Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1983-04-05
1986-01-14
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 23, 528 37, 252328, C08G 7706
Patent
active
045646651
ABSTRACT:
Polysiloxanes of specified molecular weight and molecular weight distribution are effective anti-foam agents for reducing foaming in crude oil/gas separators. They are particularly useful in breaking microgas dispersions.
The polysiloxanes, preferably polydimethyl siloxane, contain not more than 10% by weight of components of molecular weight 50,000 and lower, at least 15% by weight of components of molecular weight 200,000 and higher and not more than 6% by weight of components of molecular weight 370,000 and higher, molecular weights being expressed as polystyrene equivalent molecular weights.
REFERENCES:
patent: 3660305 (1972-05-01), Michalski
patent: 4122247 (1978-10-01), Evans
patent: 4329528 (1982-05-01), Evans
patent: 4406817 (1983-09-01), Muller et al.
Callaghan Ian C.
Fink Hans-Ferdi
Gould Clive M.
Koerner Gotz
Patzke Hans-Jurgen
Marquis Melvyn I.
The British Petroleum Company p.l.c.
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