Saudi Arabian Oil has patented a polymer blend with specific compositions of poly(ester-carbonate-carbonate) and poly(etherimide) to create a molded ASTM tensile bar with low haze. The patent emphasizes the importance of the ratio between the two polymers for optimal performance. GlobalData’s report on Saudi Arabian Oil gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Saudi Arabian Oil, AI assisted CAD was a key innovation area identified from patents. Saudi Arabian Oil's grant share as of February 2024 was 44%. Grant share is based on the ratio of number of grants to total number of patents.

Polymer blend with specific composition for low haze molded products

Source: United States Patent and Trademark Office (USPTO). Credit: Saudi Arabian Oil Co

A recently granted patent (Publication Number: US11926733B2) discloses a polymer blend comprising a poly(ester-carbonate-carbonate) and a poly(etherimide) in specific weight percentages and molecular compositions. The blend, when molded into a 0.125-inch thick ASTM tensile bar, exhibits a haze value of less than 25%. The patent highlights the importance of the weight ratio between the two polymers, with specific multiplication product thresholds based on the mole percent of ester units and high heat bisphenol groups in the poly(ester-carbonate-carbonate).

The patent further elaborates on the advantages of the polymer blend compared to individual polymers, including improved heat deflection temperature, glass transition temperature, strength, modulus, melt flow, and impact strength. The blend is designed to exhibit specific properties such as a single glass transition temperature, melt volume rate, heat deflection temperature, and flexural modulus within defined ranges. Additionally, molded samples of the polymer blend demonstrate characteristics like coefficient of thermal expansion, haze, transmission, and retention of weight average molecular weight after heating, meeting specific criteria outlined in the patent claims. The patent also mentions the inclusion of additives like fillers, flame retardants, and stabilizers, as well as specific chemical formulas for the ester units and bisphenol groups in the polymers, enhancing the overall properties of the blend.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.