Disclosed are compositions and methods for multilayer films, which, in one embodiment may comprise a core layer comprising at least 50 wt. % of high-density polyethylene. Further, the multilayer film may include a first skin layer comprising at least 80 wt. % of high-density polyethylene, and a second skin layer comprising either: (i) one or more low-density polyethylenes; or (ii) one or more polypropylene-based copolymers. The multilayer film may be oriented in at least one direction.

The present invention provides a process for recycling propylene-ethylene copolymers to obtain polymers having good optical and mechanical properties, as well as good processability. The invention further provides propylene-ethylene copolymer pellets obtained from the process, articles comprising or consisting of such pellets and the use of the propylene-ethylene copolymer pellets for injection molding applications. The process comprising the steps of (a) polymerizing propylene and ethylene in the presence of a single site catalyst in a continuous polymerization reactor under dynamic conditions, (b) collecting the resulting propylene-ethylene copolymer powders from step (a) to obtain a mixture (M) of propylene-ethylene copolymer powders having a MFR.sub.2 (ISO 1133, 230 C., 2.16 kg) in a raffle of from 1.5 to 80.0 g/ 10 min and an ethylene content in a range of from 1.0 to 4.0 wt. % based on the total weight of the mixture (M), (c) compounding said mixture (M) in an extruder in the presence of a radical initiator, and a clarifying agent in an amount of from 0.01 to 1.0 wt. %, based on the total weight of the mixture of propylene-ethylene copolymer powders, and (d) extruding the above mixture into pellets; wherein, in step a), the dynamic conditions are such that the ethylene content and the melt flow rate (MFR.sub.2) of the resulting copolymer gradually changes from a first predetermined ethylene content, E1, to a second predetermined ethylene content, E2, and from a first predetermined melt flow rate, MFR.sub.2-1, to a second predetermined melt flow rate, MFR.sub.2-2; wherein collecting the copolymer powders in step b) is started when the polymer produced in step a) has a first ethylene content, E1, and a melt flow rate MFR.sub.2-1, and collecting the copolymer powders in step b) is stopped when the polymer produced in step a) has a second ethylene content, E2, and a melt flow rate MFR.sub.2-2; and wherein said pellets obtained in step d) have (i) a MFR.sub.2 (ISO 1133, 230 C., 2.16 kg) in the range of from 20 to 120 g/10 in, (ii) a ratio of MFR.sub.2 pellets/MFR.sub.2 powder>1, (iii) an ethylene content in a range of from 1.0 to 4.0 wt %, (iv) a crystallization temperature Tc, determined by DSC according to ISO 11357-3:1999 in the range of from 100 to 125 C., and (v) a flexural modulus, determined in a 3-point-bending according to ISO 178 on injection molded specimens of 80104 mm, prepared in accordance with EN ISO 1873-2, of 850 MPa or more.

The present invention provides an aerospace or aircraft transparency which, generally, includes a cast acrylic having a conductive acrylic incorporating a conductive ionic polymer is cast thereatop and cured. In a second embodiment hereof, a stretchable acrylic formulation having a conductive polymer admixed therewith along with a minor amount of a cross-linking agent cast atop a ply of unfilled stretchable acrylic. The stack is simultaneously cured and then stretched.

The present disclosure provides a fully degradable Polyglycolic acid (PGA) composite packaging material comprises, by weight part, the following: PGA, polycaprolactone, poly(L-lactide--caprolactone), anti-blocking agent, slipping agent, flexibilizer, waterproofing agent, chitosan, reinforced fibers and the like. The present disclosure further provides a preparation method of the fully degradable modified polyglycolic acid composite packaging materials. The present disclosure has the following advantages. The packaging material of the present disclosure has good microbial degradation and hydrolysis. With complete biodegradation, it would result in end-products, water and carbon dioxide, which are environmentally friendly, non-toxic and pose no threat to human- and animal-health. The packaging material of the present disclosure has good mechanical properties, and can fully meet various application requirements of packaging materials. Inexpensive and environmental pollution-free fillers can be added without influence on mechanical properties. The cost can be effectively reduced. The preparation process is simple.

A battery separator comprises a co-extruded, microporous membrane having at least two layers made of extrudable polymers and having: a uniform thickness defined by a standard deviation of <0.80 microns (m); or an interply adhesion as defined by a peel strength >60 grams.

A method of repairing a pipe and/or a drain. The method involves covering a damaged section (103) of pipe (100) with a binder material (110) and a conductive/dissipative material (120). The conductive/dissipative material (120) is arranged in contact with, suitably within, the binder material (110) and functions to reduce static electrical charge build-up across the binder material, compared to the static charge build-up that may otherwise occur in a comparable section of binder material not having the conductive/dissipative material. The method may reduce the risk of a spark produced by a static electrical discharge across the binder material causing a flammable liquid within the pipe to ignite. The method may therefore provide a safer pipe repair, particularly wherein the pipe is normally used for transporting flammable liquids. A kit, composition, pipe and uses of a kit or composition to repair a pipe are also provided.

The present invention relates to a composition comprising at least one polymer system and at least one anti-agglomeration agent, the polymer system being selected from at least one thermoplastic polymer, the bulk density of the composition being more than 300 g/I. Furthermore, the present invention relates to a method for producing the composition according to the invention and its use.

A laminated foam sheet having a polyethylene resin foam layer and an antistatic polyethylene layer laminated on one or both sides thereof is produced by coextruding melts for respective layers, wherein the melt for the antistatic layer contains a polyethylene resin, an ionomer resin antistatic agent and a specific amount of volatile plasticizer blend containing an alcohol and a saturated hydrocarbon or a dialkyl ether. The antistatic layer of the obtained laminated foam sheet has specific morphology.

The present disclosure is directed to a film formulation that resulted in a substantially non-migratory cold seal release film with improved blocking resistance. Specifically, the multilayered biaxially oriented polypropylene film can include a core layer of polypropylene homopolymer; a first outer layer on one side of the core layer that can be suitable for sealing, printing, or coating; and a second outer layer on the opposite side of the core layer that is a blocking resistant layer comprising thermoplastic polymers which reduce blocking tendency.

Coextruded biaxially oriented sealable polyester films having at least one heat-sealable layer and at least one base layer. The heat-sealable layer has a sealing temperature on APET or PETG trays of at least 250 F. (121 C.) for seal strength of at least 1,500 g/in of film width, and a static and dynamic coefficient of friction of 0.28 or less. The heat-sealable layer includes one or more amorphous polyesters and one low melting point crystallizable polyester, such as polybutylene terephthalate (PBT).