Eastman Chemical Company

Akron Polymer Systems, Inc.

Douglas Stephen McWilliams

Ted Germroth

Emmett Dudley Crawford

Gary Wayne Connell

Thomas Joseph Pecorini

Thauming Kuo

Bin Wang

David Scott Porter

Damon Bryan Shackelford

Benjamin Fredrick Barton

Frank Wayne Harris

Dong Zhang

Xiaoliang Joe Zheng

Michael Eugene Donelson

Jiaokai Jing

Ryan Thomas Neill

Peiyao Wang

Emmet Dudley Crawford

Davis Scott Porter

A polymer blend includes a combination of an acrylic polymer and a styrenic fluoropolymer. The polymer blend may be used to make polymer films having a single glass transition temperature, a polarizing plate, or a display device with enhanced optical properties.

Fluoropolymer-based polymer blends, polymer films, and polarizer protective films

The present invention pertains to an optical film for use as a quarter wave plate (QWP) having a normal wavelength dispersion curve. More specifically, this invention relates to a quarter wave plate based on cellulose ester polymer and fused ring additives.

Cellulose ester based quarter wave plates having normal wavelength dispersion

Described are coating compositions comprising a polyester, the polyester comprising: at least one polyester which comprises a dicarboxylic acid component comprising terephthalic acid residues, and a glycol component comprising 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 60 to 70 mole % cyclohexanedimethanol residues, where the inherent viscosity of the polyester is from 0.10 to 0.70 dL/g, and where the coating composition is made from a film or sheet.

Polyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and high glass transition temperature and articles made therefrom

Described as one aspect of the invention are polyester compositions containing:

Polyester compositions which comprise cyclobutanediol and certain thermal stabilizers, and/or reaction products thereof

Described are polyesters comprising (a) a dicarboxylic acid component comprising 80 to 100 mole % terephthalic acid residues; optionally, 0 to 20 mole % aromatic dicarboxylic acid residues or aliphatic dicarboxylic acid residues; 20 to 30 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and 70 to 80 mole % 1,4-cyclohexanedimethanol residues. The polyesters may be manufactured into articles such as fibers, films, bottles or sheets.

Polyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and moderate glass transition temperature and articles made therefrom

The present invention pertains to an unstretched optical film comprising an additive for enhancing retardation in the thickness direction (R) and methods for making the optical film.

Optical films containing optical retardation-enhancing additive

Disclosed are ternary polyester blends that contain at least one polyester comprising terephthalic or isophthalic acid, ethylene glycol, and 1,4-cyclohexanedimethanol residues, and at least one polyester comprising terephthalic or isophthalic acid, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and 1,4-cyclohexanedimethanol residues. The ternary polyester blends have improved clarity, toughness, and fabrication characteristics and are useful for the preparation of flat or shaped articles. Of special interest are ternary blends where one of the three components compatibilizes the blend of two otherwise immiscible polyesters.

Ternary blends of terephthalate or isophthalate polyesters containing EG, CHDM and TMCD

A multilayer optical film includes a wave plate having a refractive index profile of n&#x3e;n&#x2267;nand a fluoropolymer film comprising a moiety of wherein R, R, and Rare each independently hydrogen atoms, alkyl groups, substituted alkyl groups, or halogens, wherein at least one of R, R, and Ris a fluorine atom, wherein R is each independently a substituent on the styrenic ring, n is an integer from 0 to 5 representing the number of the substituents on the styrenic ring, and wherein nand nrepresent in-plane refractive indices and nthe thickness-direction refractive index of the wave plates; wherein said multilayer optical film has a positive in-plane retardation (R) and an out-of-plane retardation (R) that satisfies the equation of |R|&#x3c;R/2 throughout the wavelength range of 400 nm to 800 nm.

Wide-view multilayer optical films

Described are polyester compositions comprising at least one polyester which comprises terephthalic acid residues, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and 1,4-cyclohexanedimethanol, wherein the inherent viscosity and the Tg of the polyester provides for certain polyester properties. The polyesters may be manufactured into articles such as fibers, films, bottles or sheets.

A method for casting a styrenic fluoropolymer film on a substrate includes preparing a polymer solution by dissolving the fluoropolymer in a solvent or solvent blend whose Hansen solubility parameters (HSPs. MPa) satisfy the following relations: |SP&#x2212;SP|&#x3c;5, |SP&#x2212;SP|&#x3c;4, |SP&#x2212;SP|&#x3c;7, and 2&#x3c;|SP&#x2212;SP|&#x3c;10 wherein SP, SP, SP, are the total Hansen solubility parameters of solvent/solvent blend, fluoropolymer, and substrate, respectively; SP, SP, and, SPare the hydrogen-bond Hansen solubility parameters of solvent/solvent blend, fluoropolymer, and substrate, respectively; wherein the fluoropolymer comprises a moiety of: wherein R, R, and Rare each independently hydrogen atoms, alkyl groups, substituted alkyl groups, or halogens, wherein at least one of R, R, and Ris a fluorine atom, and wherein R is each independently a substituent on the styrenic ring, n is an integer from 0 to 5 representing the number of the substituents on the styrenic ring.

Optical films cast from styrenic fluoropolymer solutions

A method for the preparation of a fluoropolymer by means of emulsion polymerization of a reaction mixture in an aqueous medium is disclosed wherein the reaction mixture includes a fluoromonomer having the structure of 

Method for the preparation of styrenic fluoropolymers

Described are polyesters comprising (a) a dicarboxylic acid component comprising terephthalic acid residues; optionally, aromatic dicarboxylic acid residues or aliphatic dicarboxylic acid residues; 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and cyclohexanedimethanol residues. The polyesters have a desirable combination of inherent viscosity and glass transition temperature ('Tg'). The polyesters can have an inherent viscosity from 0.35 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25&#xb0; C. and a Tg of 85 to 115&#xb0; C. The polyesters may be manufactured into articles such as fibers, films, bottles or sheets.

Described as one aspect of the invention are polyester compositions containing: (I) at least one polyester which comprises: (a) dicarboxylic acid component comprising: (i) 70 to 100 mole % of terephthalic acid residues; (ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbons atoms; and (iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and (b) a glycol component comprising: (i) 1 to 99 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and (ii) 1 to 99 mole % of cyclohexanedimethanol residues; and (II) at least one thermal stabilizer chosen from at least one alkyl phosphate esters, aryl phosphate esters, mixed alkyl aryl phosphate esters, reaction products thereof, and mixtures thereof; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %.

Growing community of inventors

Kingsport, TN, United States of America

Douglas Stephen McWilliams