Isophthalate-based plasticizing composition and resin composition comprising the same

ES3078260T3Undetermined Publication Date: 2026-09-09LG CHEM LTD (100 00)
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Patent Information

Application Number
ES2021898571T
Authority / Receiving Office
ES · ES
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-11-24
Filing Date
2021-11-23
Publication Date
2026-09-09
Estimated Expiration
2041-11-23

AI Technical Summary

Technical Problem

Existing plasticizer compositions, such as di(2-ethylhexyl) terephthalate (DEHTP), suffer from high sol viscosity, slow absorption rate, poor migration resistance, and mechanical property degradation, while alternative solutions like tri(2-ethylhexyl) trimellitate or triisononyl trimellitate lead to plasticization efficiency loss or environmental issues.

Method used

A plasticizer composition comprising a mixture of dihexyl isophthalate derived from an isomer mixture of hexyl alcohol with di(2-ethylhexyl) terephthalate, optimized with specific ratios and branching, to improve tensile strength, elongation rate, and migration resistance, maintaining low sol viscosity and viscosity stability.

Benefits of technology

The composition achieves improved plasticization efficiency, tensile strength, and elongation rate with enhanced migration resistance and stability, addressing the limitations of conventional plasticizers.

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Abstract

The present invention is characterized by containing dihexyl isophthalate and di(2-ethylhexyl) terephthalate, wherein the dihexyl isophthalate has an alkyl group derived from a mixture of hexyl alcohol isomers. When the plasticizer is applied to a resin, it can maintain plasticizing efficiency, migration loss, and heating loss at equivalent or higher levels, and can improve its tensile strength and elongation.
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