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US 4,536,530 AGranted
Water tree resistant compounds and polymer compositions containing the same
AssigneeNational Distillers and Chemical Corporation
InventorsAnthony Barlow, Melvin F. Maringer
Life of this patent
Estimating the term…
Abstract
Organophosphorus compounds having the general formula ##STR1## useful as water tree resistant additives for polymeric compositions.
Claims20
A polymeric composition having enhanced resistance to water treeing and being devoid of anti-tracking additive and inorganic peroxide and comprising an intimate admixture of:
- a polymeric component and
- an effective water treeing inhibiting amount of about 0.1 to 5% by weight, based on the weight of said polymeric component, of, as the sole antitreeing agent, a compound having the general formula:
- ##STR12## wherein X is selected from the group consisting of O, S, N and NR.sup.3, Y is selected from the group consisting of O, S, and NR.sup.3, R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkenyl, cycloalkenyl, and phenyl, R.sup.3 is hydrogen or alkyl of from 1 to 6 carbon atoms and wherein R.sup.1 and R.sup.2 may be taken with the carbon atom and Y substituent to which they are respectively bonded to form a ring, and
- with a first proviso that when X is O, S or NR.sub.3, n is 1, and when X is N, n is 2, and
- with a second proviso that said polymeric component is other than a polyurethane, and
- with a third proviso that said composition contains about 20 to 30% by weight of filler when said polymeric component is ethylene-propylene rubber or ethylene-propylene-diene monomer copolymer and said composition contains 0 to less than 10% by weight of filler when said polymeric component is other than said rubber or said copolymer.
3 more elements
A method of stabilizing a polymeric insulated electrical conductor against water treeing, said composition being devoid of anti-tracking additive, which comprises
- coating an electrical conductor with an insulating effective amount of a polymeric insulating composition, said composition comprising an intimate admixture of
- a polymeric component and
- an effective water treeing inhibitor amount of about 0.1 to 5% by weight, based on the weight of said polymeric component, of a compound having the general structure ##STR13## wherein X is selected from the group consisting of O, S, N and NR.sup.3, Y is selected from the group consisting of O, S and NR.sup.3, R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, alkyl, cycloalky, alkenyl, cycloalkenyl, and phenyl, R.sup.3 is hydrogen or alkyl of from 1 to 6 carbon atoms and wherein R.sup.1 and R.sup.2 may be taken with the carbon atom and Y substituent to which they are respectively bonded to form a ring, and
- with a first proviso that when X is O, S or NR.sub.3, n is 1, and when X is N, n is 2, and
- with a second proviso that said composition contains about 20 to 30% by weight of filler when said polymeric component is ethylene-propylene rubber or ethylene-propylene-diene monomer copolymer and said composition contains 0 to less than 10% by weight of filler when said polymeric component is other than said rubber or said copolymer.
2 more elements
A polymeric composition having enhanced resistance to water treeing and being devoid of anti-tracking additive and inorganic peroxide and comprising an intimate admixture of
- a polymeric component and
- an effective water treeing inhibiting amount of about 0.1 to 5% by weight, based on the weight of said polymeric component, of, as the sole antitreeing agent, a compound selected from the group consisting of:
- tris(2-ethoxyethyl)phosphate
- tris(2-propoxyethyl)phosphate
- tris(2-butoxyethyl)phosphate
- tris(2-phenoxyethyl)phosphate
- tris(2-acetoxyethyl)phosphate
- tris[2-(2-chloroethoxy)ethyl]phosphate
- tris(tetrahydrofurfuryl)phosphate
- tris(2-aminoethyl)phosphate
- tris(2-ethylaminoethyl)phosphate
- tris(2-diethylaminoethyl)phosphate
- tris(2-hydroxyethyl)phosphate
- tris(2-mercaptoethyl)phosphate
- tris(2-methylthioethyl)phosphate
- tris(2-ethoxyethyl)phosphorotrithioate
- tris(2-phenoxyethyl)phosphorotrithioate
- trifurfuryl phosphorotrithioate
- tris(2-mercaptoethyl)phosphorotrithioate
- tris(2-aminoethyl)phosphorotrithioate
- tris(2-hydroxyethyl)phosphorotrithioate
- N,N',N"-tris-(2-ethoxyethyl)phosphorictriamide
- hexa(2-hydroxyethyl)phosphorictriamide
- hexa(2-ethoxyethyl)phosphorictriamide
- hexa(2-tetrahydropyranylmethyl)phosphorictriamide
- hexa(2-ethylthioethyl)phosphorictriamide, and
- hexa(2-mercaptoethyl)phosphorictriamide, and
- with a first proviso that said polymeric component is other than a polyurethane, and
- with a second proviso that said composition contains about 20 to 30% by weight of filler when said polymeric component is ethylene-propylene rubber or ethylene-propylene-diene monomer copolymer and said composition contains 0 to less than 10% by weight of filler when said polymeric component is other than said rubber or said copolymer.
26 more elements
Dependencies are inferred from the claim text.