Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2007-07-31
2007-07-31
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S491000, C528S501000, C528S50200C, C528S503000, C264S013000, C264S005000, C264S345000
Reexamination Certificate
active
11012368
ABSTRACT:
The present invention is a process and apparatus for conserving loss of heat while forming and crystallizing polymer particles in a liquid. The cooling liquid quenches the polymer during particle molding to facilitate shaping. The cooling liquid cools the polymer particles not below a temperature that allows adequate crystallization to occur. Cooling liquid is quickly switched with a warming liquid, so the temperature of the polymer is in the crystallization range and the heat of crystallization self-heats the polymer to a higher temperature.
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Polymer Crystallization: The Development of Crystalline Order in Thermoplastic Polymers, J.M. Schultz, Oxford University Press, 2001, pp. 127-139.
Paschall James C
Truong Duc
UOP LLC
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