Process for crystallizing blends of polyethylene terephthalate a

Details Process for crystallizing blends of polyethylene terephthalate a Process for crystallizing blends of polyethylene terephthalate a

1997-06-12

1999-07-06

Short, Patricia A.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525444, C08L 6702

Patent

active

059198729

ABSTRACT:
Polyester blends of polyethylene terephthalate and polyethylene isophthalate coated with an alkylene carbonate such as ethylene carbonate or propylene carbonate crystallize more quickly and at lower temperature than uncoated pellets, reducing the tendency of the pellets to stick together during the crystallization process prior to solid-state polymerization.

REFERENCES:
patent: 2863854 (1958-12-01), Wilson
patent: 3888817 (1975-06-01), Georgoudis
patent: 4008206 (1977-02-01), Chipman et al.
patent: 4171422 (1979-10-01), Lazarus et al.
patent: 4327207 (1982-04-01), Lazarus
patent: 4348314 (1982-09-01), Lazarus et al.
patent: 4374961 (1983-02-01), Kudo et al.
patent: 4403090 (1983-09-01), Smith
patent: 4418188 (1983-11-01), Smith et al.
patent: 4424337 (1984-01-01), Smith et al.
patent: 4482586 (1984-11-01), Smith et al.
patent: 4551368 (1985-11-01), Smith et al.
patent: 4604257 (1986-08-01), Smith et al.
patent: 4643925 (1987-02-01), Smith
patent: 5314925 (1994-05-01), Brunell et al.
patent: 5523361 (1996-06-01), Tung
patent: 5563209 (1996-10-01), Schumann
Chemical Abstracts, vol. 82, No. 4, Jan. 27, 1975, Columbus, Ohio, US, Abst. No. 17805; Shima Takeo et al; "High-polymerization-degree polyester" XP002019271-See Abst. & JP 49/005, 917B (Teijin Ltd.) Feb. 9, 1974.

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