Abstract:
The present invention generally relates to a novel polymeric material formed, at least in part, from monomeric material comprising 2,3,3,3-tetrafluoropropene (CF3CF=CH2, 1234yf), to polymeric compositions, to coating compositions, and to uses thereof.
Abstract:
Provided are compounds described by the formula (I), wherein W, X, Y and Z are independently selected from the group consisting of hydrogen, fluorine, hydroxyl, substituted alkyl and unsubstituted alkyl. Also provided are methods of making compounds of the present invention, and polymers derived from one or more compounds of the present invention.
Abstract:
The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to closed-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a non-amine catalyst used alone or in combination with an amine catalyst.
Abstract:
Disclosed are methods of producing fluorinated alcohols which find particular use in the syntheses of pharmaceutical drugs. The methods comprise generally, the steps of (a) reacting a halogenated alkane with an alkyl vinyl ether to form an unsaturated halogenated aldehyde; (b) reducing the unsaturated halogenated aldehyde to form an unsaturated halogenated alcohol; and (c) reducing the unsaturated halogenated alcohol to form a fluorinated alcohol.
Abstract:
The present invention relates to methods of producing polymerized 2,3,3,3-tetrafluoropropene (poly-1234yf) using one or a combination of the techniques provided herein. In certain embodiments, such techniques include (1) emulsion polymerization; (2) suspension polymerization; (3) solution polymerization; (4) supercritical carbon dioxide polymerization; (5) transition metal catalyzed polymerization; (6) radiation or thermal polymerization; and combinations thereof. A wide array of initiators, catalysts, and solvents may be used in such polymerization processes and may include, but are not limited to, (1) radical initiators; (2) ionic initiators; and (3) single-site and multiple-site catalysts.
Abstract:
The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to closed-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and an-amine catalyst that preferably has a Fluoride Generation Value of not greater than about 1000 ppm.
Abstract:
Provided are methods of producing fluorinated alcohols from non-perfluorinated fluoroolefins and methanol. Certain preferred embodiments of such methods involve advantageously reacting a non-perfluorinated fluoroolefin with methanol under ambient-pressure and/or low-temperature conditions.
Abstract:
A copolymer comprising trans-1,3,3,3-tetrafluoropropene units and vinylidene fluoride units, and methods of making the same. A method of preventing biofouling on an article of manufacture, comprising applying such copolymer to the article of manufacture. A process of preparing a surface having a surface energy of between about 20 and about 30 mJ/m2, comprising applying such a copolymer to a support. A method of preventing accumulation of ice on an article of manufacture, comprising applying such a copolymer to an article of manufacture. A method of preparing a polymer, comprising a step of adding trans-1,3,3,3-tetrafluoropropene/vinylidene fluoride copolymer as a polymer processing additive/aid to said polymer.