Buffer tubes having reduced stress whitening

摘要

Disclosed are buffer tubes of various colors having reduced stress whitening while retaining compliance with standard color requirements. In this regard, each buffer tube includes a polymeric tube that typically has a small amount of titanium dioxide. Each buffer tube typically demonstrates color compliance with the EIA Standard EIA-359-A.

主权项

1. A brown buffer tube, comprising:
a polymeric tube that includes (i) at least about 80 weight percent homopolymer polypropylene and/or polypropylene copolymer and (ii) between about 100 and 10,000 ppm titanium dioxide; wherein, in conformance with the color specification defined in the EIA Standard EIA-359-A and with reference to the Munsell color system, the buffer tube has (i) a hue of 7.5R to 7.5YR, (ii) a value of 2.5 to 4.5, and (iii) a chroma of 4.5 to 8.