Preparation of polysiloxane block polymers and their use as foam

Details Preparation of polysiloxane block polymers and their use as foam Preparation of polysiloxane block polymers and their use as foam

1980-12-22

1983-08-02

Lieberman, Allan

Compositions

Water-softening or purifying or scale-inhibiting agents

252321, 252358, 525477, B01D 1904, C08G 7744, C08L 8310

Patent

active

043965245

ABSTRACT:
This invention is directed to a method of preparing block copolymers useful as foam inhibitors, which method comprises the steps of:

REFERENCES:
patent: 3113930 (1963-12-01), Chevalier
patent: 3235509 (1966-02-01), Nitsche et al.
patent: 3383327 (1968-05-01), Sullivan
patent: 3436439 (1969-04-01), Woods
patent: 3455839 (1969-07-01), Rauner
patent: 3560401 (1971-02-01), O'Hara et al.
patent: 3700400 (1972-10-01), Cuthbertson
patent: 3819745 (1974-06-01), Plante
patent: 3829386 (1974-08-01), Wegst et al.
patent: 3933672 (1976-01-01), Bartolotta et al.

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