Disclosed are methods, compositions, reagents, systems, and kits to prepare and utilize poly (β-amino ester) (PBAE) polymers, which are synthesized via Michael addition reactions of diacrylates and amines disclosed herein. Various embodiments utilize lactones and lactone derivatives to generate the diacrylate compounds. The PBAE polymers are shown to be effective biodegradable carriers for the delivery of an agent such as an organic molecule, inorganic molecule, nucleic acid, protein, peptide, polynucleotide, targeting agent, an isotopically labeled chemical compound, vaccine, or an immunological agent.

Disclosed are methods, compositions, reagents, systems, and kits to prepare and utilize poly (β-amino ester) (PBAE) polymers, which are synthesized via Michael addition reactions of diacrylates and amines disclosed herein. Various embodiments utilize lactones and lactone derivatives to generate the diacrylate compounds. The PBAE polymers are shown to be effective biodegradable carriers for the delivery of an agent such as an organic molecule, inorganic molecule, nucleic acid, protein, peptide, polynucleotide, targeting agent, an isotopically labeled chemical compound, vaccine, or an immunological agent.

There are provided a composition for sealing a coated electric wire, containing a 2-cyanoacrylate compound, which gives a cured product not only excellent in heat resistance, moisture heat resistance, and thermal shock resistance but also excellent in flex resistance, wherein the 2-cyanoacrylate compound contains more than 50 mass % to not more than 99 mass % of a 2-cyanoacrylate having an ether bond in an ester residue, and not less than 1 mass % to less than 50 mass % of at least one alkyl 2-cyanoacrylate selected from a group consisting of isopropyl cyanoacrylate and n-butyl cyanoacrylate, relative to 100 mass % of the total of the 2-cyanoacrylate compound; and further a coated electric wire covered by the composition.

A polymer electrolyte includes a polymer matrix including a polymer having a repeating unit represented by the formula

##STR00001##

and an ionic liquid. R.sup.1 to R.sup.3 are each one of a substituted or unsubstituted C.sub.1-C.sub.12 alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or combinations thereof. Each R.sup.4 is one of hydrogen, a halogen group, a nitrile group, a nitro group, an amine group, a substituted or unsubstituted C.sub.1-C.sub.10 alkyl group, a substituted or unsubstituted C.sub.1-C.sub.10 alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted C.sub.5-C.sub.14 heteroaryl group, or combinations thereof. Substituents of R.sup.1 to R.sup.4 are each one of a halogen group, a cyano group, a nitro group, a C.sub.1-C.sub.8 alkyl group, or combinations thereof, x is an integer of 1 to 8, and n is an integer of 60 to 3200.

A polymer electrolyte includes a polymer matrix including a polymer having a repeating unit represented by the formula

##STR00001##

and an ionic liquid. R.sup.1 to R.sup.3 are each one of a substituted or unsubstituted C.sub.1-C.sub.12 alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or combinations thereof. Each R.sup.4 is one of hydrogen, a halogen group, a nitrile group, a nitro group, an amine group, a substituted or unsubstituted C.sub.1-C.sub.10 alkyl group, a substituted or unsubstituted C.sub.1-C.sub.10 alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted C.sub.5-C.sub.14 heteroaryl group, or combinations thereof. Substituents of R.sup.1 to R.sup.4 are each one of a halogen group, a cyano group, a nitro group, a C.sub.1-C.sub.8 alkyl group, or combinations thereof, x is an integer of 1 to 8, and n is an integer of 60 to 3200.

A resin composition may include at least one urethane (meth)acrylate oligomer, at least one (meth)acrylate monomer, and at least one photoinitiator. The urethane (meth)acrylate oligomer may include a first urethane (meth)acrylate oligomer derived from a phosphate ester-containing polyol represented by Formula 1, and the first urethane (meth)acrylate oligomer may have a number-average molecular weight of about 805 to about 955. Accordingly, the resin composition may exhibit the characteristics of a low viscosity before being cured, and excellent or suitable shear modulus and peel strength after being cured.

##STR00001##

A resin composition may include at least one urethane (meth)acrylate oligomer, at least one (meth)acrylate monomer, and at least one photoinitiator. The urethane (meth)acrylate oligomer may include a first urethane (meth)acrylate oligomer derived from a phosphate ester-containing polyol represented by Formula 1, and the first urethane (meth)acrylate oligomer may have a number-average molecular weight of about 805 to about 955. Accordingly, the resin composition may exhibit the characteristics of a low viscosity before being cured, and excellent or suitable shear modulus and peel strength after being cured.

##STR00001##

Compositions for forming polymer layers useful in the manufacture of display devices, particularly flexible display, and methods of forming such devices are provided.

Compositions for forming polymer layers useful in the manufacture of display devices, particularly flexible display, and methods of forming such devices are provided.

Dust suppression compositions include at least one cationic or zwitterionic (meth)acrylate-based copolymer and at least one solvent, where the solvent can be water, an aqueous mixture, or one or more non-water solvents. The dust suppression composition can also include a plasticizer, generally glycerol. The dust suppression compositions are suitable for use with sand mixtures, especially silica sand mixtures.