Abstract: Disclosed is an anticoagulant material comprising a polymer obtained from an ionically bonded composite synthesized from i) a basic compound having a copolymerizable functional group and ii) a heparin salt. Disclosed is also a process for preparing the anticoagulant material. The anticoagulant material of the present invention can maintain excellent anticoagulant properties or antithrombotic properties over a long period of time and is capable of being applied as a component material for various medical articles such as artificial internal organs and artificial blood vessels, and a process for preparing it.

Abstract: There are disclosed a body fluid purifying material which comprises a water-insoluble compound obtained by allowing one or more kinds of a polymeric compound having hydroxyl groups to react with a compound having at least one isocyanate group, and a method for purifying a body fluid which comprises using a water-insoluble polymeric compound obtained by allowing one or more kinds of a polymeric compound having hydroxyl groups to react with a compound having at least one isocyanate compound.

Abstract: A process for the recovery of a heavy metal which comprises:bringing a polymer having pendant groups of the formula:--CO--NH--NH--CO--COOMin which M is hydrogen, sodium or potassium, into contact with an aqueous solution containing a heavy metal to have the heavy metal adsorbed by said polymer;andhaving said heavy metal desorbed from the said polymer.

Abstract: A stabilized olefin polymer composition having resistance against deterioration caused by contact with such heavy metals as copper which comprises 100 parts by weight of an olefin polymer and from 0.001 to 5 parts by weight of an N-cinnamoyl-N'-acyl-hydrazine derivative is disclosed.

Abstract: A stabilized olefin polymer composition having resistance against deterioration caused by contact with such heavy metals as copper which comprises 100 parts by weight of an olefin polymer and from 0.001 to 5 parts by weight of an N,N'-dibenzoylhydrazine derivative is disclosed.

Abstract: A polyolefin composition containing a novel 2-pyridylthiozinc-oxide complex, hexakis(2-pyridylthio)tetrazinc monooxide, has resistance against thermal and oxidative deterioration, particularly against deterioration caused by contact with heavy metals. Various processes for the preparation of said complex are also disclosed.

Abstract: Novel N-(salicyloylamino)imides which can act as excellent stabilizers for polyolefins are disclosed. A process for the preparation of the same which comprises the reaction of salicyloylhydrazine with a cyclic acid anhydride is also disclosed.

Abstract: A stabilized polyolefin composition having resistance against deterioration caused by contact with heavy metals such as copper which comprises 100 weight parts of polyolefin and 0.001-5 weight parts of N-(salicyloylamino)imide is disclosed.