, Romanovich et al.

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