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公开(公告)号：US20220186001A1
公开(公告)日：2022-06-16
申请号：US17432399
申请日：2020-02-17
摘要： The invention relates to a method for checking the silanization of pale-colored fillers, where a mixture comprising at least one silanized pale-colored filler, preferably silanized silica, and comprising at least one rubber is irradiated with ultrasound waves in a frequency range of 4 to 10 MHz, preferably of 5 to 7 MHz, and the signal strength of the ultrasound waves is determined after transmission through the rubber mixture, where the relative attenuation coefficient αrel of the rubber mixture in the frequency range of the ultrasound waves is determined, the standard deviation σ of the relative attenuation coefficient αrel is determined, and αrel and σ are used for detection of incipient crosslinking of the rubber mixture.
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公开(公告)号：US10988602B2
公开(公告)日：2021-04-27
申请号：US16072620
申请日：2017-01-19
IPC分类号： C08L21/00 , C08K3/36 , C09C1/30 , C08K9/06 , C09C3/00 , C08L9/06 , C08K3/013 , C08C19/25 , G01N29/34
摘要： The invention relates to a method of testing silanization, which permits inline control of the in situ silanization of light-colored fillers, especially precipitated silicas. This enables continuous in situ silanization in the production of rubber mixtures comprising silanized light-colored fillers, and representative control of the rubber mixture under production conditions. The process is additionally nondestructive and has a high tolerance for carbon black as an additional constituent of the rubber mixture.
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公开(公告)号：US10287425B2
公开(公告)日：2019-05-14
申请号：US14786726
申请日：2014-04-25
摘要： The present invention relates to a composition obtainable by mixing to incorporate at least one microgel (B) that has been crosslinked by means of free-radical generators photochemical by using a wavelength>0.1 μm and/or thermally and that contains hydroxy groups and that is based on polybutadiene-acrylonitrile copolymers (NBR) into polyvinyl chloride (PVC) in an extruder, to processes for production thereof and to use thereof for reproduction of transparent thermoplastically processable molded items, and also to molded items produced from the said compositions.
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