Functionalized copolymers of isoolefins and conjugated diolefins, methods of preparing the copolymers, and their use as compatibilizers are disclosed. The diolefin monomer units of the co-polymer are modified at the CC double bond along the backbone of the copolymer to include an oxygen containing functional group such as epoxide, ester or alcohol. The functionalized copolymers improve the wettability of a non-hydrophilic surface towards hydrophilic polymer and allows for the formation of homogenous layers of the hydrophilic polymers. In particular, the spreading of a hydrophilic polymer on a non-hydrophilic substrate is facilitated by applying the co-polymers as an interfacial layer between the two incompatible materials. The resulting coated substrates exhibit resistance to protein adsorption and cell growth after grafting. The co-polymers are especially suited in the coating of biomedical devices where a high degree of uniformity of the coated surface is required.

The present invention provides a layered product comprising a release layer that can be formed from an aqueous coating liquid, that is quickly released from the substrate when alkaline treatment is performed, and that has excellent water resistance. The layered product of the present invention is a layered product comprising a release layer on a substrate, the release layer comprising a granular carboxylic anhydride-modified olefin resin and a binding part containing an acid group-free thermoplastic resin, the carboxylic anhydride-modified olefin resin having an average particle size of 0.5 to 20 ?m, the binding part having a thickness of 0.25 to 20 ?m, and the release layer having an actual acid value of 100 mg KOH/m.sup.2 or more.

The present invention provides a layered product comprising a release layer that can be formed from an aqueous coating liquid, that is quickly released from the substrate when alkaline treatment is performed, and that has excellent water resistance. The layered product of the present invention is a layered product comprising a release layer on a substrate, the release layer comprising a granular carboxylic anhydride-modified olefin resin and a binding part containing an acid group-free thermoplastic resin, the carboxylic anhydride-modified olefin resin having an average particle size of 0.5 to 20 ?m, the binding part having a thickness of 0.25 to 20 ?m, and the release layer having an actual acid value of 100 mg KOH/m.sup.2 or more.

The present invention relates to an article comprising a film affixed to a paper or paperboard substrate, wherein the film comprises a polyisobutylene and a polyolefin wherein the film has a thickness in the range of from about 3 ?m to 20 ?m. The article of the present invention is useful for providing desirable moisture barrier and tack properties.

The present invention relates to an article comprising a film affixed to a paper or paperboard substrate, wherein the film comprises a polyisobutylene and a polyolefin wherein the film has a thickness in the range of from about 3 ?m to 20 ?m. The article of the present invention is useful for providing desirable moisture barrier and tack properties.

An anti-corrosion composition includes a first compound including: a first polyisobutylene having an average relative molar mass ranging from about 30,000 to about 100,000 g/mole and a Staudinger index ranging from about 15-70 cm.sup.3/g, a first depolymerized butyl rubber with Brookfield viscosity at 66 C. ranging from about 400,000-2,000,000 mPa.Math.s and an average molecular weight ranging from about 20,000-60,000, and combinations thereof. A second compound includes a second polyisobutylene having an average relative molar mass ranging from about 900,000-6,500,000 g/mole and a Staudinger index ranging from about 240-900 cm.sup.3/g, at least one second partly cross-linked butyl rubber with a Mooney viscosity at 127 C. ranging from about 65-100 MU. The anti-corrosion composition includes at least one first or at least one second polyisobutylene as well as at least one first or at least one second butyl rubber.

An anti-corrosion composition includes a first compound including: a first polyisobutylene having an average relative molar mass ranging from about 30,000 to about 100,000 g/mole and a Staudinger index ranging from about 15-70 cm.sup.3/g, a first depolymerized butyl rubber with Brookfield viscosity at 66 C. ranging from about 400,000-2,000,000 mPa.Math.s and an average molecular weight ranging from about 20,000-60,000, and combinations thereof. A second compound includes a second polyisobutylene having an average relative molar mass ranging from about 900,000-6,500,000 g/mole and a Staudinger index ranging from about 240-900 cm.sup.3/g, at least one second partly cross-linked butyl rubber with a Mooney viscosity at 127 C. ranging from about 65-100 MU. The anti-corrosion composition includes at least one first or at least one second polyisobutylene as well as at least one first or at least one second butyl rubber.

The invention relates to a method to reduce or prevent agglomeration of polyisobutylene particles in aqueous media by LCST compounds and highly pure polyisobutylenes obtained thereby. The invention furthier relates to polyisobutylene products comprising the same or derived therefrom.

The invention relates to a method to reduce or prevent agglomeration of polyisobutylene particles in aqueous media by LCST compounds and highly pure polyisobutylenes obtained thereby. The invention furthier relates to polyisobutylene products comprising the same or derived therefrom.

A resin composition for sealing an electronic device and other things being capable of suppressing the permeation of water vapor is provided. The present invention includes a polybutadiene polymer represented by chemical formula (1) and having a (meth)acryloyl group at a terminal end; and a photopolymerization initiator, and does not include a thermoplastic resin having a mass-average molecular weight of 50,000 or more: ##STR00001##
wherein R.sup.1 and R.sup.2 each represent a hydroxyl group or H.sub.2C?C(R.sup.7)COO; R.sup.3 and R.sup.4 each represent a C1-C16 substituted or unsubstituted divalent organic group; R.sup.5, R.sup.6 and R.sup.7 each represent a hydrogen atom or a C1-C10 alkyl group, and at least one organic group represented by chemical formula (2) is included within chemical formula (1); l and m each represent 0 or 1; n represents an integer of 15-150; and x:y=0 to 100:100 to 0; R.sup.1 and R.sup.2 are never both a hydroxyl group. ##STR00002##