DL has been granted a patent for latex articles made from branched block copolymers and polyisoprene homopolymers. These materials, produced using specific polymerization techniques, enhance the properties of dipped goods like condoms and gloves, achieving high tensile strength and improved performance characteristics. GlobalData’s report on DL 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 DL, Polyeolefin resins was a key innovation area identified from patents. DL's grant share as of July 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
The granted patent US12043714B2 describes a film article composed of a latex material that includes a branched polyisoprene homopolymer. This homopolymer is characterized by a specific chemical structure, represented by the formula (C)m(R1O)3-mSi—Y—Si(R2O)3-n(C)n. Key components of this structure include polyisoprene blocks with a weight average molecular weight ranging from 400 to 1000 kg/mol, with R1 and R2 being either hydrogen or C1-C6 alkyl groups, and Y representing a C2-C8 alkylene group. The patent specifies that the branched polyisoprene homopolymer must have a coupling efficiency of at least 40%, and the resulting film article should demonstrate a tensile strength of no less than 20 MPa.
Further claims detail additional characteristics of the film article, including the sum of integers m and n, which should range from 3 to 6. The preferred configuration for Y is specified as —CH2CH2—, with R1 and R2 being hydrogen, methyl, or ethyl groups. Additionally, the weight average molecular weight of the C block can be further refined to a range of 500 to 700 kg/mol. The film article is also required to exhibit enhanced mechanical properties, such as an elongation at break of at least 500% and a tear strength of at least 15 kN/m, indicating its potential for applications requiring durable and flexible materials.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. 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.
