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US 10,882,986 B2Granted
Pipe produced with a polymer composition comprising a polyolefin
AssigneeSabic Global Technologies B.V.
InventorMark Johannes Boerakker
Life of this patent
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Abstract
The invention relates a pipe for the transport of water with improved resistance to chlorinated disinfectants. The pipe is produced with a polymer composition comprising a polyolefin and styrene isoprene blockcopolymer.
Claims18
A pipe for the transport of water produced with a polymer composition comprising:
- a polyolefin and styrene isoprene block copolymer wherein the amount of styrene isoprene block copolymer in the composition is greater than zero to lower than 2.0 wt% relative to the total weight amount of the composition, wherein the styrene isoprene block copolymer consists of styrene blocks and isoprene blocks.
A pipe for the transport of water produced with a polymer composition comprising:
- (a) multimodal polyethylene;
- (b) styrene isoprene block copolymer consisting of styrene blocks and isoprene blocks;
- (c) polyphenolic compound comprising 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene;
- and/or
- (d) organic phosphite and/or phosphonate wherein the weight ratio (b):(c+d) ranges between 7:1 and 1:7;
- wherein the amount of styrene isoprene block copolymer in the composition is greater than zero to lower than 2.0 wt% relative to the total weight amount of the composition.
3 more elements
A pipe for the transport of water produced with a polymer composition comprising, based on the total weight of the composition:
- (a) greater than 95 wt% of a multimodal polyethylene;
- (b) 0.05 to 0.9 wt% of a styrene isoprene block copolymer which is a non-hydrogenated styrene-isoprene-styrene triblock copolymer consisting of styrene blocks and isoprene blocks;
- (c) a polyphenolic compound comprising 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene;
- and
- (d) an organic phosphite and/or a phosphonate wherein the weight ratio (b):(c+d) ranges between 7:1 and 1:7.
2 more elements
Dependencies are inferred from the claim text.