Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1982-07-06
1984-06-19
Phynes, Lucille M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
428337, 528289, 528292, 5283081, 5283085, 528324, 528325, C08G 6302
Patent
active
044554176
ABSTRACT:
A method of forming an amorphous crystallizable thermoplastic polymer composition. The polymer composition has a modulus of rigidity which decreases to a minimum value with increasing temperature and then begins to increase. The process includes heating polymer to below a temperature at which crystal formation occurs and form the polymer. The polymer composition is then heated to a temperature at which crystal formation can occur and be annealed. This process is useful to make articles having a thickness of from 0.127 cm (0.050 inches) to 1.27 cm (0.50 inches) such as sheets and tubes of the amorphous polymer and then reforming and annealing them.
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Stevenson Philip E.
Vanderkooi, Jr. Nicholas
Welgos Robert J.
Allied Corporation
Henry Patrick L.
Negin Richard A.
Phynes Lucille M.
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