Coated metal pipe
AssigneeToyo Soda Manufacturing Co., Ltd.
InventorsMasaru Uemura, Hitoshi Kuroki, Nobuhiro Echida, Yujiro Kosaka, Kanji Otomo
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Abstract
A coated metal pipe which comprises a pipe coated with a composition comprising 5-30 wt parts of ethylene-vinylacetate copolymer having a vinylacetate content of 15-40 wt% and a melt index of 1-1,000 g/10 min; 2-20 wt parts of low molecular weight oxidized polymer of polypropylene or propylene-ethylene copolymer; 5-40 wt parts of styrene butadiene copolymer; 5-50 wt parts of a tackifier and 10-80 wt parts of asphalt.
Claims16
A coated metal pipe which comprises a pipe coated with a composition comprising 5-30 wt parts of ethylene-vinylacetate copolymer having a vinylacetate content of 15-40 wt% and a melt index of 1-1000 g/10 min;
- 2-20 wt parts of low molecular weight oxidized polymer of ethylene-vinylacetate copolymer, polypropylene or propylene-ethylene copolymer;
- 5-30 wt parts of styrene-butadiene copolymer;
- 5-50 wt parts of a rosin tackifier and 10-80 wt parts of asphalt.
A coating for metal pipe which comprises 5-30 wt parts of ethylene-vinylacetate copolymer having a vinylacetate content of 15-40 wt% and a melt index of 1-1000 g/10min;
- 2-20 wt% parts of low molecular weight oxidized polymer of ethylene-vinylacetate copolymer, polypropylene or propylene-ethylene copolymer;
- 5-30 wt parts of styrene-butadiene copolymer;
- 5-50 wt parts of a rosin tackifier and 10-80 wt parts of asphalt.
Dependencies are inferred from the claim text.