Abstract:
A curable composition includes a functionalized fluoropolyether comprising at least one first free-radically reactive functional group, a functionalized polysiloxane comprising at least one second free-radically reactive functional group, and an effective amount of a free-radical curing system. The curable composition can be cured to making a fluoropolyether-polysiloxane elastomer. Compositions and shaped articles including the fluoropolyether-polysiloxane elastomer are also disclosed.
Abstract:
The present disclosure is related to a polymeric membrane, comprising a modified surface obtained from coating with hydrophilic monomers and curing the hydrophilic monomers with electron beam, wherein the hydrophilic monomers comprise at least one amino moiety, at least one polyoxyalkylene unit, and at least one (meth)acrylate moiety.
Abstract:
Described herein is a pressure sensitive adhesive comprising a high molecular weight fluorinated polymer having a Tg less than about 0°C and a number average molecular weight greater than about 20 kilograms/mole; and a low molecular weight fluorinated polymer derived from an ethylenically unsaturated fluorinated monomer, wherein the low molecular weight fluorinated polymer has a Tg greater than about -15°C and a number average molecular weight less than about 18 kilograms/mole. Also described herein are articles comprising the pressure sensitive adhesive composition.
Abstract:
A curable composition comprises a fluorinated polyether represented by the formula: Z 1 -X 1 p and a nonfluorinated polyether represented by the formula Q 1 - X 2 y Z 1 represents a p-valent perfluorinated polyether group. Q 1 represents a y-valent hydrocarbon polyether group. Each X 1 and X 2 group independently represents a functional group. p and y are integers ≥ 2. At least some of the p X 1 groups are reactive to at least some of the y X 2 groups to form a covalently cross-linked polymer network. Hybrid fluoroelastomers made by curing the curable compositions are also disclosed.
Abstract:
A curable composition is provided. The curable composition has at least one functionalized fluoropolyether and at least one radical curing system. Further provided are fluoroelastomer compositions having a glass transition temperature of less than -40°C and shaped articles comprising fluoroelastomers having glass transition temperatures of less than -40°C obtained by curing the curable compositions. Also described are methods of making fluoroelastomer compositions having glass transition temperatures of less than -40°C.
Abstract:
A polymeric membrane. The polymeric membrane includes a modified surface obtained from coating with hydrophilic monomers and curing the hydrophilic monomers with electron beam, wherein the polymeric membrane is selected from polyamide membranes and Ultra-high-molecular-weight polyethylene (UHMWPE) membranes; and wherein the hydrophilic monomers comprise at least one amino moiety;at least one polyoxyalkylene unit; and at least one (meth)acrylate moiety.
Abstract:
The present disclosure relates to hydrophilic microporous membranes comprising a modified surface. In addition, the present disclosure relates to a process for producing such hydrophilic membranes by modification of microporous membranes with fluorinated organosilane compounds and electron beam irradiation.
Abstract:
Described herein is a pressure sensitive adhesive is comprising: (a) a high molecular weight (meth)acrylate polymer wherein the high molecular weight (meth)acrylate polymer is derived from (i) a C4 to C24 (meth)acrylate ester monomer; and (ii) 0 to less than 10 wt % of a polar comonomer based on the weight of the high molecular weight (meth)acrylate polymer; and (b) 10 to 100 parts of a low molecular weight fluorinated polymer per 100 parts of the high molecular weight (meth)acrylate polymer, wherein the low molecular weight fluorinated polymer has a glass transition temperature (Tg) of less than 40°C. The low molecular weight fluorinated polymer is preferably derived from fluorinated (meth)acrylate, fluorinated (meth)acrylate comprising a sulfonylamide group, fluorinated vinyl monomers, fluorinated vinyl ethers, or fluorinated styrene.
Abstract:
Described herein is a low molecular weight fluorinated (meth)acrylate polymer comprising a plurality of pendent sulfonylamide groups, which is used as a tackifier in a pressure sensitive adhesive composition. Also described herein is a pressure sensitive adhesive composition comprising the low molecular weight fluorinated (meth)acrylate polymer, and articles comprising the pressure sensitive adhesive composition. The pressure sensitive adhesive preferably also comprises a high molecular weight polymer, which is derived from a (meth)acrylate monomer or is a fluoropolymer.