Abstract:
Additive compositions comprising an ethylene/vinyl acetate or propionate/vinyl branched carboxylate terpolymer and an ethylene-unsaturated ester copolymer improve the low temperature properties of fuel oils.
Abstract:
This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst of the invention provides for a supported mixed metallocene/non-metallocene catalyst useful in a process for polymerizing olefins.
Abstract:
Copolymers, and processes to make them, are provided which are derived from monomers comprising: a) one mono-olefin having a single Ziegler-Natta polymerizable bond; b) a second monomer having at least one Ziegler-Natta polymerizable bond; c) a third monomer having at least two Ziegler-Natta polymerizable bonds such monomer being: i) straight-chained and of less than six or at least seven carbon atoms; ii) other than straight chained; or iii) combinations thereof; such copolymer having: d) at least about one carbon-carbon unsaturated bond per number average molecule; e) viscous energy of activation (Ea) at least 1 kcal/mol greater than a copolymer having a linear backbone derived from same monomers, but excluding species having at least two Ziegler-Natta polymerizable bonds; f) crystallinity level of about 10 % to about 50 %; and g) Mz/Mw at least about 1.7. Such copolymers show enhanced melt processability and other attributes during end-product fabrication.
Abstract:
This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst of the invention provides for a supported metallocene catalyst which when utilized in a polymerization process substantially reduces reactor fouling and sheeting in a gas or slurry polymerization process, by using a surface modifier.
Abstract:
A grafted copolymer of an isomonoolefin and a para-alkylstyrene, e.g., isobutylene and para-methylstyrene, grafted with an unsaturated organic compound, such as a maleic anhydride, the grafted copolymer of less than 24,000 number average molecular weight. Derivatives based on nucleophilic reagents reacted with the grafted copolymer useful in oleaginous compositions such as lubricants and fuels and methods for preparing such derivatives are also provided, as are processes for preparing the grafted copolymer.
Abstract:
The invention is directed toward polymerizing or copolymerizing alpha-olefins either alone or in combination with one or more other alpha-olefins in the presence of a metallocene catalyst in a gas phase reactor having a fluidized bed and a fluidizing medium such that the fluidizing medium entering the reactor comprises a gas and a liquid phase.
Abstract:
A composite comprising four layers adhesively bonded together exhibits a balance of breathability, barrier, strength, comfort, and appearance properties, making the composite ideally suited for a variety of medical, hygiene and sportswear uses. The composite comprises internal webs of cotton (27) and a microporous film (25) flanked by surface webs of nonwoven material (23, 29).
Abstract:
Thermoplastic poly(phenylene ether) (PPE) compositions having improved impact strength and reduced modulus loss are disclosed. These compositions are based on a mixture of PPE and an elastomeric interpolymer of a C1 to C4 isomonoolefin, e.g. isobutylene, and a para-alkylstyrene comonomer, e.g. para-methylstyrene. The interpolymer may also contain benzyliques functional groups such as halogen.
Abstract:
This invention relates to decolorizing hydrocarbon resins by treating the resin while in solution with a decolorizing agent selected from hydrides of non-metal elements, alkyl-substituted hydrides of non-metal elements, and salts of certain metals with selected hydrides of non-metal elements or alkyl-substituted hydrides of non-metal elements.