The disclosure relates to the battery field and a PEO film, a preparation method thereof, and a solid-state battery are provided. A molecular structure of the PEO film includes a structural unit B, and the structural unit B includes —CH═CH—O—.

A method of producing an article including a substrate and a layer a surface-treating agent containing a polyether group-containing silane compound on a surface of the substrate, wherein the polyether group-containing silane compound is () a compound represented by formula (1) or formula (2):

##STR00001##

The present invention concerns a method for producing poly(oxyalkylene) polyols started with phosphorus-containing compounds, which have an inner block containing high amounts of EO, as well as the poly(oxyalkylene) polyols obtainable in this manner. Furthermore, the present invention comprises a method for producing polyurethane foams, preferably flexible polyurethane foams, by reacting an isocyanate component with a component reactive to isocyanates, which comprises at least one poly(oxyalkylene) polyol started with phosphorus-containing compounds with an inner block containing high amounts of EO, the polyurethane foams produced by the inventive method and their application.

Disclosed are a preparation method of a phosphorus-nitrogen-silicon-containing polymeric flame retardant and application thereof. The chemical structure of the polymeric flame retardant is ##STR00001##
wherein m=10100, n=10100. The synergistic flame-retardant effect between the phosphorus, nitrogen, and silicon in the phosphorus-nitrogen-silicon-containing polymeric flame retardant increases the flame retardancy of epoxy resin.

A polyalkylene glycol derivative with a minimal impurity content is prepared simply by the steps of reacting a compound having formula (III-I) or (III-II) with an electrophile having formula (IV) in the presence of an optional basic compound, to form a reaction solution containing a compound having formula (V), and passing the reaction solution through a column of cation and anion exchange resins to remove water-soluble impurities, for thereby purifying the desired polyalkylene glycol derivative.
R.sup.1R.sup.2OR.sup.3O.sub.n-1R.sup.3O.sup.M.sup.+(III-I)
R.sup.1R.sup.2OR.sup.3O.sub.n-1R.sup.3OH(III-II)
R.sup.4R.sup.5X(IV)
R.sup.1R.sup.2OR.sup.3O.sub.nR.sup.5R.sup.4(V)

A fluorine-containing ether compound of the present invention is represented by Formula (1).
R.sup.1CH.sub.2R.sup.2CH.sub.2R.sup.3(1) (In Formula (1), R.sup.1 is an organic end group having 3 or more carbon atoms which includes two or more polar groups with each polar group being bonded to different carbon atoms and the carbon atoms to which the polar groups are bonded being bonded to each other via a linking group including the carbon atoms which are not bonded to the polar groups, R.sup.2 includes a perfluoropolyether chain represented by Formula (3), and R.sup.3 is a hydroxyl group or R.sup.1)
(CF.sub.2).sub.y1O((CF.sub.2).sub.yO).sub.z(CF.sub.2).sub.y1(3) (In Formula (3), y represents an integer of 2 to 4, and z represents an integer of 1 to 30).

A flame-retardant polyether polyol is provided, including a Mannich base and an epoxide. The epoxide is selected from ethylene oxide, propylene oxide and butylene oxide. The Mannich base has a structure represented by a formula (I). In the Mannich base, flame-retardant groups, i.e., halogens are introduced at the second, fourth and sixth positions of a phenyl group, and flame-retardant elements, i.e., halogens and nitrogen are introduced into synthesized polyether polyol. The amount of active hydrogen in the Mannich base is small so that side reactions during synthesis of the polyether polyol are reduced, and the viscosity of the polyether polyol is lowered. A flame-retardant polyurethane material is also provided, synthesized from raw materials comprising the above-mentioned flame-retardant polyether polyol and an isocyanate. Due to autocatalytic performance of tertiary amido in the flame-retardant polyether polyol, use of a catalyst can be reduced and even avoided during the synthesis.

Application of a Mannich base in a flame-retardant polyurethane material is provided. The Mannich base has a structure represented by a formula (I). In the Mannich base, flame-retardant groups, i.e., halogens are introduced at the second, fourth and sixth positions of a phenyl group, and flame-retardant elements, i.e., halogens and nitrogen are introduced into synthesized polyether polyol, giving the synthesized polyether polyol good flame retardance. The amount of active hydrogen in the Mannich base is small so that occurrence of side reactions during the synthesis of the polyether polyol is reduced, and the viscosity of the flame-retardant polyether polyol is lowered. Due to autocatalytic performance of tertiary amido in the flame-retardant polyether polyol, use of a catalyst can be reduced and even avoided during the synthesis. A preparation method of the Mannich base is also provided.

The present invention discloses novel flame retardant aqueous formulations comprising micronized particles of brominated epoxy polymers having a predetermined molecular weight, their use as flame retardant coating of wood-based substrates, their preparation and flame-retarded wood-based substrates prepared by using them.

A novel phosphate polyol formulation is described, comprising a polyester polyol, a flame retardant comprising a phosphate polyol, a blowing agent, a catalyst, a surfactant, and a fire-retardant aromatic isocyanate. A further embodiment includes a phosphorus compound, such as a phosphate, a phosphate ester, or an alkyl phosphate such as triethyl phosphate.