Polyester for heat shrinkable film and preparation method thereof
A heat-shrinkable film and polyester technology, applied in the direction of single-component polyester rayon, rayon manufacturing, textiles and papermaking, etc., can solve the problems of reducing polyester crystallinity, low shrinkage rate, and low shrinkage internal stress , to achieve the effect of reducing crystallinity, high shrinkage rate and high transparency
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[0038]Example 1-5 Polyester with heat shrinkable film contains components: terephthalic acid, ethylene glycol, amphiminyldylene terephthalic acid, neutral hemata, cellulose ester and double (3,5-di-tert-di Single ethyl-4-hydroxybenzoate monhaletate) calcium salts, weight percentages of each component and trimmed to ethylene glycol, such as Table 1. The addition of catalyst ethylene glycol titanium and ethylene glycol ruthenium during the preparation of thermal shrink films The weight of the polyester of the heat shrink film is shown in Table 1.
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[0039]Example 6-10 Polyester with a heat shrinkable film contains components: terephthalic acid, ethylene glycol, sunflower acid, hexanedate, cellulose ester and double (3,5-di-tert-butyl) 4-hydroxybenzoate monhaletate) calcium salts, weight percentage of each component and a trim of terephthalic acid to ethylene glycol, such as Table 2. The amount of the addition of catalyst ethylene glycol titanium and ethylene glycol ruthenium during the preparation of the preparation of the thermal shrink film is shown in the weight percent of the total amount of the polyester of the heat shrink film.
[0040]Example 1-5 Preparation of polyester for heat shrinkage film includes: ethylene glycol, ethylene terephthalic acid, ethylene glycol, amphimic acid, neitzylene glycol and concentration of 0.5% by weight according to Table 1 ratio The titanium oriel glycol solution is added to the slurry mix tank 1 for the slurry, and the esterification kettle 6 is entered by the slurry supply groove 2;
[0041]The...
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