Solid state polymerization of polyester prepolymer

Details Solid state polymerization of polyester prepolymer Solid state polymerization of polyester prepolymer

1978-09-25

1979-08-21

Phynes, Lucille M.

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

Synthetic resins

Polymerizing in presence of inert solid masses so as to...

526 65, 526 67, 528272, 528309, C08G 6326

Patent

active

041654200

ABSTRACT:
The invention relates to an improvement in the solid state polymerization of polyester prepolymer comprising the use of low molecular weight prepolymer having an intrinsic viscosity ranging from about 0.1 to about 0.35 and essentially in the form of discrete spherical beads.

REFERENCES:
patent: 3405098 (1968-10-01), Heighton et al.
patent: 3463608 (1969-08-01), Barkey
patent: 3585259 (1971-06-01), Lefferts et al.
patent: 3817929 (1974-06-01), Buxbaum et al.
patent: 3969324 (1976-07-01), Berkau et al.

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