Telomers

Details Telomers Telomers

1992-05-22

1994-12-27

Nagumo, Mark

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525367, 5253278, 5253285, 5253298, 5253302, 5253268, 5253266, 5253282, 5253288, 5253289, 5253294, 5253295, 5253296, 5253273, 5253306, 5253333, 526193, 526208, 526233, 526287, 5263171, 526240, 5263185, 526271, 562 8, 562 24, C08F 800, C08F 2802, C08F 2006

Patent

active

053767314

ABSTRACT:
Phosphonic (co) telomers of the type described in U.S. Pat. Nos. 4,046,707 and 4,681,686 and European Patent Application 360746 may be produced by an aqueous process comprising (a) reacting hypophosphorous acid with a carbonyl compound which is preferably an aldehyde, a ketone or an imine, (b) reacting the product of (a) with an olefin or olefins in the presence of a suitable initiator especially a free radical initiator, and (c) converting the product obtained from (b) to a phosphonic (co) telomer, e.g., by reaction with hypochlorite. The (co) telomer products are useful as scale inhibitors in aqueous systems.

REFERENCES:
patent: 3539654 (1970-11-01), Pautrat et al.
patent: 4046707 (1977-09-01), Smith et al.
patent: 4681686 (1987-07-01), Richardson et al.
patent: 5073299 (1991-12-01), Cook
patent: 5077361 (1991-12-01), Hughes et al.
patent: 5294687 (1994-03-01), Blankenship et al.
Hawley's Condensed Chemical Dictionary, 11th Ed Van Nostrand Reinhold, New York, 1987, p. 854.
British Search Report Oct. 2, 1991.
Russian technical Journal Izv. Akad. Nauk. USSR 1989, 1390.
Partial translation of above Russian article.

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