A polyester polymer is polymerized from an alcohol component including a diol and a polyol and an acid component including terephthalic acid and isophthalic acid, with the terephthalic acid and isophthalic acid present in a desired molar ratio. The polyester polymer also includes carboxylic acid functional groups, a weight average molecular weight (MW) of at least 5000 Daltons (Da), and an acid value (AV) of 40 to 65. The polyester polymer may be formulated into a water-based coating composition for substrates such as articles of cookware to form a coating that is highly heat resistant and flexible while also providing non-stick properties with good release.

The present disclosure relates to a catalyst system to produce crystallizable polyester compositions which comprise residues of terephthalic acid, neopentyl glycol (NRG), 1,4-cyclohexanedimethanol (CHDM), ethylene glycol (EG), and diethylene glycol (DEG), in certain compositional ranges having certain advantages and improved properties including recyclability. The present disclosure also relates to a catalyst system to produce crystallizable polyester compositions which comprise residues of recycled terephthalic acid, recycled neopentyl glycol (NRG), recycled 1,4-cyclohexanedimethanol (CHDM), recycled ethylene glycol (EG), and/or recycled diethylene glycol (DEG), in certain compositional ranges having certain advantages and improved properties including recyclability.

A semicrystalline plastic composition comprising: a semicrystalline plastic and an additive dispersed therein. The semicrystalline plastic includes a polymeric chain comprising repeat units of an oligomeric or polymeric chain and the additive comprises a supramolecular building block and an oligomeric or polymeric tail. The oligomeric or polymeric tail of the additive having the same repeat units as the polymeric chain of the semicrystalline plastic. The additive forming a plurality of sheet-like structures through hydrogen bonding. The sheet-like structures, interacting through non-covalent interaction, form crystallized additive domains within the semicrystalline plastic.

The disclosure relates to methods of making foams comprising aromatic polyester polyether polyol materials derived from the transesterification of polyethylene terephthalate with either glycerin or trimethylolpropane, wherein each of these triols, independently, has a degree of ethoxylation of from 1 to 9. Uses of the foams are further disclosed. The disclosure further relates to selection of blowing agents suitable to generate a selected end use case. Yet further, the disclosure relates to selection of end uses, properties, and environmental profiles of the foams generated according to the methods herein, and selecting formulation variables suitable to obtain the foams.

The present invention relates to the combination of certain flame retardant additives in a copolyester to improve the flame retardant properties of the copolyester composition while retaining clarity and impact properties, methods of making the copolyester composition and articles made from the copolyester composition. More specifically, the present invention relates to the use of brominated flame retardant compounds in copolyester compositions to improve the flame retardant properties while surprisingly retaining clarity, glass transition temperature, and impact properties.

A process for producing a polyester composition from recycled polyesters.

The present invention provides an asphalt composition containing an asphalt and a polyester, the polyester being a polycondensate of a polyethylene terephthalate, an alcohol, and a carboxylic acid compound, the polyethylene terephthalate having a value of [(a quantity of heat absorbed in a DSC measurement)−(a quantity of heat generated in a DSC measurement)] of 5 J/g or more and 30 J/g or less and having an intrinsic viscosity (IV) of 0.6 or more and 1.05 or less.

The present application relates to a chain extender masterbatch for PET extrusion foaming, preparation method therefor, and a use thereof. The masterbatch is mainly prepared by the following components in parts by weight: 5-30 parts of PMDA, 25-90 parts of PBT, 5-70 parts of POE+POE-g-GMA, in which POE accounts for 0-85% of POE+POE-g-GMA by weight; a melting temperature of PBT is 170-225° C. The preparation method includes melting and mixing the above components at a melting temperature of 180-230° C. and a screw speed of 100-500 rpm, and air cooling strand granulating or air cooling die face granulating. The masterbatch can be used in foaming processes of fiber grade PET, film grade PET, bottle grade PET, engineering plastic grade PET and recycled PET.

The present application discloses a bending-resistant polyester film and its production method thereof. The chemical structure of the bending-resistant polyester composition comprises monomers having elastic conformation. The film made from the composition of polyester of the present invention through production processes such as melt extrusion and biaxial drawing still has excellent flexibility and optical properties.

The present disclosure envisages a coating composition. The coating composition comprises a polymeric emulsion, silane functionalized fibres and a fluid medium. The silane functionalized fibres are present in an amount in the range of 0.05 wt. % to 10 wt. % of the coating composition. The polymeric emulsion is present in an amount in the range of 20 wt. % to 60 wt. % of the coating composition. The fluid medium is present in an amount in the range of 5 wt. % to 40 wt. % of the coating composition. The silane functionalized fibre comprises at least one polymer bonded to at least one silane group. The coating composition of the present disclosure exhibit improved properties such as better coverage when applied on a surface, mechanical properties, stain resistance properties and the like, when compared to coating composition without fibres.