Reliance Industries Limited

Virendra Kumar Gupta

Sumit Bhaduri

Gandham Satya Srinivasa Rao

S Muthukumaru Pillai

Krishna Renganath Sarma

Harshad Ramdas Patil

Ajit Sapre

Amarjyoti Kalita

Priyanshu Bharatkumar Vyas

Haribhau Shantaram Kumbhar

Ashok Misra

Saurabh Kumar Tiwari

Sangeetha Karthikeyan

The present disclosure relates to a catalyst composition and a process for preparation thereof. The catalyst composition of the present disclosure is stable, and produces polyolefin having narrow molecular weight distribution during the polymerization. The process of the present disclosure is simple, cost-effective, and rapid.

Catalyst composition and a process for preparation thereof

The present disclosure relates to an internally plasticized polyvinyl chloride resin and a process for preparation thereof. The internally plasticized polyvinyl chloride resin comprises a polyvinyl chloride (PVC) resin covalently bonded to at least one plasticizer. The process is simple and economical and provides internally plasticized PVC with enhanced flexibility, and improved characteristics than conventional PVC resin.

Internally plasticized polyvinyl chloride and a process for preparation thereof

Described herein are novel acetal compounds capable as nucleating agents for polyolefins. The present invention relates to such compounds synthesized by reacting aromatic aldehydes with polyols and further, to the achievement of high crystallization temperatures in polypropylene compositions upon dispersal therein of formulations containing one or more of the said acetal compounds.

Nucleating agents for polyolefins based on acetal compounds

Described herein are novel metal salts capable as nucleating agents for polyolefins. The present invention relates to such salts synthesized by reacting potassium hydroxide with carboxylic acids and further, to the achievement of high crystallization temperatures in polypropylene compositions upon dispersal therein of formulations containing one or more of the said metal salts.

Nucleating agents for polyolefins based on metal salts

Single step process for the preparation of lower &#x3b1;-alkene polymerisation heterogeneous solid catalyst, wherein the procatalyst is obtained by reacting organomagnesium precursor and titanium tetrahalide or titanium haloalkoxo species of the formula Ti(OR)m Xn, with a hydrocarbon or halohydrocarbon solvent and internal electron donor and optionally an acid halide under microwave irradiation of 300 to 1200 W. The mole ratio of the organomagnesium precursor to the titanium tetrachloride or titanium haloalko species is 1:6 to 1:20 and the mole ratios of the electron donor and acid halide to titanium is 0.3 to 1.5 and 0.02 to 0.2, respectively.

Single step process for the preparation of lower &#x3b1;-alkene polymerization heterogeneous solid catalyst

An olefin polymerization titanium catalyst. It comprises a titanium compound and an organoaluminium compound cocatalyst supported on a soluble polysulfone comprising free reactive sulfone groups. The molar ratio of titanium of aluminum is 1&#x2013;10:200 and the weight ratio of titanium to polysulfone is 0.01&#x2013;0.1:0.3&#x2013;2.5. The process for preparing the catalyst comprises preparing a supported titanium compound by contacting a solution of a polysulfone in a halogenated or polar solvent with a titanium compound or a solution thereof in a halogenated or polar solvent in an inert atmosphere at a temperature between 10&#xb0; C. and the boiling point of the solvent such that the weight ratio of titanium to polysulfone is 0.01&#x2013;0.1:0.3&#x2013;2.5. The supported titanium compound is mixed with an organoaluminium cocatalyst such that the molar ratio of titanium to aluminum is 1&#x2013;10:200.

Olefin polymerization titanium catalyst

A lower &#x3b1;-alkene polymerization heterogeneous solid catalyst which comprises a hydrated magnesium chloride derived procatalyst, a cocatalyst comprising an organoaluminium compound and a selectivity control agent comprising an ester or ether. The procatalyst comprises a titanium tetrahalide supported on a magnesium chloride ester complex precursor. Magnesium chloride alcoholate is reacted with an activated carbonyl compound in the presence of a hydrocarbon and/or halohydrocarbon solvent to generate insitu an internal electron donor ester component of the precursor. The precursor is reacted with a titanium tetrahalide optionally in the presence of a hydrocarbon and/or halohydrocarbon solvent.

Growing community of inventors

Maharashtra, India

Virendra Kumar Gupta