The invention relates to a curable composition having an electron deficient olefin.

Free-standing non-fouling polymers and polymeric compositions, monomers and macromonomers for making the polymers and polymeric compositions, objects made from the polymers and polymeric compositions, and methods for making and using the polymers and polymeric compositions.

The two-part curable composition has excellent curability, and exhibits flexibility and adhesion durability. The two-part curable composition includes a first reagent containing at least a 2-cyanoacrylic acid ester and a second reagent containing at least a polymer having a hydrolyzable silyl group, in which an elastomer and a curing catalyst for the above polymer are each contained in at least one of the first and second reagents in predetermined amounts. A preferable curing catalyst is a compound having a metal element and an organic group bonded to the metal element via oxygen, or an acid having a pKa of 4 or lower at 25 C. Preferably, a curing accelerator for 2-cyanoacrylic acid ester is contained in at least one of the first and second reagents.

A medical adhesive with good biodegradable performance capable of undergoing crosslinking copolymerization, comprising a mono-alpha-cyanoacrylate and a bis-alpha-cyanoacrylic acid diol ester monomer molecule. The olefinic bonds in the mono-alpha-cyanoacrylate structure are polymerized in the presence of infinitesimal anions to form a solid 3D high polymer; the 3D high polymer is provided with degradation sites on the web-like backbone chain, with clear degradation path and absorbable degradation products. The medical adhesive can be used for wound adhesive, large area wound hemostasia, and visceral and soft tissue wound closure.

A medical adhesive with good biodegradable performance capable of undergoing crosslinking copolymerization, comprising a mono-alpha-cyanoacrylate and a bis-alpha-cyanoacrylic acid diol ester monomer molecule. The olefinic bonds in the mono-alpha-cyanoacrylate structure are polymerized in the presence of infinitesimal anions to form a solid 3D high polymer; the 3D high polymer is provided with degradation sites on the web-like backbone chain, with clear degradation path and absorbable degradation products. The medical adhesive can be used for wound adhesive, large area wound hemostasia, and visceral and soft tissue wound closure.

This invention relates to cyanoacrylate-containing compositions, which when cured provide improved heat resistance.

This invention relates to cyanoacrylate-containing compositions, which when cured provide improved heat resistance.

Provided is an optical laminate which has high absorption selectivity to short-wavelength visible light having wavelengths around 400 nm and hence high light fastness and can impart better display characteristics when used for a display device. The optical laminate comprises at least one polarizing plate and at least one pressure-sensitive adhesive layer and satisfying the following formulae (1) and (2):

A(400)0.5(1)

A(420)/A(400)0.3(2) where A(400) represents the absorbance of the optical laminate at a wavelength of 400 nm in the transmission direction of the polarizing plate and A(420) represents the absorbance of the optical laminate at a wavelength of 420 nm in the transmission direction of the polarizing plate.

A compound for an organic light-emitting device represented by Formula 1:

##STR00001##

wherein, in Formula 1,

A.sub.1 is selected from an aromatic group and an aromatic group having extended -conjugation,

R.sub.1 is selected from hydrogen and a C.sub.1-C.sub.60 alkyl group,

L.sub.1 and L.sub.2 are each independently selected from O, S, a C.sub.1-C.sub.20 alkylene group, a C.sub.1-C.sub.20 oxyalkylene group, and a C.sub.1-C.sub.20 thioalkylene group; and a C.sub.1-C.sub.20 alkylene group, a C.sub.1-C.sub.20 oxyalkylene group, and a C.sub.1-C.sub.20 thioalkylene group, each substituted with at least one selected from a C.sub.1-C.sub.20 alkyl group and a C.sub.1-C.sub.20 alkoxy group,

n1 and n2 are each independently selected from 0, 1, 2, 3, 4, and 5,

R.sub.2 and R.sub.3 are each independently selected from hydrogen and a first cross-linking group, provided that at least one of R.sub.2 and R.sub.3 is the first cross-linking group, and

X is selected from F, Cl, Br, and I.

This invention relates to cyanoacrylate-containing compositions, which when cured provide improved heat resistance.