Delaying the gelation of water soluble polymers

Details Delaying the gelation of water soluble polymers Delaying the gelation of water soluble polymers

1987-02-03

1989-04-18

Bowers, Jr., Charles L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524350, 524351, 524353, 524354, 524355, C08K 513

Patent

active

048228427

ABSTRACT:
A process is disclosed for delaying the rate at which water soluble polymers are gelled by an aldehyde and a phenolic compound and for increasing the mechanical strength of these gels which comprises contacting an aqueous solution of said water soluble polymer, aldehyde, phenolic compound, and water with from 0.004 to about 0.049 wt % of a transition metal ion. In addition, novel gelable compositions are disclosed.

REFERENCES:
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patent: 3502149 (1970-03-01), Pence, Jr.
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patent: 3926258 (1975-12-01), Hessert et al.
patent: 4039029 (1977-08-01), Gall
patent: 4191657 (1980-03-01), Swanson
patent: 4240505 (1980-12-01), Swanson
patent: 4244826 (1981-01-01), Swanson
patent: 4503912 (1985-03-01), Norton
patent: 4622356 (1986-11-01), Jarovitzky

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