摘要:
The invention provides a composition comprising a resin processable at temperatures upto 160.degree. C. having incorporated therein a flame retardant amount of a salt formed by reaction between dimethyl methyl phosphonate, monomethyl methyl phosphonate or methyl phosphonic acid, and a compound of the general formula (I) ##STR1## in which X is 0 or S; R.sup.1 is H, alkyl with 1 to 4 carbon atoms, alkenyl of up to 4 carbon atoms, CN, CONH.sub.2 or NH.sub.2, R.sup.2 is H, alkyl with 1 to 4 carbon atoms or alkenyl of up to 4 carbon atoms or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring of up to 6 carbon atoms which may optionally contain another hetero atom and R is H, an alkyl group with 1 to 8 carbon atoms, an aryl group with 6 to 10 carbon atoms, a cycloalkyl group with 5 to 12 carbon atoms or a heterocyclic group with up to 9 ring carbon atoms, or, together with R.sup.1 forms an alkylene chain of 3 to 10 carbon atoms, or R is a group NHR.sup.3 wherein R.sup.3 is H, alkyl with 1 to 4 carbon atoms, alkenyl of up to 4 carbon atoms, CN, CONH.sub.2 or NH.sub.2 or together with R.sup.1 forms an alkylene chain of 2 or 3 carbon atoms, or R is a group. ##STR2## where R.sup.1 and R.sup.2 are as defined above and R.sup.4 is direct bond or an alkylene group having up to 8 carbon atoms or is an arylene group having 6 to 10 carbon atoms.
摘要:
New compounds have the formula I: ##STR1## wherein R is a C.sub.1 -C.sub.12 straight or branched chain alkyl residue, a C.sub.2 -C.sub.12 straight or branched chain alkenyl residue, a C.sub.5 -C.sub.12 cycloalkyl residue, a C.sub.6 -C.sub.10 aryl residue or a C.sub.7 -C.sub.12 aralkyl residue; and X is a C.sub.1 -C.sub.10 straight or branched alkylene residue, a C.sub.2 -C.sub.10 straight or branched chain alkenylene residue or a C.sub.6 -C.sub.10 arylene residue; as well as derivatives of the compounds of formula I; and enantiomers, racemic mixtures, and mixtures of diastereomers.The new compounds are useful e.g. as corrosion inhibitors in aqueous systems.
摘要:
A method of inhibiting corrosion of metal surfaces in contact with an aqueous system, comprising contacting the metal surfaces with a telomer compound having the formula I: ##STR1## in which M is hydrogen or an alkali or alkaline earth metal ion, an ammonium ion or a quaternised amine radical; and n is an average integer ranging from 1 to 60.
摘要:
A composition, in contact with a corrodable metal surface, comprising:a) an aqueous-based or oil-based system; andb) as an inhibitor for protecting the metal surface against corrosion, at least one compound having the formula I or II: ##STR1## in which R is C.sub.4 -C.sub.20 alkyl, C.sub.4 -C.sub.20 alkyl interrupted by one or more oxygen atoms, C.sub.4 -C.sub.20 alkenyl, C.sub.6 -C.sub.10 aryl, C.sub.7 -C.sub.15 alkaryl, C.sub.7 -C.sub.15 aralkyl or C.sub.5 -C.sub.12 cycloalkyl;R.sup.1, R.sup.2 and R.sup.3 are the same or different and each is methyl or, preferably, hydrogen;M is hydrogen, a metal ion, ammonium or substituted ammonium ion;a is 0 or 1;b is 0 or an integer from 1 to 6, preferably 0, 1, 2 or 3 especially 0 or 1; andc is an integer from 1 to 6; and/or at least one compound having the formula II: ##STR2## in which R, R.sup.3 and a are as defined above.
摘要:
A composition, in contact with a corrodable metal surface, which composition comprises:(A) an aqueous-based or oil-based system; and(B) as inhibitor for protecting the metal surface against corrosion, a mixture comprising at least one compound of formula I and at least one compound of formula II: ##STR1## wherein R is a monoalkylglycol ether of formula IIR.sub.3 [O(CH.sub.2).sub.m ].sub.p O(CH.sub.2).sub.m-1 -- IIIR.sup.1 is H, CO.sub.2 M or C.sub.1 -C.sub.4 straight or branched chain alkyl residue;R.sup.2 is H, C.sub.1 -C.sub.4 straight or branched chain alkyl residue -CH.sub.2 CO.sub.2 M or -CH.sub.2 CH.sub.2 CO.sub.2 M;R.sup.3 is C.sub.4 -C.sub.20 straight or branched chain alkyl residue, C.sub.6 -C.sub.10 aryl residue (optionally substituted by C.sub.1 -C.sub.15 alkyl residues), C.sub.5 -C.sub.12 cycloalkyl residue, or a C.sub.7 -C.sub.12 aralkyl group optionally substituted by C.sub.1 -C.sub.15 alkyl residues;n is a number from 0 to 20m is a number from 2 to 4p is a number from 0 to 20; andM is a metal ion, H or an optionally substituted ammonium ion.
摘要:
Flameproofing of aromatic polymers is achieved by adding a synergistic combination of (a) a phosphorus compound and (b) a compound of formula R(CH.sub.2 X).sub.n, wherein R is an aromatic or heterocyclic residue, X is a leaving group and n is at least 2. Preferred phosphorus compounds are esters of phosphoric acid. The flameproofed polymers may contain aromatic groups in the main chain or as side-groups, for instance styrene polymers and copolymers, aromatic polyesters, polycarbonates and polyphenylene oxides.
摘要:
Aromatic hydrocarbon oligomers of the formula(A).sub.a (--CH.sub.2 --).sub.b [--CH.sub.2 (OCH.sub.2).sub.m OCH.sub.2 --].sub.c (--CH.sub.2 X).sub.dwherein A is at least one aromatic hydrocarbon or heterocyclic residue, X is OH or a derivative thereof, a is 2 to 20 but equals b+c+1, b is 0 to 19, c is 0 to 19, d is 0 to 2a and m is 0 to 10, there being at least two (--CH.sub.2 X) groups per molecule, the group each --CH.sub.2 O--CH.sub.2 -- portion of the group counting as (--CH.sub.2 X) for this purpose, are suitable as non-volatile fire retardent agents in chlorine-containing aliphatic polymers, copolymers or polyblends, which contain an ester of an phosphorus acid.
摘要:
Flameproofing of aromatic polymers is achieved by adding a synergistic combination of (a) a phosphorus compound and (b) a compound of formula R(CH.sub.2 X).sub.n, wherein R is an aromatic or heterocyclic residue, X is a leaving group and n is at least 2. Preferred phosphorus compounds are esters of phosphoric acid. The flameproofed polymers may contain aromatic groups in the main chain or as side-groups, for instance styrene polymers and copolymers, aromatic polyesters, polycarbonates and polyphenylene oxides.
摘要:
Functional fluid composition comprising an ester of a phosphorus acid and a compound of the formula Ir(ch.sub.2 x).sub.n (I)in which R represents an aromatic hydrocarbon or heterocyclic containing residue, n is an integer of at least 2, and each X is the same or different and represents a leaving group, which composition may be used for a wide variety of purposes, for example in hydraulic machinery employed in foundries and mines, in hydraulic systems for aircraft, in turbines and as fluids in electrical equipment and in heat transfer devices.