Thermoplastic films are disclosed that are suitable for use as auto wraps. The films include a thermoplastic polymer layer comprising a thermoplastic polyurethane polymer and a polyvinyl acetal polymer. The films further comprise a patterned adhesive layer. The thermoplastic films, when tested by a 25% Heat Relaxation Test at a thickness of about 0.006 inches, exhibit a final load from about 0.02 to about 0.3 pounds force; and when tested by a 25% Elastic Recovery test, exhibit a residual strain at one minute of 2% or greater.

Thermosetting plastics are recycled by process that begins with grinding the plastic into small pieces. This particulate is then mixed with a catalyst and ball mill milled to a fine powder, which can then be reprocessed via molding (e.g., hot-press, injection, etc.).

A method for manufacturing an unsaturated polyester resin includes alcoholysis step, etherification step, condensation step and dilution step as follows. In alcoholysis step, a polycarbonate, a diol compound and an organic alkaline catalyst are mixed and heated to an alcoholysis temperature to obtain a first mixture. In etherification step, a carbonate compound is added to the first mixture and the first mixture and the carbonate compound are maintained at an etherification temperature to obtain a second mixture. In condensation step, the second mixture is cooled and a dianhydride or diacid monomer is added, and the second mixture and the dianhydride or diacid monomer are heated to a condensation temperature to obtain a third mixture. In dilution step, the third mixture is cooled to a dilution temperature, and a styrene or acrylic monomer is added to dilute it to a predetermined solid content to obtain an unsaturated polyester resin.

A liquid crystal polymer, composition, liquid crystal polymer film, laminated material and method of forming liquid crystal polymer film are provided. The liquid crystal polymer includes a first repeating unit, a second repeating unit, a third repeating unit, and a fourth repeating unit. The first repeating unit has a structure of Formula (I), the second repeating unit has a structure of Formula (II), the third repeating unit has a structure of Formula (III), and the fourth repeating unit has a structure of Formula (IV), a structure of Formula (V) or a structure of Formula (VI) ##STR00001##
wherein A.sup.1, A.sup.2, A.sup.3, Z.sup.1, R.sup.1, R.sup.2, R.sup.3 and Q are as defined in the specification.

A thin plate molding material includes a resin composition containing a resin component and a filling material, and a reinforced fiber with a predetermined fiber length. The content ratio of the reinforced fiber is a predetermined ratio. The mixing ratio of the resin component is a predetermined ratio.

A fluorene-containing resin with a fluorene skeleton and an ester bond and/or a carbonate ester bond is depolymerized by a depolymerization method that includes allowing the fluorene-containing resin to react with a carbonate ester in the presence of a hydrolysis catalyst to decompose the fluorene-containing resin, obtaining a decomposition product. This depolymerization method allows simple or easy depolymerization of the fluorene-containing resin. The decomposition product may contain a monocarbonate ester form of a diol and/or a dicarbonate ester form of a diol. In the depolymerization method, the decomposition product may be allowed to react with an alcohol to obtain a diol.

Provided is a method for producing a recycled polyester including a step of washing a polyester (PEs) composite material using a washing solvent obtained by mixing a solvent composed of a phenolic solvent and/or a chlorine-based organic solvent and one or more solvents selected from the group consisting of an aromatic hydrocarbon-based solvent, an aliphatic hydrocarbon-based solvent, a ketone-based solvent, an aldehyde-based solvent, an alcohol-based solvent, an ether-based solvent, and water, a step of dissolving PEs in the washed PEs composite material in a dissolving solvent containing a solvent composed of a phenolic solvent and/or a chlorine-based organic solvent, subjecting the solution to solid-liquid separation to obtain a liquid component, a step of obtaining PEs from the liquid component using a poor solvent having a boiling point of 130 C. or lower, and a step of drying PEs.

Provided is a method for producing a recycled PBT including a step of dissolving a PBT composite material in a solvent containing a phenolic solvent to obtain a solution containing PBT dissolved therein, a step of removing an insoluble matter from the solution containing PBT dissolved therein to obtain a liquid component containing PBT dissolved therein, a step of mixing the liquid component and a solvent capable of precipitating PBT by being mixed with the liquid component to precipitate PBT, thereby obtaining a slurry, and then separating the slurry into solid and liquid to obtain a solid PBT, and a step of drying the solid PBT to obtain a recycled PBT.

A heat-shrinkable polyester film is provided, in which the loss coefficient and the like are controlled in a plurality of temperature regions, and which has excellent wrinkle resistance characteristics. The heat-shrinkable polyester film is a heat-shrinkable polyester film derived from a polyester resin composition containing 30% to 90% by weight of an amorphous polyester resin and 10% to 70% by weight of a crystalline polyester resin with respect to the total amount, in which (a) a loss coefficient obtained using a dynamic viscoelasticity measuring apparatus has a first loss coefficient peak in a temperature region of below 100 C.; (b) a loss coefficient obtained in the same manner has a second loss coefficient peak in a temperature region of 100 C. or higher; and (c) a heat shrinkage ratio obtained when the film is immersed in hot water at 80 C. for 10 seconds is 30% or more.

A copolyester, comprising structural units represented by [I], [II], [III] and [IV]. The number of structural units represented by [III] is 1-99% of the number of structural units represented by [I], and the number of structural units represented by [IV] is 0-99% of the number of structural units represented by [I]. Also provided are a preparation method therefor and an application thereof. Because an introduced high-temperature self-crosslinking group and an ion group can improve the melt viscosity and the melt intensity during burning of a copolyester, and effectively enhance the char-forming capability of the copolyester, the copolyester exhibits excellent flame retardance and anti-dripping performance. The preparation process for the copolyester is mature, convenient to operate, and easy to control and apply to industrial production. ##STR00001## ##STR00002## ##STR00003## ##STR00004## ##STR00005##