Abstract UV absorbant high molecular polyamides having improved light stability are obtained when a 2-(2''-hydroxyphenyl)-benzotriazole compound which, in at least one side chain contains at least one condensable carboxyl group or at least one condensable aliphatically or cycloaliphatically bound amino group or condensable groups reacting in the same way which are derived from these carboxyl or amino groups is reacted at temperatures of 150*-350*C with polycondensable amide forming monomers or with polycondensates thereof to form polycarbonamides. UV absorbant high molecular polyesters having improved light stability are obtained if certain 2-(2''-hydroxyphenyl)benzotriazole compounds which, in at least one side chain of each of their molecules contain from one to two condensable aliphatically or cycloaliphatically found hydroxyl groups or condensable groups reacting in the same way which are derived from these hydroxyl groups are reacted at temperatures of 150*350*C with polycondensable monomers or with polycondensates thereof to form the said polyesters.
A linear polycarbonamide as defined in claim 1, wherein said moiety is of the formula
Claim 2
Dependent Claim
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A linear polycarbonamide as defined in claim 1, wherein said moiety is of the formula
Claim 3
Dependent Claim
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A linear polycarbonamide as defined in claim 2, wherein said moiety is of the formula
Claim 4
Dependent Claim
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A linear polycarbonamide as defined in claim 2, wherein said moiety is of the formula
Claim 5
Dependent Claim
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A linear polycarbonamide as defined in claim 1, wherein said moiety is of the formula
Claim 6
Dependent Claim
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A linear polycarbonamide as defined in claim 1, wherein said moiety is of the formula
Claim 7
Dependent Claim
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A synthetic linear film- and fiber- forming polycarbonamide of improved light stability having condensed therein as in integral part of the polycarbonamide chain from 0.1% to 10% by weight, based on the total weight of said polymer, a radical derived an ultraviolet absorbing agent of the formula
Claim 8
Dependent Claim
47 words
A synthetic linear film- and fiber-forming polycarbonamide of improved light stability having condensed therein as an integral part of the polycarbonamide chain from 0.1% to 10% by weight, based upon the total weight of the polycarbonamide, a radical derived from an ultraviolet absorbing agent of the formula