Process of products UV-stabilized polyester materials

Details Process of products UV-stabilized polyester materials Process of products UV-stabilized polyester materials

1983-01-19

1983-08-16

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528272, 528493, 528495, 528502, C08G 6316

Patent

active

043992650

ABSTRACT:
Polyesters are combined with UV-stabilizing substances in order to produce an end product, such as a film, sheet, ribbon or filament, by mixing polyester granules and the UV-stabilizing substance in powdered form at an elevated temperature such that at least the exterior surface of the polyester granules is soft, thereby to cause the powdered UV-stabilizing substance to adhere to the individual polymer granules, the granules with the powder adhering thereto are then dried, and they are then passed through an extruder or otherwise formed into an end product.

REFERENCES:
patent: 2818400 (1957-12-01), Forster
patent: 2910259 (1959-12-01), Naylor et al.
patent: 3126414 (1964-03-01), Spatz et al.
patent: 3322719 (1967-05-01), Peilstocker
patent: 3506610 (1970-04-01), Dressler et al.
patent: 3720635 (1973-03-01), Metzner et al.
patent: 3943105 (1976-03-01), Hermes
patent: 4161578 (1979-07-01), Herron
patent: 4179432 (1979-12-01), Molt
patent: 4271287 (1981-06-01), Shah

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