Basf Se Corporation

Ciba Specialty Chemicals Corporation

Ciba Corporation

Basf Se Ludwigshafen

Paragkumar Thanki

Paul A Odorisio

Stephen Mark Andrews

Thomas Friend Thompson

Si Wu

Jianzhao Wang

Deepak M Rane

Suhas Dattatraya Sahasrabudhe

Delina Joseph

Michèle Gerster

Michael Tinkl

Fabien Jean Brand

Archana Kishore Desai

Shrirang Bhikaji Hindalekar

Martin Brunner

Alessandro Zedda

Andrea Preuss

Deepak Rane

Armin Schneider

Kishor Prabhakar Kumbhar

Jürgen Wiethan

Preetam Ghogale

Disclosed are phosphinic acid compounds of formula I, II or III where Rand R' are for instance straight or branched C-Calkyl, Ris for instance straight or branched C-Calkyl, Rand R&#x2032; are for instance straight or branched C-Calkyl, Ris for instance straight or branched C-Calkylene and m is from 2 t 100. Also disclosed are polyester compositions comprising the compounds of formula I, II and III.

Solid state polymerization process for polyester with phosphinic acid compounds

Disclosed is a method for increasing the solid state polymerization (SSP) rates of metal catalyzed polyesters. The method comprises in a first step, reacting a dicarboxylic acid or a C-Cdicarboxylic diester with a diol at a suitable temperature and pressure to effect esterification or transesterification to prepare a precondensate and in a second step, reacting the precondensate to effect polycondensation at a suitable temperature and pressure to prepare a high molecular weight polyester and in a third step, further increasing the molecular weight and viscosity of the polyester under SSP conditions of a suitable temperature and pressure, where a metal catalyst is added in the first step or in the second step as a reaction catalyst, and where a certain phosphinic acid compound is added in the first step, in the second step or just prior to the third step. The polyester product exhibits low aldehyde formation during melt processing steps as well as excellent color.

The instant invention relates to oligo- and poly-carbonates terminated with silicon containing groups which are useful as reducers of surface energy for organic materials such as polycarbonates, polyesters or polyketones or their mixtures, blends or alloys. Polymers with such reduced surface energy possess self-cleaning, anti-soiling, anti-graffiti, oil resistance, solvent resistance, chemical resistance, self-lubricating, scratch resistance, low moisture absorption, dirt pickup resistance, slip properties and a hydrophobic surface; and display anti-adhesion properties against proteins and against microorganisms such as for example, bacteria, fungi and algae.

Oligo- and poly-carbonates terminated with silicon containing groups as surface modifiers

The instant invention relates to new compounds of the formula I   These new compounds of the formula I are useful as reducers of surface energy for organic materials such as polycarbonates, polyesters or polyketones or their mixtures, blends or alloys. Polymers with such a reduced surface energy possess an 'easy to clean', 'self-cleaning' &#x201c;antisoiling&#x201d;, &#x201c;soil-release&#x201d; &#x201c;antigraffiti&#x201d;, &#x201c;oil resistance&#x201d;, &#x201c;solvent resistance&#x201d;, &#x201c;chemical resistance&#x201d;, &#x201c;self lubricating&#x201d;, &#x201c;scratch resistance&#x201d;, &#x201c;low moisture absorption&#x201d; and &#x201c;hydrophobic&#x201d; surface.

Fluorocarbon terminated oligo- and poly-carbonates as surface modifiers

Disclosed is a method for the preparation of a polyester, which method comprises in a first step, reacting a dicarboxylic acid or a C-Cdicarboxylic diester with a diol at a suitable temperature and pressure to effect esterification or transesterification to prepare a precondensate and in a second step, reacting the precondensate to effect polycondensation at a suitable temperature and pressure to prepare a high molecular weight polyester, where a metal phosphonic acid complex compound of the formula is employed in the first step, in the second step or in both the first and second steps as a reaction catalyst.

Process for producing polyester with metal phosphonic acid complex catalysts

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Maharashtra, India

Paragkumar Thanki