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.

The present invention provides a chlorine-containing resin composition capable of providing a processed product that is excellent in thermal stability and heat resistance and that has various excellent properties derived from the chlorine-containing resin in an efficient, easy, simple, and high-yield manner, without degrading the appearance of the processed product. The present invention also provides a method for providing such a processed product. The present invention relates to a chlorine-containing resin composition containing a chlorine-containing resin, a hydrotalcite powder, and organic acid zinc, wherein the hydrotalcite powder contains magnesium (Mg) and/or zinc (Zn), and aluminum (Al), the molar ratio of the total amount of magnesium and zinc to the amount of aluminum ((Mg+Zn)/Al) is 2.20 or less, and the hydrotalcite powder has an oil absorption of 30 ml/100 g or less.

The present invention provides a chlorine-containing resin composition capable of providing a processed product that is excellent in thermal stability and heat resistance and that has various excellent properties derived from the chlorine-containing resin in an efficient, easy, simple, and high-yield manner, without degrading the appearance of the processed product. The present invention also provides a method for providing such a processed product. The present invention relates to a chlorine-containing resin composition containing a chlorine-containing resin, a hydrotalcite powder, and organic acid zinc, wherein the hydrotalcite powder contains magnesium (Mg) and/or zinc (Zn), and aluminum (Al), the molar ratio of the total amount of magnesium and zinc to the amount of aluminum ((Mg+Zn)/Al) is 2.20 or less, and the hydrotalcite powder has an oil absorption of 30 ml/100 g or less.

According to one or more embodiments, a method of making an antifouling coating includes forming a polythioaminal polymer by reacting a fluorinated primary amine with an aldehyde to form an intermediate imine, and then reacting the intermediate imine with a dithiol. The method further includes depositing the polythioaminal on a substrate, and increasing a temperature of the polythioaminal deposited on the substrate to crosslink the polythioaminal and increase a contact angle of the substrate with crosslinked polythioaminal.

According to one or more embodiments, a method of making an antifouling coating includes forming a polythioaminal polymer by reacting a fluorinated primary amine with an aldehyde to form an intermediate imine, and then reacting the intermediate imine with a dithiol. The method further includes depositing the polythioaminal on a substrate, and increasing a temperature of the polythioaminal deposited on the substrate to crosslink the polythioaminal and increase a contact angle of the substrate with crosslinked polythioaminal.

A block copolymer of the formula R.sub.f-PEG-PAA is disclosed, where R.sub.f comprises a perfluoroalkyl group having at least 3 carbon atoms, bound to an ether oxygen atom directly or through a substituted or unsubstituted alkylene group, PEG is a poly(alkylene glycol) unit having a weight average molecular weight or number average molecular weight of from 1 to 20 kDa, and PAA is one or more poly([meth]acrylic acid) units having a total weight average molecular weight or number average molecular weight of from 0.3 to 10 kDa. A polymer mixture including the block copolymer, a co-hydrogel and a drug delivery vehicle including the polymer mixture, and methods of synthesizing the block copolymer, forming a sol-gel two-phase co-hydrogel, forming a drug delivery vehicle, and delivering a drug to a patient in need thereof are also disclosed.

A block copolymer of the formula R.sub.f-PEG-PAA is disclosed, where R.sub.f comprises a perfluoroalkyl group having at least 3 carbon atoms, bound to an ether oxygen atom directly or through a substituted or unsubstituted alkylene group, PEG is a poly(alkylene glycol) unit having a weight average molecular weight or number average molecular weight of from 1 to 20 kDa, and PAA is one or more poly([meth]acrylic acid) units having a total weight average molecular weight or number average molecular weight of from 0.3 to 10 kDa. A polymer mixture including the block copolymer, a co-hydrogel and a drug delivery vehicle including the polymer mixture, and methods of synthesizing the block copolymer, forming a sol-gel two-phase co-hydrogel, forming a drug delivery vehicle, and delivering a drug to a patient in need thereof are also disclosed.

By using a graft polymer comprising a dendritic polymer with a styrene skeleton and a hydrophilic polymer grafted to a terminal thereof, a temperature-responsive substrate for cell culture having a temperature-responsive surface for cell culture that allows cells to be cultured with high efficiency and which yet allows cultured cells to be exfoliated in a short period of time and with high efficiency by simply changing the temperature of the substrate surface can be prepared conveniently. If this temperature-responsive substrate for cell culture is used, cells obtained from a variety of tissues can be cultured with high efficiency. If this culture method is utilized, cultured cells can be exfoliated intact in a short amount of time with high efficiency. In addition, by using this graft polymer, a wide range of peptides and proteins can also be separated by simply changing the temperature of a chromatographic carrier. This allows for convenient separation procedure and improves the efficiency of separating operations. What is more, the stereoregularity of the dendritic polymer per se may be utilized to enable separation of solutes based on differences in their molecular structures.

By using a graft polymer comprising a dendritic polymer with a styrene skeleton and a hydrophilic polymer grafted to a terminal thereof, a temperature-responsive substrate for cell culture having a temperature-responsive surface for cell culture that allows cells to be cultured with high efficiency and which yet allows cultured cells to be exfoliated in a short period of time and with high efficiency by simply changing the temperature of the substrate surface can be prepared conveniently. If this temperature-responsive substrate for cell culture is used, cells obtained from a variety of tissues can be cultured with high efficiency. If this culture method is utilized, cultured cells can be exfoliated intact in a short amount of time with high efficiency. In addition, by using this graft polymer, a wide range of peptides and proteins can also be separated by simply changing the temperature of a chromatographic carrier. This allows for convenient separation procedure and improves the efficiency of separating operations. What is more, the stereoregularity of the dendritic polymer per se may be utilized to enable separation of solutes based on differences in their molecular structures.

The present invention relates to halogenated containing polymer composition with a modifier that is a polymeric processing aid in form a non dusty polymer powder made by a multistage process while the last stage uses ethyl acrylate as major monomer.