Silicone rubber quality control method

A resin composition with anatase-type and rutile-type TiO2 particles, controlled via Raman spectroscopy, addresses UV-C light degradation in medical device cables and tubes, ensuring robust resistance to UV-C and ultraviolet light.

JP7885632B2Active Publication Date: 2026-07-07PROTERIAL LTD
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Patent Information

Application Number
JP2022133976
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-08-27
Filing Date
2022-08-25
Publication Date
2026-07-07
Estimated Expiration
2042-08-25

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Abstract

To provide a quality management method for a resin composition in which TiO2 is added as an ultraviolet light shielding material in order to provide a resin composition having excellent resistance to UV-C light and resistance to ultraviolet light in a wide wavelength range.SOLUTION: A quality management method for a resin composition 1 comprises: a measurement step of irradiating the resin composition 1 with a laser to measure a Raman spectrum, where the resin composition containing first TiO2 particles composed of anatase-type TiO2 and second TiO2 particles composed of rutile-type TiO2; a determination step of determining a concentration ratio of the first TiO2 particles and the second TiO2 particles in the resin composition 1, based on the intensity of a first peak attributed to the lattice vibration of the anatase-type TiO2 and the intensity of a second peak attributed to the lattice vibration of the rutile-type TiO2 in the Raman spectrum.SELECTED DRAWING: Figure 8
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Citation Information

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