Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1991-03-18
1992-09-15
Robinson, Ellis P.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 354, 428 3691, 428463, 428522, 138 97, 138141, 138153, 138DIG7, 138 98, F16L 55162
Patent
active
051476975
ABSTRACT:
A polyvinyl choride resin pipe serves as an inner lining material for the existing pipes. The resin pipe is formed of a resin composition which comprises as a main component either a polyvinyl chloride having a degree of polymerization DP of 600 to 1,050, or a mixture of 40 to 60% by weight of a polyvinyl chloride having a lower average degree of polymerization DP.sub.L of 400 to 600 and 60 to 40% by weight of another polyvinyl chloride having a higher average degree of polymerization DP.sub.H of 1,050 to 1,350. The resin composition further comprises 3 to 25 parts by weight of a modifying agent blended with 100 parts by weight of the main component. The modifying agent is composed of MMA- and/or MBS-modifiers.
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Ijyuin Makoto
Nawata Shinichi
Tsuda Akihiko
Dye Rena L.
Robinson Ellis P.
Tsutsunaka Plastic Kogyo Kabushiki Kaisha
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