Method for determining branch distribution of polymer

Details Method for determining branch distribution of polymer Method for determining branch distribution of polymer

1993-07-13

1994-10-11

Zitomer, Fred

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

Synthetic resins

Treating polymer containing material or treating a solid...

526348, 526352, 5263522, C08F 626, C08F21016

Patent

active

053548426

ABSTRACT:
A branch distribution of a crystalline polymer is determined by melting the polymer at a temperature sufficiently higher than the melting point thereof, then cooling the melted polymer to room temperature in such a manner that isothermal crystallization of the polymer is allowed to take place stepwise at intervals of 3.degree. C. or higher at least from near the upper limit of the melting point of the polymer, then raising the temperature to melt the crystals and determining a branch distribution from the melt behavior, using a thermal analyzer.

REFERENCES:
patent: 4668752 (1987-05-01), Tominari
P. J. Flory, Trans. Farad. Soc., 51, 848 (1955).
J. Varga, J. Thermal Anal., 10 (1976) 433-440.

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