Foam compositions are provided. The compositions are prepared from multi-functional acetoacetate esters and multi-functional amines or acrylates. The foam compositions can include one or more additives. The foam compositions can be used for home and commercial insulation, air sealing, sound proofing, structural improvement, and exterior roofing, among other applications. The foam compositions provide advantages of being isocyanate free and offer reduced exposure to isocyanate.

Foam compositions are provided. The compositions are prepared from multi-functional acetoacetate esters and multi-functional amines or acrylates. The foam compositions can include one or more additives. The foam compositions can be used for home and commercial insulation, air sealing, sound proofing, structural improvement, and exterior roofing, among other applications. The foam compositions provide advantages of being isocyanate free and offer reduced exposure to isocyanate.

With a photocurable composition for film formation which comprises a polymer containing a repeating unit structure having a triazine ring, for example, one represented by the following formula (17), a crosslinking agent, an ultraviolet absorber, and a light stabilizer, it is possible to produce a cured film which has a high refractive index and satisfactory weatherability ##STR00001##

Foam compositions are provided. The compositions are prepared from multi-functional acetoacetate esters and multi-functional amines or acrylates. The foam compositions can include one or more additives. The foam compositions can be used for home and commercial insulation, air sealing, sound proofing, structural improvement, and exterior roofing, among other applications. The foam compositions provide advantages of being isocyanate free and offer reduced exposure to isocyanate.

Foam compositions are provided. The compositions are prepared from multi-functional acetoacetate esters and multi-functional amines or acrylates. The foam compositions can include one or more additives. The foam compositions can be used for home and commercial insulation, air sealing, sound proofing, structural improvement, and exterior roofing, among other applications. The foam compositions provide advantages of being isocyanate free and offer reduced exposure to isocyanate.

A poly(etherimide) includes repeating units derived from polymerization of a biphenol dianhydride and an organic diamine. A method of making the poly(etherimide) includes contacting the biphenol dianhydride and the organic diamine under conditions effective to provide a poly(etherimide). The poly(etherimide) can be useful in a variety of articles, for example in an optoelectronic component.

A resin film is provided. When the resin film is characterized by Fourier transform infrared spectroscopy (FTIR), the Fourier transform infrared spectrum of the resin film has a signal intensity A from 2205 cm.sup.?1 to 2322 cm.sup.?1 and a signal intensity B from 1472 cm.sup.?1 to 1523 cm.sup.?1, and 0.70?A/B?1.95.

A resin film is provided. When the resin film is characterized by Fourier transform infrared spectroscopy (FTIR), the Fourier transform infrared spectrum of the resin film has a signal intensity A from 2205 cm.sup.?1 to 2322 cm.sup.?1 and a signal intensity B from 1472 cm.sup.?1 to 1523 cm.sup.?1, and 0.70?A/B?1.95.

Some variations provide a polyoxalamide polymer comprising: one or more first segments containing at least one repeat unit that includes (i) a branched, aliphatic hydrocarbon species and (ii) first amide groups at internal ends of the repeat unit, wherein the first amide groups are part of oxalamide groups; one or more polymer end groups containing second amide groups that are each covalently bonded directly to one of the first amide groups, wherein the second amide groups are also part of the oxalamide groups, and wherein the oxalamide groups contain NC(?O)C(O)N-sequences; and a reacted form of one or more multifunctional amine chain extenders or crosslinkers with an amine functionality of 3 or greater. The polyoxalamide polymer may be present in a lens, a window, a coating, or a film, for example. The polyoxalamide polymer may have UV transparency, visual transparency, NIR transparency, MWIR transparency, and/or LWIR transparency.

A polymer including reacted units of 1,3,5-trihydroxybenzene and a compound A represented by Formula (I) below,

##STR00001##

in Formula (I), n=0-5. Compound A is bonded to the 1,3,5-trihydroxybenzene through an azo bond to form the polymer, represented by Formula (II) below,

##STR00002##

Formula (II), represents a repeating unit of the polymer.