摘要:
The present invention relates to the use of specific inorganic Sn(IV) for the production of polyisocyanate polyaddition products from a) at least one aliphatic, cycloaliphatic, araliphatic and/or aromatic polyisocyanate, b) at least one NCO-reactive compound, c) at least one thermolatent inorganic tin-containing catalyst, d) optionally further catalysts and/or activators other than c), e) optionally fillers, pigments, additives, thickeners, antifoams and/or other auxiliary substances and additives, wherein the ratio of the weight of the tin from component c) and the weight of component a) is less than 3000 ppm when component a) is an aliphatic polyisocyanate and less than 95 ppm when component a) is an aromatic polyisocyanate, wherein as thermolatent catalysts cyclic tin compounds of formula I, II or III: wherein n>1, are used.
摘要:
The invention relates to the use of polyurethane sealing compounds for the production of light-fast compact or foamed polyurethane bodies or polyurethane urea bodies which have excellent mechanical and optical properties and especially a very high thermostability.
摘要:
An industrial truck comprises a plurality of wheels, each wheel comprising a hub and a cushion tire mounted thereon. The truck further comprises a sensor adapted to measure a temperature of a tread of one of the cushion tires and a control unit communicably coupled with the sensor and with at least one of a drive unit of the truck and a cooling unit associated with the tread.
摘要:
A module including a micro-electro-mechanical microphone is disclosed. One embodiment provides a substrate having a trough-shaped depression and a micro-electro-mechanical microphone. The micro-electro-mechanical microphone is mounted into the trough-shaped depression of the substrate.
摘要:
A plug connector component, in particular for a coaxial plug or an optical plug connector, comprises a substantially cylindrical housing made of an electrically conductive material and constituting an external contact. The plug connector component further comprises an insulating body provided in the interior of the housing and made of plastics, and at least one latching collar on an outside of the housing. The housing has at least one recess, the latching collar is made of plastics and the latching collar and the insulating body are connected in one piece with each other right through the recess.
摘要:
A hermetically sealed housing for power electronics includes a sheet metal tank, and an aluminum cover. The tank has a surrounding edge which is provided with a plurality of bending lugs, and the edge of the cover has a shoulder at which the bending lug rests, so that the cover is pressed against the edge of the tank and a hermetic sealing is obtained.
摘要:
For transmitting high currents, such as in the electrical system of a motor vehicle for example, a contact element is proposed which is rolled and stamped from sheet-metal material and which consists of a contact-making section, a conductor-connecting section and a fastening section with an overlapping sleeve. In the contact element, the sleeve is at a radial distance from the fastening section.