Copolyether ester hot-melt masses

Details Copolyether ester hot-melt masses Copolyether ester hot-melt masses

1997-08-12

1999-02-09

Acquah, Samuel A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528272, 528301, 5283086, C08G 6366

Patent

active

058695940

ABSTRACT:
The invention relates to novel hot-melt masses consisting of a statistically built-up copolyether ester based on terephthalic acid and a mixture of aliphatic diols. Terephthalic acid is used as the single acid component and its molar amount, relative to the total amount of acid, is 100 molar %. A combination of butane diol, diethylene glycol, polyethylene and optionally triethylene glycol is present as diol component. The molar amount of butane diol is less than 75 molar %, the amount of diethylene glycol is between 5 and 60 molar %, the amount of triethylene glycol between 0 and 40 molar % and at least 2 and at the most 10 molar % of a higher-molecular polyethylene glycol component with a molar mass of 600-4000 g/mole is used, relative to the total acid amount and total diol amount of 100 molar % in each instance. The melting point of the copolyether ester adhesive masses is between 90.degree. and 190.degree. C.
The copolyetherester hot-melt masses can be used in the hot-melt method and for the known other powder coating methods.

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