摘要:
The invention relates to a novel antibiotic delivery vehicle for impregnating bone cement wherein said vehicle is an antibiotic encapsulated liposome having a block co-polymer on its surface; a method for the manufacture of a bone cement impregnated with antibiotic or a mixture of antibiotics using said vehicle; and also a novel bone cement made therewith and/or thereby.
摘要:
The present invention discloses liquid cyclic phosphites of for example the formula where n is 1 or 2; when n is 1, R17 is straight or branched chain alkyl of 1 to 18 carbon atoms, when n is 2, R17 is —CtH2t— or —CH2CH2-T3-CH2CH2— where T3 is —S— or >N—R22 where R22 is straight or branched chain alkyl of 1 to 12 carbon atoms and t is an integer of from 2 to 6, R1, R2, R3, R4, R5 and R6 are independently hydrogen, methyl, ethyl, i-propyl, n-propyl, n-butyl, sec-butyl or t-butyl and R is hydrogen. Also disclosed is a stabilized composition comprising polyolefin and a present liquid cyclic phosphite and a process for the stabilization of polyolefin by incorporating therein or applying thereto a present liquid cyclic phosphite. The present liquid phosphite stabilizers are especially compatible with polyolefins.
摘要:
Polymers grafted with a compound of formula I, formula (I) wherein the general symbols are as defined in claim 1, have outstanding stability against oxidative, thermal, dynamic, light-induced and/or ozone-induced degradation [R1—SOmnR—SOp—R2. (I)
摘要翻译:用式I化合物(I)接枝的聚合物,其中通式如权利要求1所定义,具有优异的抗氧化,热,动态,光诱导和/或臭氧诱导的降解的稳定性, 公式描述=“在线公式”end =“lead”?> [R&lt; 1&lt;&lt;&lt;&lt;&gt;&lt; img id =“PRIVATE-USE-CHARACTER-00001” =“6.77mm”wi =“8.47mm”file =“US07160955-20070109-Brketclosest.TIF”alt =“私人使用字符Brketclosest”img-content =“character”img-format =“tif”/> sub> R 2 SO 2 -R 2。 (I)<?in-line-formula description =“In-line Formulas”end =“tail”?>
摘要:
This invention relates to a novel, technically advantageous process for the preparation of a mixture of alkylated phenothiazines and diphenylamines. Starting from diphenylamine, this is reacted with elemental sulfur in the presence of iodine, and the substance mixture of diphenylamine and phenothiazine is treated with an olefin in the presence of an acid catalyst.
摘要:
This invention relates to compounds which are suitable as ash-free antiwear additives and antioxidants, to lubricant compositions comprising said compounds as well as to their use. are particularly preferred. In the preferred compounds I′, R2 is isooctyloxycarbonylmethyl, R3 is isooctyloxycarbonylmethylthiomethyl and R4 is hydrogen; or R2 is tert-nonyl and R3 is tert-nonylthiomethyl and R4 is hydrogen; or R2 is isooctyloxycarbonylmethyl, R3 is hydrogen and R4 is isooctyloxycarbonylmethylthiomethyl; or R2 is tert-nonyl, R3 is hydrogen and R4 I is tert-nonylthiomethyl. In the preferred compounds II′, R2 and R2′ are isooctyloxycarbonylmethyl, R3 and R3′ are isooctyloxycarbonylmethylthiomethyl and R4 and R4′ are hydrogen; or R2 and R2′ are tert-nonyl, R3 and R3′ are tert-nonylthiomethyl and R4 and R4′ are hydrogen; or R2 and R2′ are isooctyloxycarbonylmethyl, R3 and R3′ are hydrogen and R4 and R4′ are isooctyloxycarbonylmethylthio; or R2 and R2′ are tert-nonyl, R3 and R3′ are hydrogen and R4 and R4′ are tert-nonylthiomethyl.
摘要:
The invention described novel compounds of formula wherein the general symbols are as defined in claim 1, as stabilisers for protecting organic materials, in particular polymers and lubricants, against thermal, oxidative or light-induced degradation.
摘要:
This invention relates to compounds which are suitable as ash-free antiwear additives and antioxidants, to lubricant compositions comprising said compounds as well as to their use. Compounds of formulae ##STR1## are particularly preferred. In the preferred compounds I',R.sub.2 is isooctyloxycarbonylmethyl, R.sub.3 is isooctyloxycarbonylmethylthiomethyl and R.sub.4 is hydrogen; orR.sub.2 is tert-nonyl and R.sub.3 is tert-nonylthiomethyl and R.sub.4 is hydrogen; orR.sub.2 is isooctyloxycarbonylmethyl, R.sub.3 is hydrogen and R.sub.4 is isooctyloxycarbonylmethylthiomethyl; orR.sub.2 is tert-nonyl, R.sub.3 is hydrogen and R.sub.4 I is tert-nonylthiomethyl.In the preferred compounds II',R.sub.2 and R.sub.2 ' are isooctyloxycarbonylmethyl, R.sub.3 and R.sub.3 ' are isooctyloxycarbonylmethylthiomethyl and R.sub.4 and R.sub.4 ' are hydrogen; orR.sub.2 and R.sub.2 ' are tert-nonyl, R.sub.3 and R.sub.3 ' are tert-nonylthiomethyl and R.sub.4 and R.sub.4 ' are hydrogen; orR.sub.2 and R.sub.2 ' are isooctyloxycarbonylmethyl, R.sub.3 and R.sub.3 ' are hydrogen and R.sub.4 and R.sub.4 ' are isooctyloxycarbonylmethylthio; orR.sub.2 and R.sub.2 ' are tert-nonyl, R.sub.3 and R.sub.3 ' are hydrogen and R.sub.4 and R.sub.4 ' are tert-nonylthiomethyl.
摘要:
The present invention relates to novel liquid phenolic antioxidants, to organic materials stabilized with said compounds against thermal, oxidalive and/or actinic degradation, and to the use of said novel compounds as stabilizers.
摘要:
Compositions comprising compounds of formula ##STR1## wherein the radicals R and R.sub.1 to R.sub.5 are as defined in claim 1, are described. Some of those compounds are novel. They are suitable for the stabilization of organic materials.
摘要:
The invention relates to compounds of formula I ##STR1## wherein the general symbols are as defined in claim 1, as stabilisers for protecting organic materials against thermal, oxidative or light-induced degradation.