Abstract: A polymeric composition suitable for manufacturing heat sealable films or sheets comprising, polyethylene terephthalate (PET) to the extent of about 80% to 95% by mass of the total composition; a polymer additive for lowering the melting point of the composition selected from Polyethylene Naphthalate (PEN), Polytrimethylene Naphthalate (PTN), in-situ formed Polyethylene Naphthalate (PEN) and in situ formed Polytrimethylene Naphthalate (PTN) to the extent of about 20% to 5% by mass of the total composition; a nucleating agent to the extent of about 200 to 1500 ppm by mass of the composition; a polycondensation catalyst to the extent of about 30 to 300 ppm by mass of the composition; a clear fast reheat (CFRH) additive to the extent of about 10 to 30 ppm by mass of the composition; a color toner to the extent of about 0.75 to 25 ppm by mass of the composition; and a heat stabilizer to the extent of about 20 to 55 ppm by mass of the composition.

Abstract: The invention relates to modified Polyethylene Naphthalate (PEN) polymers with fast crystallizing properties, which helps in crystallization of amorphous PEN resin prior to its solid state polymerization (SSP).

Abstract: The present invention provides a process for the preparation of high molecular weight crystalline Polyethyleneterephthalate (PET) using up to 50% of Post consumer recycled PET flakes along with Pure Terephthalic Acid (PTA), Isophthalic Acid (IPA) and Mono Ethylene Glycol (MEG) as a virgin raw material, in the presence of a combination of catalysts and additives to obtain an intermediate prepolymer heel having a low degree of polymerization further subjecting to autoclaving to yield an amorphous melt and followed by solid state polymerization.

Abstract: The invention provides polyester polymers suitable for production of monolayer and multilayer preforms and containers by a process of injection molding or co-injection molding and stretch blow molding technology for monolayer and multilayer containers. Containers of the invention not only have adequate CO2 barriers, but also have adequate O2 and UV barriers, high thermal stability, and burst strength to withstand tunnel pasteurization processes at about 60° C. for 20-30 minutes at 10 bar CO2 pressure for beer applications. There will further be no limitations due to humidity in respect of processing the resin/preforms and storage of preforms beyond what is required for normal PET. The polymers of the invention do not possess tie layer nor delamination problems and satisfy recycling criteria.

Abstract: The invention relates to modified Polyethylene Naphthalate (PEN) polymers with fast crystallizing properties, which helps in crystallization of amorphous PEN resin prior to its solid state polymerization (SSP).

Abstract: A process for the preparation of polyethylene terephthalate by making use of non antimony catalysts is described. The Ti complex catalyst is pre-dispersed in the polymer matrix selected from PET, PBT, PCTG, PETG, PCT, PEN, PPT, PTT or any other related polyesters and prepared as a master batch. The key feature of the process is that the polyester obtained is having good whiteness, as against the yellowness normally encountered with Ti based catalysts, and also the polyester has very good clarity with minimum haze.