Process for the manufacture of polymer solutions

Details Process for the manufacture of polymer solutions Process for the manufacture of polymer solutions

1971-08-10

1976-04-06

Lieberman, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 312N, 260 75NK, 260 775AA, C08G 1808, C08G 1812, C08K 510

Patent

active

039488470

ABSTRACT:
A process for manufacture of solutions of polymers of high molecular weight by carrying out a reaction in solution leading to formation of the polymer, wherein the reaction is carried out initially in the presence of only a portion of the total solvent to be used, until the viscosity of the solution approaches or exceeds the value finally desired, and thereafter the remainder of the solvent is added whilst reaction is still proceeding.

REFERENCES:
patent: 3365526 (1968-01-01), Wieden
patent: 3373143 (1968-04-01), Chilvers
patent: 3379670 (1968-04-01), Corradi
patent: 3428611 (1969-02-01), Brotherton
patent: 3463616 (1969-08-01), Corradi
patent: 3642703 (1972-02-01), Seizuki
Sainder & Frisch, Polyurethanes Chemistry & Technology Part II 475 U.S.P.O.

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