Patent ID: 6492287
Filing Date: 2002-12-10
Classification: B32B,D01F,D04H,Y10T

Abstract:
A nonwoven fabric with UV stability having a spunbonded fabric layer consisting of:a base resin selected from the group consisting of polypropylene and polyethylene; combined with melt processable additives; wherein said melt processable additives are a mixture of (i) at least two hindered amine light stabilizers, selected from the group consisting of: 1,3,5-Triazine-2,4,6-triamine,N,Nâ€²â€³-[1,2-ethanediylbis[[4,6-bis-[buty(1,2,2,6,6-pentamethyl-4-piperidinyl) amino]-1,3,4-triazin-2-yl]imino]-3,1 propanediyl]]bis[Nâ€²,Nâ€³-dibutyl-Nâ€², Nâ€³-bis(1,2,2,6,6-pentamethyl-4 piperidinyl); Dimethyl succinate polymer with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol; Poly[[6-[(1,1,3,3,-tetramethyl butyl)amino]-1,3,5-triazine-2,4-diyl][2,2,6,6-tetramethyl-4-piperidyl)imino] hexamethylene[2,2,6,6-tetramethyl-4-piperidyl)imino]]; and 1,6-Hexanediamine, N,Nâ€²-bis(2,2,6,6-tetramethyl-4-piperidinyl)-polymer with 2,4,6,-trichloro-1,3,5-triazine, reaction products with N-butyl-1-butanamine and N-butyl-2,2,6,6-tetramethyl-4-piperidinamine.; (ii) a processing aid selected from the group consisting of hydroxyl amines and a combination of hydroxyl amines and phosphites; and (iii) a carrier resin selected from the group consisting of polypropylene, polyethylene and a combination of polypropylene and polyethylene.