Sabic Innovative Plastics IP B.v.

General Electric Company

Ravindra Vikram Singh

Gurram Kishan

Balakrishnan Ganesan

Jan Henk Kamps

Jan-Pleun Lens

Pradeep Jeevaji Nadkarni

Venkata Rama Narayanan Ganapathy Bhotla

T Tilak Raj

James Alan Mahood

Suresh Shanmugam

Kumar Arun Satyanarayana

Rajshekhar Basale

Arakali Srinivasarao Radhakrishna

Radhakrishna Arakali Srinivasarao

Swaminathan Shubashree

Pushpa Narayanan

A S Radhakrishna

Suresh Shanumgam

Hyacinth Mary Bastian

Venkata Rama Narayanan Ganapathy Bholta

Surendra Kulkarni

Gv Ramanarayanan

S Arun Kumar

A method for purifying a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine comprises contacting a crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine with a purification agent, removing a 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound from the crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine, and producing a purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidine product comprising less than 200 parts per million of the 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound. The purification agent is selected from the group consisting of an acidic material, an organic acid chloride, an organic anhydride, or a combination thereof. The 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound has a formula: wherein each Ris independently selected from a group consisting of a hydrocarbyl radical, a nitro radical, and a halogen atom; 'a' is an integer from 0 to 4; and Arand Arare independently at each occurrence an aromatic radical. The purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidines have low color, and are useful for preparing polymers, such as polycarbonates having a low color. The polycarbonates are useful for producing articles.

Methods for purifying 2-aryl-3,3-bis(hydroxyaryl)phthalimidines

Disclosed herein is a method comprising reacting a phenolphthalein material and a primary hydrocarbyl amine in the presence of an acid catalyst to form a reaction mixture comprising 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, wherein the phenolphthalein material comprises greater than or equal to 99 weight percent phenolphthalein, based on the total weight of the phenolphthalein material; quenching the reaction mixture and treating the quenched reaction mixture to obtain a first solid. The first solid is purified by a combination of techniques to produce a solid comprising 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine with sufficient purity to be used as a monomer in the synthesis of clear polymers.

Methods for producing and purifying 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine monomers and polycarbonates derived therefrom

Purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidines

Disclosed herein is a method comprising reacting a phenolphthalein material and a primary hydrocarbyl amine in the presence of an acid catalyst to form a reaction mixture comprising 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, wherein the phenolphthalein material comprises greater than or equal to 95 weight percent phenolphthalein, based on the total weight of phenolphthalein material; quenching the reaction mixture and treating the quenched reaction mixture to obtain a first solid. The first solid is then triturated with a trituration solvent and washed to obtain a second solid, wherein the second solid comprises greater than or equal to 97 weight percent 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, based on the total weight of the second solid. The second solid may be polymerized to form a polycarbonate.

Disclosed herein is a process for preparing a polymer comprising structural units derived from polycyclic dihydroxy compound having Formula (I), wherein Ris selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; Ris selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each Rand R, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, 'n' is an integer having a value 0 to 4 and 'm' is an integer having a value 0 to 4. The process comprises subjecting a polycyclic dihydroxy compound of Formula (I) to polymerization.

Methods of polymer preparation using polycyclic dihydroxy compounds

A polymer comprises structural units derived from a polycyclic dihydroxy compound of Formula (I) 

Polymers, polymer compositions and method of preparation

A dihydroxy aromatic compound having a Formula (I) wherein Ris selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; Ris selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each Rand R, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, 'n' is an integer having a value 0 to 4 and 'm' is an integer having a value 0 to 4.

Polycyclic dihydroxy compounds and methods for preparation

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Utter Pradesh, India

Ravindra Vikram Singh