Method of controlling foam

Details Method of controlling foam Method of controlling foam

1993-06-25

1995-02-07

Shaver, Paul F.

Compositions

Water-softening or purifying or scale-inhibiting agents

252352, C11D 182

Patent

active

053873645

ABSTRACT:
Foam in an environment with free surface turbulence is controlled with a foam control agent which comprises (A) 5 to 90 parts by weight of an organopolysiloxane having at least 40% siloxane units with a substituent --Z.sub.z --R' wherein R' is a C.sub.9-35 alkyl group, Z is a linking group with silicon and z is 0 or 1, provided more than 70% by weight of its carbon content is due to the groups --Z.sub.z --R', (B) 0.1 to 30 parts by weight of a finely divided hydrophobic particulate material, (C) 5 to 95 parts by weight of a hydrocarbon oil and (D) 0 to 20 parts by weight of an organosilicon MQ resin.

REFERENCES:
patent: 3756052 (1973-09-01), Quaal et al.
patent: 4514319 (1985-04-01), Kulkarni et al.
patent: 4515704 (1985-05-01), Akred et al.
patent: 4618446 (1986-10-01), Haslop et al.
patent: 4749732 (1988-06-01), Kohl et al.
patent: 4793943 (1988-12-01), Haslop et al.
patent: 5017221 (1991-05-01), Legrow et al.
patent: 5045225 (1991-09-01), Aronson et al.

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