Patent · US Active

In-line ultrasonic check for detecting the partial vulcanization of a rubber mixture in the in situ silanization of bright fillers

US12157820B2 · kind B2 · utility

0Cited by

6References

13Claims

0Family size

Assignee

LANXESS Deutschland GmbH · DE

Inventors

Andreas Schroeder · Weinheim, DE
Ludwig Graeff · Viernheim, DE
Lars Wawrzinski · Mannheim, DE
Juergen Schilling · Schwetzingen, DE

Key dates

Filing date	Feb 17, 2020
Grant date	Dec 3, 2024
Priority date	—
Expiry date	Sep 13, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/0251
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.