摘要:
It has been suggested that antistatic properties of fibers of polyamide could be improved by uniformly dispersing in the polyamide between about 1 percent and about 12 percent by weight of a predominantly branched, chain-extended propylene oxideethylene oxide copolymer based on a diamine. However, with incorporation of this antistatic additive in the polyamide, serious problems have been encountered in melt-spinning due to the frequent occurrence of "nubs" or enlarged places in the extruded polyamide filament. It has now been found that the occurrence of said nubs in the antistatic polyamide fiber can be greatly reduced by dispersing in the polymer about 0.5 to 12 percent by weight, based on the weight of the antistatic agent, of a phenol compound represented by the formula:
where R is an alkyl hydrocarbon group containing less than nine carbon atoms and R.sub.1 is a tertiary alkyl group containing at least four but not more than 12 carbon atoms. In comparative tests with antistatic yarns containing various commercially available hindered phenol compounds, the yarns of the present invention showed significantly greater breaking strength retention after exposure to light in standard tests.
摘要:
WHEREIN X'' HAS A VALUE FROM 1 TO 6 AND Y'' HAS A VALUE OF 1 TO 6 IS ADDED.
IN WHICH R is
IN WHICH X HAS A VALUE OF FROM 1 TO 6 AND Y HAS A VALUE OF FROM 6 TO 30; AND
AN ADDITIONAL SMALL PROPORTION OF A HINDERED PHENOL REPRESENTED BY THE FORMULAE:
AND AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIEPOXIDES AND COMPOUNDS WHICH YIELD THE FOLLOWING DIVALENT RADICALS:
A antistatic properties of fibers of polyamide could be improved by dispersing in the polyamide a small proportion of a reaction product of a tetrol compound represented by the formula:
摘要:
When from about 0.5 percent to about 5 percent of a polythiourea is coated on nylon fiber an improved dye fastness is achieved compared to untreated dyed nylon fiber when this fiber is exposed to ozone.
摘要:
An improved antistatic polyamide fiber is prepared by incorporating in the fiber about 1 to 12 percent by weight of a chain-extended propylene oxide-ethylene oxide copolymer based on ethylene diamine and about 0.5 to 8 percent by weight of a phenol compound represented by the formula:
WHERE R1 is hydrogen or an alkyl radical containing 1 to 12 carbon atoms, R2 is an alkyl radical containing 4 to 18 carbon atoms, and R3 is an alkyl radical containing 4 to 18 carbon atoms. A typical preferred chain-extended agent is 4,4''methylene-bis-(cyclohexyl isocyanate).
摘要:
IN WHICH X HAS A VALUE OF FROM 1 TO 6 AND Y HAS A VALUE OF FROM 6 TO 30; AND
IN WHICH A is
WHEREIN X'' HAS A VALUE FROM 1 TO 6 AND Y'' HAS A VALUE OF 1 TO 6.
WHERE R10 is a divalent radical having 1 to 20 carbon atoms derived from aliphatic, aromatic, cycloaliphatic, aromaticaliphatic, or heterocyclic hydrocarbons. However, with incorporation of this antistatic additive in the polyamide, serious problems have been encountered in melt-spinning due to the frequent occurrence of ''''nubs'''' or enlarged places in the extruded polyamide filament. It has now been found that the occurrence of said nubs in the antistatic polyamide fiber can be greatly reduced by dispersing in the polymer an additional small proportion of a hindered phenol represented by the formulas:
WHERE R6, R7, R8 and R9 are independently selected from R1, R2, R3, R4 or another monovalent hydrocarbon radical having 1 to 20 carbon atoms as defined for R1, R2, R3 and R4, provided that at least one of R1, R2, R3, R4, R5, R6, R7, R8 or R9 is R''; where n is 3 to 6, r and u are 2, 3, or 4; m, q are 0 to 100; m + q must be >5; w is 2, 3, or 4; p is 2 or 3; f, g, are 0 or 2 to 6; s and t are 0 or a whole number and s + t must be less than 100; a and b are whole numbers; D. the reaction product of A, B and/or C with at least one compound selected from I. DIEPOXIDES, AND II. COMPOUNDS WHICH YIELD THE FOLLOWING DIVALENT RADICALS
R1, R2, R3 and R4 are independently selected from R'' and monovalent hydrocarbon radicals having 1 to 20 carbon atoms derived from aliphatic, aromatic, cycloaliphatic, aromaticaliphatic, heterocyclic hydrocarbons or -(CrH2rO)m(CpH2pO)q-H; R5 is ethylene radical, R or a divalent radical selected from:
AND -(CrH2rO)s-(CuH2uO)t-CwH2w-; where R'', R'''', R'''''' and R'''''''' are
WHERE R is at least one of the alkylene difunctional radicals having 3 to 15 carbon atoms and a radical selected from
It has been suggested that an antistatic fiber of polyamide can be prepared by uniformly dispersing in the polymer a small proportion of at least one compound having a molecular weight above 1500 selected from the group consisting of compounds represented by the formulas:
摘要:
It has been suggested that antistatic properties of fibers of polyamide could be improved by uniformly dispersing in the polyamide between about 1 percent and about 12 percent by weight of a predominantly branched, chain-extended propylene oxideethylene oxide copolymer based on a diamine. However, with incorporation of this antistatic additive in the polyamide, serious problems have been encountered in melt-spinning due to the frequent occurrence of ''''nubs'''' or enlarged places in the extruded polyamide filament. It has now been found that the occurrence of said nubs in the antistatic polyamide fiber can be greatly reduced by dispersing in the polymer about 0.5 to 12% by weight, based on the weight of the antistatic agent, of a phenol compound represented by the formula:
In comparative tests with antistatic yarns containing various commercially available hindered phenol compounds, the yarns of the present invention showed significantly greater breaking strength retention after exposure to light in standard tests.
摘要:
It has been suggested that antistatic properties of fibers of polyamide could be improved by dispersing in the polyamide a small proportion of a reaction product of a tetrol compound represented by the formula: WHERE A'' is a difunctional radical from a hydrocarbon containing 1 to 30 carbon atoms. However, with incorporation of this antistatic additive in the polyamide, serious problems have been encountered in meltspinning due to the frequent occurrence of ''''nubs'''' or enlarged places in the extruded polyamide filament. It has now been found that the occurrence of said nubs in the antistatic polyamide fiber can be greatly reduced by dispersing in the polymer an additional small proportion of a hindered phenol represented by the formulae:
IN WHICH X HAS A VALUE OF FROM 1 TO 6 AND Y HAS A VALUE OF FROM 6 TO 30; AND
IN WHICH R is
WHEREIN X'' HAS A VALUE FROM 1 TO 6 AND Y'' HAS A VALUE OF 1 TO 6. When the term ''''alkyl'''' is qualified by the designation ''''(lower)'''', there is intended a branched or straight chain hydrocarbon of from 1 to about 6 carbon atoms. Preferably, the phenol complound is used with at least 0.1% by weight, based on the weight of the antistatic additive, of a sulfur compound of the formula:
WHEREIN R'''' is an alkyl radical containing 8 to 18 carbon atoms and n is 1 to 3. WHERE A, B, C, D, E, F, G, AND H ARE EACH A WHOLE NUMBER AND A is a difunctional radical from a hydrocarbon containing 1 to 13 carbon atoms, said tetrol compound having a molecular weight between about 4,000 and about 50,000, and at least one compound selected from the group consisting of diepoxides and compounds which yield the following divalent radicals:
摘要:
An improved antistatic polyamide fiber is prepared by incorporating in the fiber about 1 to 12 percent by weight of a chain-extended propylene oxide-ethylene oxide copolymer based on ethylene diamine and about 0.5 to 8 percent by weight of a phenol compound represented by the formula:
WHERE R1 is hydrogen or an alkyl radical containing 1 to 12 carbon atoms, R2 is an alkyl radical containing 4 to 18 carbon atoms, and R3 is an alkyl radical containing 4 to 18 carbon atoms. The preferred chain-extending agent is dimethyl terephthalate.
摘要:
It has been suggested that antistatic properties of fibers of polyamide could be improved by dispersing in the polyamide a small proportion of a reaction product of a tetrol compound represented by the formula:
WHERE A, B, C, D, E, F, G, AND H ARE EACH A WHOLE NUMBER AND A is a difunctional radical from a hydrocarbon containing 1 to 13 carbon atoms, said tetrol compound having a molecular weight between about 4,000 and about 50,000, and at least one compound selected from the group consisting of diepoxides and compounds which yield the following divalent radicals:
WHERE A'' is a difunctional radical from a hydrocarbon containing 1 to 30 carbon atoms. However, with incorporation of this antistatic additive in the polyamide, serious problems have been encountered in meltspinning due to the frequent occurrence of ''''nubs'''' or enlarged places in the extruded polyamide filament. It has now been found that the occurrence of said nubs in the antistatic polyamide fiber can be greatly reduced by dispersing in the polymer an additional small proportion of a hindered phenol represented by the formulae:
IN WHICH X HAS A VALUE OF FROM 1 TO 6 AND Y HAS A VALUE OF FROM 6 TO 30; AND
IN WHICH R is
WHEREIN X'' HAS A VALUE FROM 1 TO 6 AND Y'' HAS A VALUE OF 1 TO 6. When the term ''''alkyl'''' is qualified by the designation ''''(lower),'''' there is intended a branched or straight chain hydrocarbon of from 1 to about 6 carbon atoms. Preferably, the phenol compound is used with at least 0.1% by weight, based on the weight of the antistatic additive, of a sulfur compound of the formula:
WHEREIN R'''' is an alkyl radical containing 8 to 18 carbon atoms and n is 1 to 3.