RESIN COMPOSITION AND ARTICLE
A resin composition, a cable or cable protection comprising or formed from said resin composition, a rotomolded article comprising or formed from said resin composition, an article of manufacture comprising or formed from said resin composition, for example, a plastic pallet, uses of said resin composition, use of a recycled mixed polyolefin stream comprising at least polypropylene and polyethylene in the manufacture of an article having an ESCR of at least about at least about 50 hours, a method of making an article having an ESCR of at least about at least about 50 hours, a method of making a resin composition, a method of making cable or cable protection, and a method of making a rotomolded article, a method of making a plastic pallet.
1 . A resin composition comprising:
at least 15% by weight polypropylene (PP),
at least about 40% by weight of non-PP polymer,
at least about 1% by weight of a compatabilizer comprising inorganic particulate material and a surface treatment agent on a surface of the inorganic particulate,
wherein the resin composition is substantially free of a peroxide-containing additive.
2 . A resin composition according to claim 1 , comprising less than 24% by weight polypropyiene.
3 . A resin composition according to claim 1 , comprising from 16-19% by weight polypropylene.
4 . (canceled)
5 . A resin composition according to claim 3 comprising about 17% by weight polypropylene.
6 . A resin composition according to claim 1 , wherein the polypropylene is recycled polypropylene.
7 . A resin composition according to claim 1 , wherein the non-PP polymer comprises from at least two different recycled sources.
8 . A resin composition according to claim 1 , comprising at least about 50% by weight polyethylene.
9 . A resin composition according to claim 1 , comprising from about 1-4% by weight carbon black.
10 . A resin composition according to claim 1 , comprising from about 1-20% by weight impact modifier.
11 . A resin composition according to claim 1 , comprising up to about 5% by weight antioxidant.
12 . A resin composition according to claim 1 , wherein the resin composition consists essentially of:
from 15% by weight to less than 20% by weight polypropylene,
from 50-75% by weight by weight polyethylene,
from 5-35% by weight compatabilizer,
from 0.1-4% by weight carbon black,
from 1-10% by weight impact modifier, and
up to 5% by weight of additional additives other than a peroxide-containing additive.
13 . (canceled)
14 . (canceled)
15 . A resin composition according to claim 1 , wherein 90-100% by weight of all polymer in the resin composition, other than impact modifier, is polypropylene and polyethylene.
16 . A resin composition according to claim 1 , wherein all of the polymer in the resin is recycled polymer.
17 . A resin composition according to claim 1 , wherein the surface treatment agent comprises a first compound having a formula (1):
A-(X—Y—CO) m (O—B—CO) n OH (1)
wherein
A is a moiety containing a terminating ethylenic bond with one or two adjacent carbonyl groups;
X is O and m is 1 to 4 or X is N and m is 1;
Y is C 1-18 -alkylene or C 2-18 -alkenylene;
B is C 2-6 -alkylene; and
n is 0 to 5,
provided that when A contains two carbonyl groups adjacent to the ethylenic group, X is N.
18 . A resin composition according to claim 17 , wherein the first compound is selected from ß-carboxy ethylacrylate, ß-carboxyhexylmaleimide, 10-carboxydecylmaleimide, 5-carboxy pentyl maleimide and ß-acryloyloxypropanoic acid.
19 . A resin composition according to claim 1 , wherein the compatabilizer comprises inorganic particulate material and an organic linker on a surface of the particulate, wherein the organic linker has an oxygen-containing acid functionality, and wherein the organic linker is a basic form of an organic acid.
20 . A cable or cable protection comprising or formed from the resin composition according to claim 1 .
21 . (canceled)
22 . A cable or cable protection according to claim 20 , having an Environmental Stress Crack Resistance (ESCR) of at least about 50 hours as may be determined in accordance with ASTM D1693-01 under Condition B.
23 . (canceled)
24 . A rotomolded article comprising or formed from a resin composition according to claim 1 .
25 - 31 . (canceled)
32 . A method of manufacturing an article, the method comprising extruding a resin composition according to claim 1 to form said article, wherein said article is a cable or a cable protection.
33 . (canceled)