ExxonMobil

About: ExxonMobil is a company organization based out in Irving, Texas, United States. It is known for research contribution in the topics: Catalysis & Polymerization. The organization has 16969 authors who have published 23758 publications receiving 535713 citations. The organization is also known as: Exxon Mobil Corporation & Exxon Mobil Corp..

Heat sealable polyolefin films containing very low density ethylene copolymers.

Abstract: The invention provides laminar polyolefin film materials having a base film layer comprising a blend of an olefin polymer and up to about 30% by weight of at least one very low density copolymer of ethylene and a C 3 to C 20 alpha olefin comonomer copolymerizable with ethylene, said base layer having a heat sealable film layer present on one or both surfaces thereof comprising a very low density copolymer of ethylene and a copolymerizable C 5 to C 12 alpha olefin comonomer. The ethylene copolymer constituents of the film are characterized as having a density in the range of about 0.88 g/cm 3 to abut 0.915 g/cm 3 , a melt index in the range of about 0.5 dg/min to about 7.5 dg/min, a molecular weight distribution (M w /M n ) of about 1.5 to about 3.5 and an essentially single melting point in the range of about 60° C. to about 115° C., measured as a DSC peak T m . Films of this invention exhibit extremely good hot tack seal strength at temperatures in the range of from about 200° to 290° F. thereby rendering them extremely useful as packaging materials in high speed packaging operations.

System and method for processing financial transactions using multi-payment preferences

Abstract: The invention relates generally to retail transactions (Fig. 1) and, more particularly, to retail transaction systems and methods employing consumer preferences applicable to the transaction for goods and services (12). Methods, systems and processes are provided in which a customer is identified and associated with a customer profile and/or a method of payment corresponding to the customer (16). The customer profile may comprise customer preferences with regard to at least one method of payment (16). Based on the customer profile and/or other preference or transaction criteria, a preferred method of payment may be determined for a specific transaction (14). The provided methods, systems and processes may be used merely to identify a customer or in combination with transaction payment (e.g., payment for goods, services, or other financial transaction). The methods, systems and processes may also be used in combination with a loyalty program with a specific merchant or an association of merchants participating in a combined customer loyalty program (15).

A photoluminescence study of poly(phenylene vinylene) derivatives: The effect of intrinsic persistence length

Abstract: We report the results of light scattering, absorption, excitation, and emission spectroscopy of three polyphenylene vinylene (PPV) derivatives; poly[2‐methoxy, 5‐(2’‐ethyl‐hexyloxy‐p‐phenylene‐ vinylene] (MEH‐PPV), poly[2‐butoxy, 5‐(2’‐ethyl‐hexyloxy‐p‐phenylene‐vinylene] (BEH‐PPV), and poly[2‐dicholestanoxy‐p‐phenylene‐vinylene] (BCHA‐PPV) in solution with p‐xylene. We find that increasing the size of the solubilizing side chains increases the intrinsic persistence length of the polyphenylene vinylene backbone and that this change in stiffness has dramatic effects on the photoluminescence of polyphenylene vinylene. We have determined the luminescence quantum efficiencies of the polyphenylene vinylene derivatives relative to a known standard, Rhodamine 6G, and find that the photoluminescence can be greatly enhanced by increasing the intrinsic stiffness of the polymer backbone. The stiffest polymer, poly[2‐dicholestanoxy‐p‐phenylene‐vinylene] (BCHA‐PPV), has a quantum efficiency of 0.66±0.05. The quantum e...