摘要:
The present invention discloses mono-, bis- and tris-nonylcyclohexylphosphite esters, polyolefin compositions stabilized against the deleterious effects of melt processing, heat aging and exposure to combustion products of natural gas which comprise the nonylcyclohexylphosphite esters as stabilizers, and a process towards stabilizing polyolefin compositions by incorporating in or applying thereto the nonylcyclohexylphosphite esters.
摘要:
The present invention relates to an ink jet ink, an ink jet recording material or an ink jet system comprising at least one compound selected from the group consisting of a) the dialkyl hydroxylamine stabilizers, b) the nitrone stabilizers and c) the amine oxide stabilizers. The present stabilizer compounds provide ink jet prints with outstanding light stability, gas fade stability and dark storage stability. The hydroxylamines are for example N,N-dihydrocarbylhydroxylamines of the formula R1R2N—OH, wherein R1 and R2 are independently benzyl, methyl, ethyl, octyl, lauryl, dodecyl, tetradecyl, hexadecyl, heptadecyl or octadecyl, or wherein R1 and R2 are each the alkyl mixture found in hydrogenated tallow amine. The nitrone and amine oxide stabilizers are for example nitrone and amine oxide analogues of the dialkylhydroxylamine stabilizers.
摘要:
4-(Substituted phenyl)-3,4-dihydro-2H-naphthalen-1-ones, which are useful as intermediates in the preparation of antidepressant agents, are conveniently prepared by reacting 1-substituted naphthalenes and an aromatic moiety in the presence of an acid catalyst. 4-(3,4-Dichlorophenyl)-3,4-dihydro-2H-naphthalen-1-one, which is useful as an intermediate in the preparation of the antidepressant sertraline, is conveniently prepared by reacting 1-naphthyl acetate and o-dichlorobenzene in the presence of an acid catalyst.
摘要:
Selected alkanolamine esters of acyclic phosphites are particularly effective as process stabilizers for polyolefins providing for melt flow stabilization and resistance to discoloration during said processing.
摘要:
Novel cyclic pyrophosphite of formula I ##STR1## are prepared from the corresponding 6-chloro and 6-oxo phosphepins or phosphocins. The cyclic pyrophosphites are effective process stabilizers for organic materials subject to thermal, oxidative or actinic induced degradation, particularly polyolefins and especially polypropylene.
摘要:
6-Chloro-2,4,8,10-tetrabutyl-dibenzo[d,f][1,3,2]dioxaphosphepin and related phosphorochlorites are prepared by reaction of an appropriate bisphenol with phosphorus trichloride in the presence of a catalytic amount of 1-methyl-2-pyrrolidinone in toluene followed by heating the solution and stripping off the hydrogen chloride formed by a flow of nitrogen.
摘要:
The amorphous solid modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite] is obtained by melting said compound and rapidly cooling the melt.The amorphous solid is an effective process stabilizer for organic materials, especially polyolefins and particularly polypropylene.
摘要:
The beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tertbutyl-1,1'-biphenyl-2,2'-diyl) phosphite] is obtained by crystallizing said compound from the melt at elevated temperatures.The beta crystalline form is an effective process stabilizer for polyolefins, particularly polypropylene.
摘要:
Substituted 1-oxy-4-acyloxypiperidines or 1-oxy-4-acylaminopiperidines of formula I ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen, alkyl or substituted alkyl, R.sub.5 is hydrogen, alkyl, cycloalkyl, allyl or benzyl, X is --O-- or --NE--, E is hydrogen, alkyl or cycloalkyl, A is an n-valent aliphatic or aromatic hydrocarbon radical, and n is 1 to 4 are effective in providing melt flow stabilization to polymeric materials during processing.
摘要:
The new crystalline modification of 1,1',1"-nitrilo{tri-2-propyl-tris[2,2'-ethylidene-bis(4,6-di-tert-butylphenyl)]phosphite} is obtained by crystallizing said compound from the melt at elevated temperatures.This crystalline form is an effective process stabilizer for polyolefins, particularly polypropylene.