05-08-2021 дата публикации
Номер: US20210238388A1
The invention relates to the use of at least one compound of the formula (1) herein R, Rand Rare the same or different and denote a C-C-alkyl as a hydrolysis stabilizer in polyester materials. 2. The use as claimed in claim 1 , wherein the compounds of the formula (I) are trimethyltrimellitate claim 1 , triethyltrimellitate claim 1 , tripropyltrimellitate claim 1 , tributyltrimellitate claim 1 , tripentyltrimellitate claim 1 , trihexyltrimellitate claim 1 , triheptyltrimellitate claim 1 , trioctyltrimellitate claim 1 , trinonyltrimellitate or tridecyltrimellitate.3. The use as claimed in claim 1 , wherein the compound of formula (1) is trimethyltrimellitate.4. The use as claimed in claim 1 , wherein the polyester in the polyester materials is polyethylene terephthalate claim 1 , polyethylene naphthalate claim 1 , polybutylene terephthalate claim 1 , polytrimethylene terephthalate claim 1 , dibenzoyl polyethylene terephthalate claim 1 , dibenzoyl polybutylene terephthalate claim 1 , dibenzoyl polyethylene naphthalate or mixtures thereof.5. The use as claimed in claim 1 , wherein the polyester in the polyester materials is polyethylene terephthalate claim 1 , polybutylene terephthalate claim 1 , polyethylene naphthalate claim 1 , polytrimethylene terephthalate or mixtures or co-polyesters thereof.6. The use as claimed in claim 1 , wherein the polyester in the polyester materials are aliphatic polyesters selected from the group consisting of polyhydroxybutyrate and its copolymer with polyhydroxyvalerate claim 1 , polyhydroxybutyrate-valerate claim 1 , and poly (ε-caprolactone).7. The use as claimed in claim 1 , wherein the proportion of the compound of formula (1) is from 0.1 to 20.0 wt.-% claim 1 , based on the weight of the stabilized polyester material.8. The use as claimed in claim 1 , wherein the proportion of the compound of formula (1) is from 1.0 to 10.0 wt.-% claim 1 , based on the weight of the stabilized polyester material.9. The use as claimed in claim 1 , ...
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