Abstract: Disclosed embodiments may include a method of separating plastic from fiber. The method may include providing a solution including a chemical and water. The method may include combining the solution with fiber to generate a fiber/chemical solution. The method may include agitating the fiber/chemical solution to generate an agitated fiber/chemical solution. The method may include draining the agitated fiber/chemical solution through a sieve thereby separating one or more plastic particles from a remaining fiber/water mixture.

Abstract: The present invention relates to a polyimide precursor composition, and a polyimide film manufactured using same. According to the present invention, since a polyimide film is manufactured from a mixture of a polyimide precursor having a structure that is advantageous to surface charge accumulation and a polyimide precursor having a structure capable of exhibiting high heat-resistant characteristics, a flexible device using the polyimide film as a substrate can have both improved charge accumulation characteristics caused by an electric field to be generated during the operation of a TFT device and heat high heat-resistant characteristics.

Abstract: A method for purifying a contaminated reclaimed HDPE is provided. The method comprises obtaining the contaminated reclaimed HDPE, extracting it with a solvent to produce an extracted contaminated reclaimed HDPE, and then dissolving it in the solvent to produce a first suspension comprising dissolved HDPE and suspended contaminants. The first suspension is settled to produce a second suspension comprising dissolved HDPE and suspended remaining contaminants, and the second suspension is purified by contacting it with solid media to produce a third suspension comprising purer HDPE. Finally, the purer HDPE is separated from the third suspension and it has natural-like optical properties.

Abstract: Disclosed is a preparation method for a polysiloxane powder filler. The method comprises: providing polysiloxane which contains at least 60 wt % of T unit, wherein T unit is equal to R1SiO3-, R1 is a hydrogen atom or an independently selected organic group comprising 1-18 carbon atoms; and performing heat treatment on the polysiloxane under inert gas atmosphere or vacuum conditions, wherein the heat treatment temperature is 250 to 750 degrees, such that silicon hydroxyl groups in the polysiloxane are condensed to obtain a polysiloxane powder filler having a true density greater than or equal to 1.33 g/cm3 and more preferably greater than or equal to 1.34 g/cm3. The polysiloxane powder filler obtained by the described preparation method has low inductivity, low inductivity loss and low radioactivity; and can be used for semiconductor packaging materials, circuit boards and intermediate semi-finished products thereof, and semi-cured sheets or copper clad laminates of high-frequency high-speed circuit boards.

Abstract: A resin composition of the present invention contains: a maleimide compound (A) having a transmittance of 5% or more at a wavelength of 405 nm (h-line); a particular carboxylic acid containing compound (B); and a photo initiator (C) having an absorbance of 0.1 or more at a wavelength of 405 nm (h-line).

Abstract: Ways of preparing a partially crystalline polycarbonate powder are provided that include dissolving an amorphous polycarbonate in a polar aprotic solvent to form a first solution of solubilized polycarbonate at a first temperature. The first solution is then cooled to a second temperature, the second temperature being lower than the first temperature, where a portion of the solubilized polycarbonate precipitates from the first solution to form a second solution including the partially crystalline polycarbonate powder. Certain partially crystalline polycarbonate powders resulting from such methods are particularly useful in additive manufacturing processes, including powder bed fusion processes.

Abstract: The invention provides chemical conjugates comprising a plurality of fluorescence quenching moieties conjugated to polymer and the use of such conjugates to quench the emission of fluorescence from emitters including macromolecular fluorescent emitters such as phycoerythrin.

Abstract: Adhesive formulations for forming a fluorinated poly(imide-phthalonitrile) thermoset polymer are provided. Such an adhesive formulation may comprise a fluorinated imide-phthalonitrile oligomer having Formula IV wherein R1 is an unsubstituted or substituted aryl group and does not comprise an ether group; R2 is an unsubstituted or substituted aryl group and does not comprise an ether group; at least one of R1 and R2 comprises a fluorine substituent; and n has a value of from 1 to 30.

Abstract: Provided is a poly(arylene ether ketone) resin which inhibits reactions such as molecular weight extension and crosslinking in a high-temperature molten state and which is excellent in melt viscosity stability and molding processability. The poly(arylene ether ketone) resin contains an alkylsulfonyl group represented by general formula (1). In the formula, R is an alkyl group containing one to four carbon atoms.

Abstract: A polyaryletherketone, PAEK, in the form of particles is a copolymer with at least 95 mole % repeat units of formula I, and repeat units of formula II, and a molar ratio I:II from 55:45 to 80:20. The PAEK has a melt viscosity, MV, from 0.35 to 0.55 kNsm?2 at 1000 s?1. The PAEK is of use in formation of components having high elongation at break when formed by selective sintering and melt-bonding of sequentially deposited layers of powder comprising the PAEK particles. Also provided are processes for making the PAEK particles, powders including them and their use and methods of their use in component formation.

Abstract: The invention relates to polymer nanoparticle and DNA nanostructure delivery compositions for non-viral delivery, and methods therefor. More particularly, the invention relates to polymer nanoparticle delivery compositions, such as reversible addition-fragmentation chain transfer (RAFT) polymer compositions, and DNA nanostructure delivery compositions, such as DNA origami compositions, for the delivery of more than one payload, or for the delivery of a nucleic acid construct payload of 3 kB or more, and methods therefor.

Abstract: A polyarylene ether sulfone comprising in polymerized form A) isosorbide, isomannide, isoidide or a mixture thereof and B) at least one nonsulfonated dihalodiaryl! sulfone (compound B) and C) at least one sulfonated dihalodiaryl sulfone (compound C), a process for its preparation and its use in the preparation of coatings, films, fibers, foams, membranes or molded articles.

Abstract: The present invention relates to relates to a polymer formulation for three-dimensionally (3D) printing an article by stereolithography, the formulation comprising a functionalized polymer. The invention further relates to lithographic methods to form 3D objects that incorporate the aforementioned polymer formulation.

Abstract: Superabsorbent fibers (SAF) in a feed stream is converted into soluble polymers in an extensional flow device. The total energy used to degrade the SAF into soluble polymers is less than about 50 MJ/kg SAF.

Abstract: Foam compositions are provided. The compositions are prepared from multi-functional acetoacetate esters and multi-functional amines or acrylates. The foam compositions can include one or more additives. The foam compositions can be used for home and commercial insulation, air sealing, sound proofing, structural improvement, and exterior roofing, among other applications. The foam compositions provide advantages of being isocyanate free and offer reduced exposure to isocyanate.

Abstract: A poly(etherimide) includes repeating units derived from polymerization of a biphenol dianhydride and an organic diamine. A method of making the poly(etherimide) includes contacting the biphenol dianhydride and the organic diamine under conditions effective to provide a poly(etherimide). The poly(etherimide) can be useful in a variety of articles, for example in an optoelectronic component.

Abstract: A devolatilizer (devo), which operates at a temperature (T) and at a pressure (P), for the separation of at least a portion of a solvent from a polymer-rich solution comprising the solvent and a polymer, and wherein the devolatilizer comprises at least the following components: A) a distributor, a heater, or a heater/distributor combination; B) a shroud (component B) located around some or all of the periphery of component A; and C) a gap (component C) located between the outer surface of component A and the inner surface of component B.

Abstract: A composition having a polymer-film composition having a compound having the structure: wherein: each R is independently selected; each R is a C1-20 alkyl moiety, C2-22 alkenyl moiety, C6-40 cycloalkyl moiety, C6-40 cycloalkylene moiety, C2-20 alkyl glycol ether moiety, C10-C16 linear alkyl alcohol moiety, or Y—OH moiety; each Y is a C2-40 alkylene moiety, C6-40 cycloalkylene moiety, C2-20 alkylene glycol ether, or a C3-40 alkylene lactone; m is an integer ranging from 1 to 100; x is an integer ranging from 2 to 1,000; and the polymer-film composition having an oxidized polymer-film surface.

Abstract: The present invention provides: a highly transparent optical member which is formed from a silicone resin or a silicone rubber, and which has less mass change and excellent heat resistance without causing contact faults, or deterioration or contamination of the surface of other members due to adhesion to an electronic circuit or the surfaces of other members; and a production method for producing said optical member. According to the production method, the content of low-molecular-weight siloxanes D3-D20 in a optical member is reduced to an infinitesimal amount with use of a plurality of different low-molecular-weight siloxane removal steps.

Abstract: A polyester is provided. The polyester comprises: at least one repeating unit represented by formula (i), wherein R1 is a C6-C16 aromatic hydrocarbyl; and repeating units derived from diols, wherein the repeating units derived from diols comprise at least one repeating unit represented by the following formula (ii) and at least one repeating unit represented by the following formula (iii), and wherein R2 to R5 in formula (ii) are independently hydrogen, methyl, or ethyl, wherein based on the total moles of the repeating units derived from diols, the amount of the repeating unit represented by the formula (ii) is 5 mol % to 50 mol %.