Highly stable sulfonated melamine-formaldehyde condensate soluti

Details Highly stable sulfonated melamine-formaldehyde condensate soluti Highly stable sulfonated melamine-formaldehyde condensate soluti

1987-02-12

1989-04-11

Ivy, C. Warren

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...

524 6, 524598, 524650, 528254, 528256, C08G 1230

Patent

active

048207667

ABSTRACT:
A highly stable melamine-formaldehyde condensate solution for use as superplasticizer additives for cement or the like is produced by condensing melamine and formaldehyde in an aqueous medium, sulfonating the melamine-formaldehyde condensate, further condensing and stabilizing the aqueous sulfonated melamine-formaldehyde condensate solution.

REFERENCES:
patent: 3827992 (1974-08-01), Aignesberger
patent: 3870671 (1975-03-01), Aignesberger
patent: 3941734 (1976-03-01), Aignesberger
patent: 3985696 (1976-10-01), Aignesberger
patent: 4316826 (1982-02-01), Laquerbe
patent: 4430469 (1984-02-01), Burge
patent: 4444945 (1984-04-01), Sheldrick
patent: 4677159 (1987-01-01), Lahalih

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