Additive compositions and polymer compositions containing the same

a technology of additive compositions and polymer compositions, applied in the field of additive compositions, can solve the problems of ineffective nucleating agents in increasing the stiffness inconsistent shrinkage of the molded part produced,
US20180044503A1Inactive Publication Date: 2018-02-15MILLIKEN & CO
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
MILLIKEN & CO
Publication Date
2018-02-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

An additive composition comprises phosphate ester anions conforming to a specified structure, aromatic carboxylate anions, optionally cycloaliphatic dicarboxylate anions, aluminum (III) cations, sodium cations, optionally calcium cations, optionally lithium cations, and optionally zinc (II) cations. The anions are present in the additive composition in specified molar percentages. The cations are also present in the additive composition in specified molar percentages.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims, pursuant to 35 U.S.C. §119(e), priority to and the benefit of the filing date of U.S. Patent Application No. 62 / 373,703, which was filed on Aug. 11, 2016.TECHNICAL FIELD OF THE INVENTION

[0002] This application and the invention described herein is generally directed to additive compositions suitable for use in polymers. In one embodiment, the additive composition is a nucleating agent for polyolefins, such as polypropylene polymers.BACKGROUND

[0003] Several nucleating agents for thermoplastic polymers are known in the art. These nucleating agents generally function by forming nuclei or providing sites for the formation and / or growth of crystals in the thermoplastic polymer as it solidifies from a molten state. The nuclei or sites provided by the nucleating agent allow the crystals to form within the cooling polymer at a higher temperature and / or at a more rapid rate than the crystals will form in the virgin, non-nucl...

Claims

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