摘要:
A method for etching silicon-containing films is disclosed. The method includes the steps of introducing a vapor of a nitrogen containing etching compound into a reaction chamber containing a silicon-containing film on a substrate, wherein the nitrogen containing etching compound is an organofluorine compound containing at least one C≡N or C═N functional group; introducing an inert gas into the reaction chamber; and activating a plasma to produce an activated nitrogen containing etching compound capable of etching the silicon-containing film from the substrate.
摘要:
A process for the production of polymers by free radical polymerization, characterized in that there is added to the polymerization system one or more compounds of general formula (A), where R1 is hydrogen or a group capable of activating the vinylic carbon towards free radical addition; Y is OR2 or CH2X(R2)n, where R2 is an optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or optionally substituted saturated or unsaturated carbocyclic or heterocyclic ring; X is an element other than carbon selected from Groups IV, V, VI or VII of the Periodic Table or a group consisting of an element selected from Groups IV, V, or VI to which is attached one or more oxygen atoms; and n is a number from 0 to 3, such that the valency of the group X is satisfied and, when n is greater than 1, the groups represented by R2 may be identical or different.
摘要:
Compounds of formula (I) wherein the symbols have the meaning given in the specification, as well as processes for preparing the compounds (I), pesticidal compositions and synergistic mixtures comprising compounds (I), methods for the control of insects, acarids or nematodes by contacting the pests or their food supply, habitat or breeding grounds with a pesticidally effective amount of compounds formula (I), and a method for treating, controlling, preventing or protecting animals against infestation or infection by parasites which comprises orally, topically or parenterally administering or applying to the animals a parasiticidally effective amount of compounds of formula (I).
摘要:
Disclosed are mixed alkyl cyanoacrylate compositions which are specifically formulated for topical application onto intact or broken human skin, preferably without the addition of a plasticizing agent to the composition.
in which R¹ and R² independently represent a hydrogen atom, a lower alkyl group or a lower haloalkyl group, or together form a C₂-C₁₀ alkylene group optionally substituted with a halogen by reducing an oxidepyrrole of the formula (2):
in which R¹ and R² are the same as defined above, with hydrogen in the presence of a catalyst.
摘要:
Partially fluorinated compounds of specified formulas that are useful as chemical intermediates and monomers are disclosed. Partially fluorinated polymers prepared from one of these compounds are also disclosed.
摘要翻译:式H2C = CH-Rf-CH2CH2-Y(1)的部分氟化化合物其中Y独立地选自-CN,-CH 2 NH 2,-COOH,-CH 2 OH,-CH 2 N = C = O,-CONH 2, - CHO,-COCl和-COOR,其中R是C n H 2n + 1,n是1至10的整数,包括1和10; 并且R f是选自具有1至约40个碳原子并且包含0至约20个醚键的直链,支链,碳环和其混合物的全氟化二价有机基团,并且式Y min -CH 2 CH 2 -R f -CH 2 CH 2 -Y min(2)其中Y min独立地选自-CN,-CH 2 NH 2,-CH 2 OH,-CH 2 N = C = O,-CONH 2,-CHO,-COCl和-COOR,其中R为C n H 2n +1,n为1〜10的整数,包括1和10; 并且Rf是选自具有1至约40个碳原子并且含有0至约20个醚键的直链,支链,碳环和其混合物的全氟化二价有机基团,其可用作化学中间体和单体 披露。 还公开了由(2)制备的部分氟化聚合物。