摘要:
The present invention pertains to a reversibly thermochromic system comprising a substituted or an unsubstituted 6,11-dihydroxy-naphthacene-5,12-dione and a base and to a reversibly thermochromic composition comprising the reversibly thermochromic system and a carrier material and to novel substituted 6,11-dihydroxy-naphthacene-5,12-diones.
摘要:
A polyolefin composition comprising: a) from 66 wt % to 76 wt % of a propylene polymer having the fraction insoluble in xylene at 25° C., higher than 97 wt %, a polydispersity index lower than 4.5, and a melt flow rate (MFR) comprised between 6.0 g/10 min and 10.0 g/10 min, b) from 12 wt % to 20 wt % of a copolymer of ethylene and propylene, the copolymer having ethylene ranging from 40 wt % to 53 wt %, the polymer fraction soluble in xylene at 25° C. having an intrinsic viscosity value ranging from 2 to 4 dl/g; c) from 12% to 20%% of ethylene homopolymer; the sum of the amount of a)+b)+c) being 100; said composition having a value of melt flow rate (MFR) ranging from 3.6 to 8.0 g/10 min.
摘要:
Photochromic compositions are disclosed comprising a polymeric material, a photochromic dye, a hydroxyphenyl triazine UV absorber and, optionally, a further light stabilizer selected from the sterically hindered amines. These systems provide a reversible photochromic effect and show improved light stabilization and color fastness.
摘要:
A case for valve-regulated lead-acid battery comprising an olefin polymer composition comprising: A) From 60 wt % to 95 wt %, of a propylene homopolymer, or a copolymer of propylene containing 3% or less of ethylene, said homopolymer or copolymer having a Polydispersity Index (P.I.) value of from 4.6 to 10 and a fraction insoluble in xylene at 25° C., higher than 98 molar %; and B) from 5 wt % to 40 wt %, of a copolymer of propylene and ethylene containing from 30 wt % to 65 wt % of ethylene derived units; the sum A)+B) being 100.
摘要:
The instant invention relates to a process for removing ethene from biological sources using metal ion exchanged titanium zeolites. Further aspects of the invention are polymer compositions containing these zeolites, their use as efficient ethene removing additives and the modified titanium zeolites self.
摘要:
Photochromic compositions are disclosed comprising a polymeric material, a photochromic dye, a hydroxyphenyl triazine UV absorber and, optionally, a further light stabilizer selected from the sterically hindered amines. These systems provide a reversible photochromic effect and show improved light stabilization and color fastness.
摘要:
Polymeric material, containing a phenolic antioxidant and/or phenolic UVA and a colour former is unchanged by invisible light and may be coloured by irradiation with energy higher than visible light.
摘要:
The present invention relates to an UV absorbing polymer composition comprising effective amounts of (a1) a nanoparticulate oxide selected from oxides of the groups 4 and 12 of the periodic table, wherein the oxide is doped with In, Ga and/or Al, and (b1) a UV stabilizing/absorbing substance comprising a sterically hindered amine and/or a polymeric hydroxyphenyltriazine; or (a2) a nanoparticulate oxide selected from oxides of the groups 4 and 12, and (b2) a UV light stabilizing substance comprising a N-oxygen-substituted sterically hindered amine. Furthermore, the present invention relates to a polymer comprising said composition and the use of said composition as a UV absorber in polymers, particularly in agricultural films or packaging films. Finally, the present invention relates to a process for producing doped nanoparticulate metal oxides.
摘要:
Photochromic compositions are disclosed comprising a polymeric material, a photochromic dye, a hydroxyphenyl triazine UV absorber and, optionally, a further light stabilizer selected from the sterically hindered amines. These systems provide a reversible photochromic effect and show improved light stabilization and color fastness.
摘要:
The instant invention relates to a process for removing ethene from biological sources using iodine doped titaniumdioxide. Further aspects of the invention are polymer compositions containing this iodine doped titanium dioxide, its use as efficient ethene removing additive and the iodine doped titaniumdioxide itself.