Abstract: This invention relates to a new synthetic porous crystalline material, designated MCM-70, having, in its calcined form, the x-ray diffraction pattern of Table 1 above. The invention further resides in a method for preparing MCM-70 in borosilicate and in the conversion of organic compounds contacted with an active form of MCM-70.

Abstract: This invention provides a process for the synthesis of ZSM-12 using the N,N-dimethylhexamethyleneimine cation as a directing agent. The process enables ZSM-12 to be produced at silica/alumina molar ratios below 50 with little or no co-production of impurity phases. Small crystal forms of ZSM-12 can also be produced using the process of the invention.

Abstract: A metallized multilayer film structure includes a core layer of a film-forming polyolefin having a first side and a second side. A metal receiving skin layer may be disposed on the first side of the core layer. A metal layer may be deposited on the surface of the metal receiving skin layer opposite the core layer. A topcoat layer may be disposed on the surface of the metal layer opposite the metal receiving skin layer. A polymer skin layer may be disposed on the second side of the core layer. The film structure may optionally include one or more tie layers. The film structure may also optionally include a primer layer interposed between the topcoat layer and the metal layer. The present metallized multilayer film structure may be suitable for use as a monoweb to package product as opposed to being used in a lamination. The film structure exhibits superior scratch resistance and resistance to other types of damage. The film structure may be directly surface printed and then used to directly package product.

Abstract: A multi-layered thermoplastic label comprising: a core layer comprising high density polyethylene (HDPE) wherein said core layer has a first side and a second side; a first skin layer comprising a thermoplastic material wherein said skin layer has a first side and a second side and the second side of the first skin layer is adjacent to the first side of the core layer; wherein said thermoplastic label is oriented in at least one direction.

Abstract: A method for producing an improved coextruded polymeric film is disclosed. First, a base layer containing a polymeric matrix and at least one additional layer on at least one side of the base layer are coextruded. If the coextruded polymeric film is to be opaque, the base layer also contains at least one cavitating agent. Next, the coextruded multi-layer film is cooled. Finally, the coextruded multi-layer film is oriented in at least the machine direction (MD). At least the base layer of the coextruded polymeric film contains a fluoropolymer. The inclusion of the fluoropolymer in at least the base layer of the coextruded polymeric film provides a more even distribution of polymer flow through a die, which in turns leads to improved film gauge uniformity.

Abstract: Multilayer films are contemplated. Specifically, films containing 3, 4, 5, 6 or more layers. Anti-block will be included in a tie layer, contiguous to a skin layer and a core layer. The film may contain one or two skin layers. If there are two tie layers, the anti-block may be found in one or both. Metallized films made from the multilayer films are also contemplated. Use of the multilayer films in packaging, imaging, or labeling, is further contemplated.

Abstract: A back-up pad is provided over an anvil surface of a back-up plate, and between the anvil surface and a sealing surface of a sealing die, in an apparatus for forming seals between layers of film material. The back-up pad has a slip layer on one side thereof and a firm polymeric support layer on an opposite side thereof, the slip layer opposing the sealing face of the die so that the layers of film material pass between the sealing die and the back-up pad during seal formation. The polymeric support layer may have a Shore-A hardness of at least 10 at 20° C. and a dynamic loss tangent of less than 0.1 from 20° C. to 80° C. An example of a support layer is a polycarbonate pad, and an example of slip layer is a glass cloth coated with Teflon™. The back-up pad is particularly useful for forming lap seals in relatively thick film materials, such as laminated films having multi-layered films laminated together.

Abstract: A process and system is disclosed for removing sulfur from tail-gas emitted from a Claus sulfur recovery process. First, the tail-gas is oxidized so as to convert sulfur therein to sulfur oxides. Oxidized tail-gas is directed into an absorber where a solid absorbent absorbs substantially all the sulfur oxides thereon. After allowing sufficient time for a desired amount of sulfur oxides to be absorbed, absorption is ceased. Next, the solid absorbent containing the absorbed sulfur oxides is contacted with a reducing gas so as to release an off gas containing hydrogen sulfide and sulfur dioxide. Upon releasing sulfur from the solid absorbent, the solid absorbent is regenerated and redirected into the absorber. Sulfur in the off gas emitted by regeneration is concentrated to an extent sufficient for use within a Claus sulfur recovery process for conversion to elemental sulfur.

Abstract: A multilayer polymeric film comprises: (a) a core layer comprising a thermoplastic polymer; and (b) at least one skin layer comprising a thermoplastic polymer and a non-migratory polydimethylsiloxane block copolymer.

Abstract: A thermoplastic film having a substantially continuous, adherent coating on at least one surface, wherein the coating includes a polymeric binder and nano-scale particles. When the coating is formed on the surface of the film, the nano-scale particles form a barrier that substantially reduces the diffusion of moisture and oxygen. In preferred embodiments, the coating includes a polymeric binder and silicate particles formed on a base substrate layer that includes a polyolefin selected from the group consisting of homopolymers, copolymers, and terpolymers of propylene, ethylene, butylene, and blends thereof.

Abstract: A cationically stabilized emulsion polymer is disclosed which comprises a combination of at least one polymerizable monomer which is uncharged or positively charged in an aqueous solution having a pH between 1 and 8, polymerized in the presence of at least one water-soluble polymer having a number-average molecular weight greater than 5000 which comprises a moiety selected from the group consisting of primary amines, secondary amines, tertiary amines and quaternary ammonium salts. Coating compositions containing the cationically stabilized emulsion polymer and plastic films thus coated are also disclosed.

Abstract: The invention is directed to an oriented multi-layer polymer film with a core including a thermoplastic polypropylene matrix material. The core is substantially free of cavitations, voids, and fillers. Oriented multi-layer polymer films of the present invention include at least one opaque thermoplastic polymer layer on at least one side of the core which contains an opacifying pigment and at least one thermoplastic polymer skin layer on an outer most side of one of the opaque layer or the core. The film can be economically made, is from about 0.450 mil. to about 2 mils. thick and allows improved processing characteristics such as heat sealing, machinability, while also providing high whiteness, strength and stiffness.

Abstract: A thermoplastic film comprising a core layer comprising a polyolefin wherein the core layer comprises the interior of the film; and a first skin layer comprising a silicone grafted polymer, wherein the first skin layer is exterior to the core layer.

Abstract: There is provided a substantially binder-free catalytic molecular sieve which has been modified by being ex situ selectivated with a silicon compound. The ex situ selectivation involves exposing the molecular sieve to at least two silicon impregnation sequences, each sequence comprising an impregnation with a silicon compound followed by calcination. The catalyst may be used in a hydrocarbon conversion process, such as toluene disproportionation.

Abstract: An opaque, oriented polymeric film structure comprising: a core layer comprising a thermoplastic polymeric matrix material wherein the core layer has a first side and a second side, the core layer having a plurality of voids, substantially all or all of the voids being free from a void-initiating particle and at least some of the voids being interconnected with an adjacent void in the polymeric matrix material, the number of voids not containing a void-initiating particle being sufficient to impart a significant degree of opacity to the film structure, wherein the core layer comprises the interior of the film structure; and a first skin layer comprising a thermoplastic polymeric material and an effective amount of a high-melting incompatible additive to suppress cavitation in said first skin layer, wherein the first skin layer is exterior to the first side of the core layer.

Abstract: A process for controlling the MWD of a broad or bimodal resin in a single fluid bed reactor using a mixed catalyst composition containing a bimetallic catalyst and a make-up catalyst of at least one metallic component of the bimetallic catalyst. The bimetallic catalyst, which is formed with at least one metallocene of a transition metal, produces broad or bimodal molecular weight distribution polyolefin resin whose composition depends on the ratio of the concentration of the two catalyst components producing the HMW/LMW components. The make-up catalyst consisting of a single metal component is added in proportion necessary to make-up the deficiencies in the amount of the HMW/LMW component. The type of make-up catalyst added depends on whether increase of the HMW or LMW component produced by the bimetallic catalyst is sought. The mixed catalyst compostion may be fed into the reactor as a mixture or through separate catalyst ports of the reactor.

Abstract: Methods of producing polyethylene films having a desired water vapor transmission rate (WVTR) are provided. The methods include casting a polyethylene sheet which has a base layer of a polyethylene and a cavitating agent, and at least one layer of a WVTR-controlling material, and subsequently biaxially orienting the sheet to yield a film having the desired WVTR. The base layer has a porous microstructure and a WVTR substantially higher than the desired WVTR.

Abstract: The present invention relates to a matte surface film comprising: a base layer comprising a polyolefin; and a matte surface layer comprising a blend of high molecular weight high density polyethylene (HMWHD PE) with at least one incompatible polyolefin. The incompatible polyolefin may be ethylene propylene (EP) copolymers, ethylene butylene propylene (EBP) terpolymers or polypropylene (PP) homopolymers, such as metallocene catalyzed isotactic polypropylene (m-iPP) or metallocene catalyzed syndiotatic polypropylene (m-sPP). The matte surface layer may additionally contain a low molecular weight high density polyethylene or a medium molecular weight high density polyethylene. The film possesses an improved matte appearance and may be used for packaging and label applications.

Abstract: Polyethylene films having desired water vapor transmission rates (WVTR) and methods of producing the same are provided. The methods include adherently superimposing at least one layer of a WVTR-controlling material to a base layer including a polyethylene and a cavitating agent, and subsequently biaxially orienting the composite polyethylene sheet to yield a film having the desired WVTR. The base layer has a porous microstructure and a WVTR substantially higher than the desired WVTR.

Abstract: A uniaxially heat-shrinkable, biaxially oriented, multilayer film for use as a tobacco pack or carton overwrap having a polypropylene-containing core layer comprising at least 70 wt % of said multilayer film and at least one polyolefin-containing skin layer adjacent said core layer is prepared by biaxially orienting a coextrudate and thereafter orienting said coextrudate by stretching 10 to 45% in the machine direction. The core layer contains isotactic polypropylene and a modifier which reduces the crystallinity of the polypropylene-containing core. Such modifiers can be selected from the group consisting of atactic polypropylene, syndiotactic polypropylene, ethylene-propylene copolymer, propylene-butene-1 copolymer, ethylene-propylene-butene terpolymer, polyethylene and linear low density polyethylene. The skin layer can be selected from the group consisting of polypropylene, ethylene-propylene copolymer, polyethylene, and ethylene-propylene-butene-1 terpolymer and contains silicone oil.