The present invention is directed to packaging laminates for containing a food or pharmaceutical/medical product which includes an exterior film, a multilayer interior film comprising a product-contact layer, a diisocyanate-scavenging layer and an exterior film-contact layer, and a polyurethane adhesive layer bonding the exterior film to the multilayer interior film. The present invention reduces the amount of any unreacted diisocyanate precursor and primary amines which can migrate to a product in packaging assemblies formed with a polyurethane adhesive. This is achieved when an interior film (commonly known as a sealant film) includes a layer comprising a polyether polyol which is not in direct contact with the polyurethane adhesive. With this approach, the polyether polyol reacts with any residua! diisocyanate and/or primary amines which migrates from the polyurethane adhesive through the laminated assembly and thus, neutralizes any potential undesirable effects of these compounds.

A fluorinated compound represented by D.sup.1-R.sup.f1OCH.sub.2(C.sub.mF.sub.2mO).sub.n-A (wherein D.sup.1 is CF.sub.3 or CF.sub.3O, R.sup.f1 is a C.sub.1-20 fluoroalkylene group containing at least one hydrogen atom, a C.sub.2-20 fluoroalkylene group containing at least one hydrogen atom and having an etheric oxygen atom between carbon-carbon atoms, etc., m is an integer of from 1 to 6, n is an integer of from 1 to 200, and A is a monovalent organic group having at least one (meth)acryloyl group), which is capable of imparting excellent antifouling properties (oily ink repellency, fingerprint stain removability) and lubricity to e.g. a hard coat layer; a hard coat layer-forming composition which contains such a fluorinated compound; and an article having a hard coat layer formed from such a composition.

Epoxy adhesives include a latent curing agent, a reactive toughener having capped isocyanate groups, and certain urea compounds. The toughener is made by chain extending and capping a mixture of isocyanate-terminated prepolymers. The prepolymers include an isocyanate-terminated polyether and an isocyanate-terminated diene polymer. The adhesives have excellent wash-off resistance and excellent ability to adhere to oily substrates.

A viscosity regulating composition and its method of manufacture. The composition comprises a mixture of (a) a branched polymer having the formula [M]-[(A.sup.1O)-L.sup.1-(A.sup.1O)R.sup.1].sub.n, wherein M is polybranched hydrophobe; A.sup.1O is a polyoxyalkylene unit; L.sup.1 is an aliphatic linking segment or an aromatic linking segment each having at least two hydroxyl reactive linking groups; and R.sup.1 is an aliphatic end unit or aromatic end unit having 6 to 32 carbon atoms; n ranges from 3 to 6; and (b) a polymer having the formula R.sup.2-(A.sup.2O)-L.sup.2-(A.sup.2O)R.sup.2, wherein (A.sup.2O) is a polyoxyalkylene unit, L.sup.2 is a aliphatic linking segment or an aromatic linking segment, and R.sup.2 is a aliphatic unit or an aromatic unit each having 6 to 32 carbon atoms.

The present invention relates to a process for the preparation of oligo(alkylene glycol)-functionalized polyisocyanopeptides comprising the steps of functionalizing an isocyanopeptide with oligo-(alkylene glycol) side chains and subsequently polymerizing the oligo-alkylene glycol-functionalized isocyanopeptides. Several isocyanopeptides may be functionalized with various linear or non-linear oligo-(alkylene glycol) side chains having variable chain length. The alkylene glycol may be selected from the group consisting of ethylene-, propylene-, butylene- or pentylene glycol. Preferably, the isocyanopeptides are functionalized with at least three ethylene glycol side chains. The peptides may comprise L-amino acids, D-amino acids or D, L-amino acids. The obtained oligoalkylene-functionalized polyisocyanopeptides are a new class of materials with unique thermo-responsive properties.

A hydrophilic polymer derivative having a benzylidene acetal linker whose hydrolysis rate at the pH of a weakly acidic environment in the living body can be accurately controlled. A hydrophilic polymer derivative having a benzylidene acetal linker, which is represented by the following formula (1):

##STR00001##

wherein R.sup.1 is a hydrogen atom or a hydrocarbon group; R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are each independently a hydrogen atom or a substituent and at least one of R.sup.3, R.sup.4, and R.sup.5 is an electron-withdrawing substituent or at least one of R.sup.2 and R.sup.6 represents a substituent; X.sup.1 is a chemically reactive functional group; P is a hydrophilic polymer; w is an integer of 1 to 8; and Z.sup.1 and Z.sup.2 are an independently selected divalent spacer.

Specific alkoxysily-modified polymers bearing alkoxysilyl groups distributed randomly or in block fashion along the polyether chain, and not just located at the chain termini, a process for preparing these alkoxysilyl-modified polymers, and compositions comprising these alkoxysilyl-modified polymers are provided.

Primer coating compositions include a thiol-terminated urethane-containing polyether prepolymer, a polyepoxide, calcium carbonate, and magnesium oxide. The coating compositions are useful as corrosion resistant primers in aerospace applications.

A hydrophilic polymer derivative having a benzylidene acetal linker whose hydrolysis rate at the pH of a weakly acidic environment in the living body can be accurately controlled. A hydrophilic polymer derivative having a benzylidene acetal linker, which is represented by the following formula (1): ##STR00001##
wherein R.sup.1 is a hydrogen atom or a hydrocarbon group; R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are each independently a hydrogen atom or a substituent and at least one of R.sup.3, R.sup.4, and R.sup.5 is an electron-withdrawing substituent or at least one of R.sup.2 and R.sup.6 represents a substituent; X.sup.1 is a chemically reactive functional group; P is a hydrophilic polymer; w is an integer of 1 to 8; and Z.sup.1 and Z.sup.2 are an independently selected divalent spacer.

The present invention provides a moisture-curing sealant comprising a) at least one silane-functional polymer and b) at least one catalyst for the crosslinking of the silane-functional polymer, said sealant being free of organotin compounds and having, in the cured state, a secant modulus at 100% elongation and 23 C., determined to ISO 8339, of less than 0.4 MPa and a resilience at 100% elongation, determined to ISO 7389, of greater than 70%. The sealant is especially suitable as a construction sealant of the 25LM class according to DIN EN ISO 11600, especially as a facade sealant, or as a sealant according to ASTM C719 Class 50.