An oligomer, composition, and composite material employing the same are provided. The oligomer has a structure represented by Formula (I)

##STR00001##

wherein R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-20 alkyl group, C.sub.2-20 alkenyl group, C.sub.6-12 aryl group, C.sub.6-12 alkylaryl group, C.sub.5-12 cycloalkyl group, C.sub.6-20 cycloalkylalkyl group, alkoxycarbonyl group, or alkylcarbonyloxy group; R.sup.1 is not hydrogen when R.sup.2 is hydrogen; a is 0 or 1; n0; m1; n:m is from 0:100 to 99:1; the oligomer has a number average molecular weight of less than or equal to 12,000; and the repeat unit

##STR00002##

and the repeat unit

##STR00003##

are arranged in a random or block fashion.

The present invention provides a new class of thermosetting ring-opening metathesis polymerization materials based on norbornene and oxanorbornene dicarboximide moieties containing at least one acetal ester group linkage. The acetal ester group is degradable when subjected to heat or acidic aqueous hydrolysis. The polymerization materials can be used in reworkable thermosetting compositions. R1-Rs, X, and n are defined herein.

##STR00001##

The present invention provides a new class of thermosetting ring-opening metathesis polymerization materials based on norbornene and oxanorbornene dicarboximide moieties containing at least one acetal ester group linkage. The acetal ester group is degradable when subjected to heat or acidic aqueous hydrolysis. The polymerization materials can be used in reworkable thermosetting compositions. R1-Rs, X, and n are defined herein. ##STR00001##

The present invention provides polymer modified aqueous urea formaldehyde resin (UF resin) binder compositions useful in making a treated glass mat, e.g., for roofing shingles, wherein the polymer modifier is an multistage aqueous emulsion acorn copolymer comprising one protuberant polymer stage containing phosphorous acid groups and one or more other polymer stage comprising an addition copolymer incompatible with the protuberant polymer stage, wherein the multistage aqueous emulsion copolymer has a measured Tg of from 60 to 25 C., or, preferably from 31 30 to 12 C. and, further wherein the weight ratio of the total of monomers used to make the one or more other polymer stage to the total amount of monomers used to make the protuberant polymer stage ranges from 3:1 to 50:1, or, preferably, from 3:1 to 30:1 or, more preferably, from 3:1 to 20:1, or, even more preferably, from 8:1 to 12:1.

Disclosed are a photocurable composition which includes (A) a photocurable monomer and (B) a monomer represented by Formula 1, and an apparatus including a protective layers formed of the composition; ##STR00001##

Disclosed are a photocurable composition which includes (A) a photocurable monomer and (B) a monomer represented by Formula 1, and an apparatus including a protective layers formed of the composition; ##STR00001##

Disclosed is a polymer comprising a repeating unit represented by Chemical Formula 1, or a polymer comprising a repeating unit represented by Chemical Formula 2: ##STR00001##
wherein R.sub.1, R.sub.2, x and y are as defined herein.

Disclosed is a polymer comprising a repeating unit represented by Chemical Formula 1, or a polymer comprising a repeating unit represented by Chemical Formula 2: ##STR00001##
wherein R.sub.1, R.sub.2, x and y are as defined herein.

A method of preparing a branched polymer comprises the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The average length of each vinyl polymer chain within the product is short.

Polymers comprising a plurality of cannabinoids, methods of preparation thereof, and methods of use to treat a number of disease conditions are reported. Also provided are polymer coatings, films, fibers, and non-woven fabrics for a variety of topical applications including stents, bandages, sutures, and transdermal patches.