摘要:
Disclosed herein is an adhesive composition comprising: a random propylene polymer component having a heat of fusion of between 1 and 70 J/g and an mm triad tacticity index of at least 75%; and a functionalized polymer component comprising a C2-C20 olefin comprising at least 0.1 wt % of a functional group; wherein the adhesive composition has a T-Peel adhesion on a polar substrate at 20° C. of at least 175 N/m (1 lb/in) and a T-Peel adhesion on a non-polar substrate at 20° C. of at least 175 N/m Pa (1 lb/in) and where the polarity of the polar substrate is at least 0.10 units higher than the polarity of the non-polar substrate. Methods to produce the adhesive and articles comprising the adhesive are also disclosed.
摘要:
A composition comprising: (i) at least one low molecular weight polyolefin; (ii) at least one block copolymer obtainable by selectively hydrogenating a block copolymer having terminal polymeric blocks of a vinyl aromatic monomer and a mid-block prepared originally with an olefin and subsequently hydrogenated; (iii) at least one polypropylene; and (iv) at least one plastomer, wherein the plastomer is an ethylene based polymer having a density of 0.86 g/cc to about 0.910 g/cc or a propylene based polymer having a heat of fusion (Hf) of 70 J/g or less.
摘要:
This invention relates a composition comprising: (i) at least one low molecular weight polyolefin; (ii) a block copolymer obtainable by selectively hydrogenating a block copolymer having terminal polymeric blocks of a vinyl aromatic monomer and a mid-block prepared originally with an olefin and subsequently hydrogenated; and (iii) polypropylene; (iv) with the proviso that when (i) is a PAO having a molecular weight of between about 400 and 1000 g/mole, either: (a) (iii) is a homopolymer characterized by an MFR greater than 2 g/10 min, (b) (iii) is a copolymer; or (c) (iii) is a polymer or copolymer made by a metallocene catalyst; or (d) the composition does not contain calcium carbonate.
摘要:
This invention relates to a composition comprising a functionalized C3 to C40 olefin polymer comprising at least 50 mol % of one or more C3 to C40 olefins, and where the olefin polymer, prior to functionalization, has: a Dot T-Peel of 1 Newton or more on Kraft paper; an Mw of 10,000 to 100,000; and a branching index (g′) of 0.98 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 60,000, or a branching index of 0.95 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 100,000; and where the C3 to C40 olefin polymer comprises at least 0.001 wt % of a functional group. This invention further relates to blends of such functionalized polymers with other polymers including non-functionalized C3 to C40 olefin polymers as described above.
摘要:
Disclosed are rheology modifiers comprising compositionally disperse polymeric compositions and/or crystallinity disperse polymeric compositions that may be useful in modifying the rheological properties of lubrication fluids, and methods for making such compositions. The compositionally disperse polymeric composition are formed from at least two discrete compositions of ethylene copolymers. The crystallinity disperse polymeric composition are formed from ethylene copolymers having at least two discrete values of residual crystallinity.
摘要:
This invention relates to a composition comprising a functionalized C3 to C40 olefin polymer comprising at least 50 mol % of one or more C3 to C40 olefins, and where the olefin polymer, prior to functionalization, has: a) a Dot T-Peel of 1 Newton or more on Kraft paper; b) an Mw of 10,000 to 100,000; and c) a branching index (g′) of 0.98 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 60,000, or a branching index (g′) of 0.95 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 100,000; and where the C3 to C40 olefin polymer comprises at least 0.001 weight % of an functional group, preferably maleic anhydride. This invention further relates to blends of such functionalized polymers with other polymers including non-functionalized C3 to C40 olefin polymers as described above.
摘要:
Embodiments of the present invention relate to article comprising 1) a functionalized component, 2) tackifier, and 3) an olefin polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 5 mole % of ethylene having a Dot T-Peel of 1 Newton or more, a branching index (g′) of 0.95 or less measured at the Mz of the polymer; and an Mw of 100,000 or less; where the functional component is selected from the group consisting of functionalized polymers, functionalized oligomers and beta nucleating agents; and where the Gardner color of the adhesive does not change by more than 7 Gardner units when the adhesive has been heat aged at 180° C. for 48 hours as compared to the Gardner color of the unaged composition.
摘要:
Styrenic block copolymers are blended with propylene copolymers to provide polymeric compositions with an improved balance between processability and elasticity. The compositions have improved processability by facilitating the ease with which a rubbery material, usually difficult to melt process, can be processed at high line speeds, which in turn improves the formation of the composition into films or other articles, assisted by a desired level of melt elasticity, i.e., a high elastic extension and recovery.
摘要:
This invention relates to a composition comprising a functionalized C3 to C40 olefin polymer comprising at least 50 mol % of one or more C3 to C40 olefins, and where the olefin polymer, prior to functionalization, has: a) a Dot T-Peel of 1 Newton or more on Kraft paper; b) an Mw of 10,000 to 100,000; and c) a branching index (g′) of 0.98 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 60,000, or a branching index (g′) of 0.95 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 100,000; and where the C3 to C40 olefin polymer comprises at least 0.001 weight % of an functional group, preferably maleic anhydride. This invention further relates to blends of such functionalized polymers with other polymers including non-functionalized C3 to C40 olefin polymers as described above.
摘要:
This invention relates to a composition comprising a functionalized C3 to C40 olefin polymer comprising at least 50 mol % of one or more C3 to C40 olefins, and where the olefin polymer, prior to functionalization, has: a) a Dot T-Peel of 1 Newton or more on Kraft paper; b) an Mw of 10,000 to 100,000; and c) a branching index (g′) of 0.98 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 60,000, or a branching index (g′) of 0.95 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 100,000; and where the C3 to C40 olefin polymer comprises at least 0.001 weight % of an functional group, preferably maleic anhydride. This invention further relates to blends of such functionalized polymers with other polymers including non-functionalized C3 to C40 olefin polymers as described above.