The invention provides a contact lens manufacturing method comprising a process for removing unprocessed molded silicone hydrogel contact lenses from mold halves in a relatively efficient and consistent manner. A method of the invention comprising the steps of formulating a lens formulation by dissolving/blending all polymerizable components in a mixture a hydrophobic acrylic monomer as a reactive diluent and an organic solvent as a non-reactive diluent at a weight ratio of least 0.24 (reactive diluent over the sum of reactive and non-reactive solvents) per gram of the polymerizable composition and using a relatively low ultrasonic vibration energy for delensing. This method of the invention can be easily implemented in a production environment for enhancing the production yield.

The invention provides a contact lens manufacturing method comprising a process for removing unprocessed molded silicone hydrogel contact lenses from mold halves in a relatively efficient and consistent manner. A method of the invention comprising the steps of formulating a lens formulation by dissolving/blending all polymerizable components in a mixture a hydrophobic acrylic monomer as a reactive diluent and an organic solvent as a non-reactive diluent at a weight ratio of least 0.24 (reactive diluent over the sum of reactive and non-reactive solvents) per gram of the polymerizable composition and using a relatively low ultrasonic vibration energy for delensing. This method of the invention can be easily implemented in a production environment for enhancing the production yield.

The present invention provides coating composition for forming a toner receptive coating on a substrate containing a polymer comprising: (a) a N-vinyl amide monomer, (b) a vinyl acetate monomer, (c) a substituted or unsubstituted monomer comprising a cyclic ether, and (d) a solvent. The coating compositions may further comprise a (e) non-reactive hydrophobic monomer. The invention also provides substrates coated with the toner receptive coatings. ##STR00001##

The present invention provides coating composition for forming a toner receptive coating on a substrate containing a polymer comprising: (a) a N-vinyl amide monomer, (b) a vinyl acetate monomer, (c) a substituted or unsubstituted monomer comprising a cyclic ether, and (d) a solvent. The coating compositions may further comprise a (e) non-reactive hydrophobic monomer. The invention also provides substrates coated with the toner receptive coatings. ##STR00001##

The present invention provides coating composition for forming a toner receptive coating on a substrate containing a polymer comprising: (a) a N-vinyl amide monomer, (b) a vinyl acetate monomer, (c) a substituted or unsubstituted monomer comprising a cyclic ether, and (d) a solvent. The coating compositions may further comprise a (e) non-reactive hydrophobic monomer. The invention also provides substrates coated with the toner receptive coatings. ##STR00001##

Polyimide oligomer terminated with maleimide end groups may be cured by irradiation with UV light. The polyimide oligomer terminated with maleimide end groups may be cured in a polymerization mixture that includes a reactive diluent and optionally a photoinitiator. Due to the ability of the polyimide oligomer terminated with maleimide end groups to be cured with light applications the cured oligomer may be used in applications that require low temperatures.

Polyimide oligomer terminated with maleimide end groups may be cured by irradiation with UV light. The polyimide oligomer terminated with maleimide end groups may be cured in a polymerization mixture that includes a reactive diluent and optionally a photoinitiator. Due to the ability of the polyimide oligomer terminated with maleimide end groups to be cured with light applications the cured oligomer may be used in applications that require low temperatures.

A method for producing a fluoropolymer by solution polymerization or dispersion polymerization, the method including: in the presence of an initiator, a chain transfer agent, and a solvent, (i) homopolymerizing tetrafluoroethylene; or (ii) randomly copolymerizing tetrafluoroethylene and at least one of a monomer represented by the following formula (1) or a monomer represented by the following formula (2). The chain transfer agent includes at least one selected from dithioester compounds, dithiocarbamate compounds, trithiocarbonate compounds and xanthate compounds. The fluoropolymer contains 50 to 100 mol % of a polymerized unit based on the tetrafluoroethylene. The formula (1): CF.sub.2═CR.sup.1R.sup.2 wherein R.sup.1 and R.sup.2 are as defined herein, the formula (2): CH.sub.2═CR.sup.3R.sup.4 wherein R.sup.3 and R.sup.4 are as defined herein.

A method for producing a fluoropolymer by solution polymerization or dispersion polymerization, the method including: in the presence of an initiator, a chain transfer agent, and a solvent, (i) homopolymerizing tetrafluoroethylene; or (ii) randomly copolymerizing tetrafluoroethylene and at least one of a monomer represented by the following formula (1) or a monomer represented by the following formula (2). The chain transfer agent includes at least one selected from dithioester compounds, dithiocarbamate compounds, trithiocarbonate compounds and xanthate compounds. The fluoropolymer contains 50 to 100 mol % of a polymerized unit based on the tetrafluoroethylene. The formula (1): CF.sub.2═CR.sup.1R.sup.2 wherein R.sup.1 and R.sup.2 are as defined herein, the formula (2): CH.sub.2═CR.sup.3R.sup.4 wherein R.sup.3 and R.sup.4 are as defined herein.

The invention relates to an aqueous pigmented coating composition containing at least one polymer P1 in the form of an aqueous polymer dispersion, and at least one water-soluble polymer P2 that is composed of ethylenically unsaturated monomers M and contains at least 30% by weight of polymerized N-vinylpyrrolidone in relation to the total amount of monomers M. The invention further relates to the use of the aqueous pigmented coating compositions of the invention for coating tannin-containing substrates, a coating method, and the coated substrates.