Process for cleaning production plants for polyester polyols

Details Process for cleaning production plants for polyester polyols Process for cleaning production plants for polyester polyols

2006-08-15

2006-08-15

Boykin, Terressa (Department: 1711)

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

Synthetic resins

From carboxylic acid or derivative thereof

C428S323000, C428S328000, C428S331000, C428S339000, C510S201000, C510S240000, C528S271000

Reexamination Certificate

active

07091304

ABSTRACT:
The present invention relates to a process for cleaning multi-product production plants for polyester polyols with a cleaning polyol. The cleaning polyol can be used as a raw material in the production of further polyols.

REFERENCES:
patent: 2364387 (1944-12-01), Peterson
patent: 5782989 (1998-07-01), Rueter
patent: 1 133 212 (1962-07-01), None
patent: 1 143 375 (1963-02-01), None
patent: 59 670 (1968-07-01), None
“Geothermal Steam For Glycol Plant”, International Geothermal Conference, Reykjavik, Sep. 2003, Session #8.

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