Honeywell International Inc.

Changqing Lu

Rajiv R Singh

Andrew Joseph Poss

David Nalewajek

Cheryl Cantlon

Pascal Bolomey

Cheryl Cantion

Paul Todaro

Rajiv Ratna Singh

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/m, 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.

Synthesis and use of trans-1,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers

Disclosed are aqueous emulsion copolymerization processes for synthesizing 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers having 2,3,3,3-tetrafluoropropene as the major monomer unit. The copolymerization process is performed at temperatures of from about 55&#xb0; C. to about 70&#xb0; C. with at least one water soluble radical initiator, with preferred initiators including NaSO, KSO, (NH)SO, Fe(SO), KSO/FeSO, (NH)SO/FeO, and the like, as well as combinations thereof.

Synthesis of 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers

Disclosed are copolymers and terpolymers chlorotrifluoroethylene and vinyl chloride having improved properties, and particularly a high glass transition temperature, for use in membranes, coatings, barrier films, and other applications and process for forming such copolymers and terpolymers, which are useful in reverse osmosis desalination, nanofiltration, ultrafiltration, microfiltration, membrane distillation, pervaporation, selective gas separation, batteries and fuel cells.

Copolymers and terpolymers based on chlorotrifluoroethylene and vinyl chloride and uses thereof

In accordance with the present invention, aqueous emulsion polymerization processes of synthesizing 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers having 2,3,3,3-tetrafluoropropene as the major monomer unit are provided.

The present invention generally relates to polymeric membrane materials formed, at least in part, from monomeric material selected from 2,3,3,3-tetrafluoropropene (CFCF&#x2550;CH, HFO-1234yf) or trans-1,3,3,3-tetrafluoropropene (CFCH&#x2550;CFH, HFO-1234ze), and to membrane preparations and uses thereof in water desalination, filtration, membrane distillation, pervaporation, and selective gas separation.

1234YF- and 1234ZE-based polymeric membrane materials, membrane preparations and uses thereof

A process of synthesizing poly(2,3,3,3-tetrafluoropropene), comprising reacting 2,3,3,3-tetrafluoropropene monomers in a reaction medium in the presence of an initiator, wherein the initiator is added to the reaction medium in multiple portions at different times during the process.

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Snyder, NY, United States of America

Changqing Lu