ES247551A3 - Improvements in the preparation of polyesters and aromatic copolyesters (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in the preparation of polyesters and aromatic copolyesters (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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La Seda de Barcelona SA
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La Seda de Barcelona SA
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Publication date
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Priority to ES0247551ApriorityCriticalpatent/ES247551A3/en
Publication of ES247551A3publicationCriticalpatent/ES247551A3/en
Improvements in the preparation of aromatic polyesters and copolyesters, especially from aromatic dicarboxylic acid alkyl dihydroxide shades, characterized in that a metal and glycol compound is used as the catalyst for the polycondensation, said compound being obtained by heating a metal oxide with glycol. (Machine-translation by Google Translate, not legally binding)
ES0247551A1959-02-101959-02-10Improvements in the preparation of polyesters and aromatic copolyesters (Machine-translation by Google Translate, not legally binding)
ExpiredES247551A3
(en)
A procedure for the polycondensation of reaction products of dimethyl tereftalate and etilenoglycol (Machine-translation by Google Translate, not legally binding)