The present invention provides a polyester resin having a self-emulsifying function which is able to form an aqueous emulsion without using any emulsifier and organic solvent. The present invention also provides a water dispersion, an aqueous adhesive, an aqueous ink, a laminate and a packaging material containing the above polyester resin, as well as a method for preparing the water dispersion.

The present disclosure provides polymeric systems that are able to undergo fast hydration and are useful for maintaining particle dispersions for extended periods of time.

Provided are polymer compositions made by a process comprising: (a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker; (b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator, (c) combining the crosslinked substrate network with a second reactive composition containing one or more ethylenically unsaturated compounds; and (d) activating the covalently bound activatable free radical initiator of the crosslinked substrate network such that the second reactive composition polymerizes therein with the crosslinked substrate network to form a grafted polymeric network and a byproduct polymer. Also provided are precursors to the polymer compositions, processes for preparation of the polymer compositions, and methods of using the polymer compositions, for instance in medical devices.

A method of manufacturing a solid electrolytic capacitor including a porous anode body made of a valve metal having a dielectric film on a surface thereof, and a solid electrolyte layer disposed on a surface of the dielectric film. The method including: a step of; in a liquid including a polyanion and an aqueous medium, polymerizing a monomer compound to obtain a dispersion (1) containing a conjugated electrically conductive polymer and subjecting dispersion treatment to the dispersion (1) to obtain a dispersion (2) containing the conjugated electrically conductive polymer; depositing the dispersion (2) to a porous anode body made of a valve metal having a dielectric coating on a surface thereof; and removing the aqueous medium from the dispersion (2) deposited on the porous anode body to form a solid electrolyte layer, wherein an operation which pauses the dispersion treatment is performed.

Aqueous polyurethane dispersions and coatings and heat-activatable adhesives made from the dispersions are disclosed. The dispersions include a polyurethane reaction product of a polyester polyol and a polyisocyanate. The polyester polyol comprises recurring units of at least one C.sub.2-C.sub.6 aliphatic diol, at least one aliphatic or cycloaliphatic C.sub.4-C.sub.10 dicarboxylic acid, and an aromatic diacid source, which can be recycled PET. The dispersion is formulated using 1 to 3 moles of an acid-functional diol per mole of polyester polyol. Dispersions for the adhesives are produced at NCO/OH molar ratios within the range of 0.90 to 0.98. The adhesives successfully bond a wide range of plastic and metal materials, often demonstrating substrate failure, even with steel. This contrasts with commercial adhesives such as EVA that exhibit only adhesive failure with the same substrates.

An aqueous dispersion of a polyurethane wherein the polyurethane is obtained by reacting di- or polyfunctional cyanates, diols, a dicarboxylate with one or two secondary amino groups and optionally further compounds.

Described herein is an aqueous polymer dispersion comprising: (a) an ethylene-tetrafluoroethylene copolymer (b) 1-25 wt % of a non-ionic, branched, alkoxy alcohol surfactant versus the ethylene-tetrafluoroethylene copolymer, and (c) 0.05-5 wt % non-fluorinated anionic surfactant versus the ethylene-tetrafluoroethylene copolymer. Such aqueous polymer dispersion may be used to coat a fiber-containing substrate.

The present invention relates to a process for preparing an aqueous dispersion of neutralized multistage polymer particles comprising the steps of contacting under emulsion polymerization conditions a) an aqueous dispersion of first polymer particles with b) first monomers to form an aqueous dispersion of 2-stage polymer particles; then contacting under emulsion polymerization conditions the aqueous dispersion of 2-stage polymer particles with second monomers comprising to form an unneutralized aqueous dispersion of 3-stage polymer particles; then neutralizing the unneutralized aqueous dispersion of 3-stage polymer particles with a base to form an aqueous dispersion of neutralized 3-stage polymer particles, wherein the first and second monomers form a shell having a calculated T.sub.g of less than 50° C. The process of the present invention is useful in preparing a composition that is useful as an open time additive in coatings formulations.

The present invention discloses an aqueous antifogging resin, introducing a molecular segment and a functional group with good hydrophilicity and hygroscopicity, which impart excellent antifogging performance, coating strength and transparent flow appearance to the aqueous antifogging resin and the cured coating has a water contact angle of up to 110. The present invention further discloses a coating composition including the aqueous antifogging resin, and the cured coating of the coating composition has good antifogging, wear-resistant, water-resistant, chemical resistant, stain-resistant and UV-resistant performance, and excellent adhesion to a substrate; and the coating is firm at the same time, and has excellent film-forming strength and flexual endurance. The coating composition can be used for antifogging surface treatment of the window of mobile phone, PC or PMMA transparent materials, automotive glass and bathroom mirrors and has good long-term stability.

A core-shell particle including a core containing a perfluoropolymer and a shell containing a non-fluorine resin, the core having a periphery coated with the non-fluorine resin at a coverage of 90% or more, the perfluoropolymer being a polymer containing a polymerized unit based on a perfluoro monomer in an amount of 90 mol % or more relative to all polymerized units, and the shell having a mass of 50 or less relative to a total mass of the core and the shell of 80. Also disclosed is a method for producing the core-shell particle.