公开(公告)号：US09598566B2

公开(公告)日：2017-03-21

申请号：US15026741

申请日：2014-12-18

Applicant: Borealis AG

Inventor： Jouni Purmonen ,  Leif Leiden ,  Norbert Jansen ,  Tua Sundholm

IPC: C08L23/14 ,  F16L58/18 ,  F16L13/02

CPC classification number: C08L23/14 ,  C08L2203/18 ,  C08L2205/025 ,  C08L2207/02 ,  C08L2310/00 ,  F16L13/0272 ,  F16L58/181 ,  C08L23/16 ,  C08L51/06 ,  C08L23/12 ,  C08L23/0815

Abstract: Heterophasic polypropylene composition having an MFR2 (2.16 kg, 230° C.) of 3.0 to 7.0 g/10 min, determined according to ISO 1 133, and a Vicat A50 softening temperature of more than 110° C. measured according to DIN EN ISO 306 at 10 N on an injection molded test specimen with the dimensions of 80×10×4 mm3 and a heat rate of 50° C./h including a propylene random copolymer matrix phase (A), and an ethylene-propylene copolymer rubber phase (B) dispersed within the matrix phase, wherein the heterophasic polypropylene composition has a fraction soluble in p-xylene at 23° C. (XCS fraction), and a fraction insoluble in p-xylene at 23° C. (XCU fraction), said heterophasic polypropylene composition having a tensile modulus of 450 to 850 MPa when measured according to ISO 527-2 at 23° C. temperature with an elongation rate of 1 mm/min on injection molded test specimens type 1A prepared according to ISO 1873-2; and a normalized maleic anhydride index IMA equal to or less than 0.036 μm−1.

公开(公告)号：US11346490B2

公开(公告)日：2022-05-31

申请号：US15551603

申请日：2016-02-17

Applicant: J. VAN BEUGEN BEHEER B.V. ,  BOREALIS AG

Inventor： Edwin Welles ,  Leonard Van Beugen ,  Norbert Jansen

IPC: F16L58/16 ,  B32B27/32 ,  B32B7/12 ,  B32B15/085 ,  B32B1/08 ,  C09D123/06 ,  F16L58/18 ,  B32B27/08 ,  C09D123/10 ,  C09J123/08 ,  C09J123/10 ,  C08L23/22 ,  C08K3/36 ,  C09D5/08 ,  C09J5/06 ,  C09J7/00 ,  F16L58/10 ,  C08K3/22 ,  C08K3/26 ,  C09J123/06 ,  C09J123/20 ,  F16L9/02

Abstract: The present invention provides a metal pipe coated on at least a section of the metal pipe with a polyolefin coating system, wherein the system consists of the following layers: (a) optionally, a corrosion protective layer of a chromate, phosphate or other salt; (b) a polyolefin based adhesive, preferably in a thickness of 0.3-5 mm; (c) a PE or PP coating layer, preferably in a thickness of 1-10 mm; (d) optionally, an adhesion promoting layer between the polyolefin based adhesive and a PE or PP layer; wherein the polyolefin based adhesive contains an organic phase consisting of substantially saturated hydrocarbons, and wherein the adhesive contains amorphous polypropylene, ethylene-propylene copolymers or poly(iso)butylene (co)polymers, said adhesive being flowable when a pressure of 10 kgf/cm2 is applied, wherein the PE or PP coating is a continuous layer over the coated section, and wherein said polyolefin based adhesive adheres to both the metal pipe and to said PE or PP coating.