A condensation curable gel composition is disclosed. The composition comprises: (i) at least one condensation curable silyl terminated polymer having at least one hydrolysable and/or hydroxyl functional group(s) per molecule; (ii) a cross-linker selected from the group of a silicone, an organic polymer, a monosilane or a disilane molecule which contains at least two hydrolysable groups per molecule; and (iii) a condensation catalyst selected from the group of titanates, zirconates or tin (II). The molar ratio of hydroxyl and/or hydrolysable groups in polymer (i) to hydrolysable groups from component (ii) is between 0.5:1 and 1:1 using a monosilane cross-linker or 0.75:1 to 3:1 using disilanes. The titanates and zirconates comprise M-OR functions where M is titanium or zirconium and R is an aliphatic hydrocarbon group. The molar ratio of M-OR or tin (II) functions to the hydroxyl and/or hydrolysable groups in polymer (i) is comprised between 0.01:1 and 0.5:1.

The present invention is directed to a vulcanizable rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr): 100 phr of at least one diene-based elastomer; from 1 to 80 phr of carbon black; from 40 to 120 phr of silica; from 1 to 20 parts by weight of a sulfur-containing organosilane per 100 parts by weight of the silica; from 0.1 to 10 phr of a tetrazine compound of formula 1

##STR00001##

where X.sup.1 and X.sup.2 each represent a heterocyclic group; and from 0.5 to 10 phr of a zinc complex compound of formula 2

##STR00002##

where R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen atoms, alkyl groups, alkylene groups, hydroxyl-substituted alkyl or alkylene groups, amine-substituted alkyl or alkylene groups, and thiol-substituted alkyl or alkylene groups.

The present invention is directed to a vulcanizable rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr): 100 phr of at least one diene-based elastomer; from 1 to 80 phr of carbon black; from 40 to 120 phr of silica; from 1 to 20 parts by weight of a sulfur-containing organosilane per 100 parts by weight of the silica; from 0.1 to 10 phr of a tetrazine compound of formula 1

##STR00001##

where X.sup.1 and X.sup.2 each represent a heterocyclic group; and from 0.5 to 10 phr of a zinc complex compound of formula 2

##STR00002##

where R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen atoms, alkyl groups, alkylene groups, hydroxyl-substituted alkyl or alkylene groups, amine-substituted alkyl or alkylene groups, and thiol-substituted alkyl or alkylene groups.

Provided are an adhesive for an endoscope, a cured product thereof, an endoscope including a member secured with the cured product, and a method for manufacturing the endoscope. The adhesive includes the following (a) to (c): (a) an epoxy resin including at least one of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin; (b) a polyamine compound having an oxygen atom but no amide bond in a molecule thereof; and (c) a metal alkoxide compound.

Provided are an adhesive for an endoscope, a cured product thereof, an endoscope including a member secured with the cured product, and a method for manufacturing the endoscope. The adhesive includes the following (a) to (c): (a) an epoxy resin including at least one of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin; (b) a polyamine compound having an oxygen atom but no amide bond in a molecule thereof; and (c) a metal alkoxide compound.

A coating composition for applying a very thin film coating to a substrate such as a polymeric film comprises a copolymer such as a block copolymer (BCP) that is compatible with the substrate, an alcohol solvent or solvents capable of dissolving the copolymer, a hydrolysed metal alkoxide precursor, a carboxylic acid stabiliser, and an active agent in an ionic, molecular, or small nanoparticle form. The active agent is configured to provide a functionality to the coating composition, selected from antimicrobial, antifungal, barrier, therapeutic, electrical, electronic, magnetic and optical. The composition is a sol comprising a continuous non-sedimentable/stable suspension of very small sized (of nano order) amorphous inorganic polymers in their oligomeric or polymeric state, and comprising the active agent dispersed in a hydrolysed metal alkoxide-BCP matrix. Substrates coated with very thin coatings are also provided, including coated LDPE which is activated before coating by UV/ozone, plasma or corona treatment prior to deposition of a wetting layer.

The present invention provides a gas barrier laminate having a laminated structure comprising a barrier layer, an inorganic material layer and a base material in this order, wherein the barrier layer includes a water-soluble resin and a condensate of hydrolyzed metal alkoxide, a ratio of an oxygen transmission rate (B) of the gas barrier laminate measured under conditions of a temperature of 40° C. and a relative humidity of 0% RH to an oxygen transmission rate (A) of the gas barrier laminate measured under conditions of a temperature of 23° C. and a relative humidity of 0% RH is 1.80 or less, and the oxygen transmission rate (B) is 1.00 (cc/(m.sup.2.Math.day.Math.atm)) or less.

The present invention provides a gas barrier laminate having a laminated structure comprising a barrier layer, an inorganic material layer and a base material in this order, wherein the barrier layer includes a water-soluble resin and a condensate of hydrolyzed metal alkoxide, a ratio of an oxygen transmission rate (B) of the gas barrier laminate measured under conditions of a temperature of 40° C. and a relative humidity of 0% RH to an oxygen transmission rate (A) of the gas barrier laminate measured under conditions of a temperature of 23° C. and a relative humidity of 0% RH is 1.80 or less, and the oxygen transmission rate (B) is 1.00 (cc/(m.sup.2.Math.day.Math.atm)) or less.

A metal-crosslinkable polymer composition and a metal crosslinked polymeric material having excellent curing rate and storage stability, and a metal member and a wiring harness to which the metal-crosslinkable polymer composition and the metal crosslinked polymeric material are applied. The metal-crosslinkable polymer composition includes an ingredient A which releases a metal ion when heated, and an ingredient B includes an organic polymer having a substituent group capable of forming an ionic bond with the metal ion released from the ingredient A. The metal-crosslinked polymeric material includes a crosslinked product of the metal-crosslinkable polymer composition. The metal member has a metal base member and a coating member covering a surface of the metal base member, where the coating member includes the metal-crosslinked polymeric material. The wiring harness includes the metal-crosslinked polymeric material.

A condensation curable gel composition is the disclosed. The composition comprises: (i) at least one condensation curable silyl terminated polymer having at least one hydrolysable and/or hydroxyl functional group(s) per molecule; (ii) a cross-linker selected from the group of a silicone, an organic polymer, a monosilane or a disilane molecule which contains at least two hydrolysable groups per molecule; and (iii) a condensation catalyst selected from the group of titanates, zirconates or tin (II). The molar ratio of hydroxyl and/or hydrolysable group(s) in polymer (i) to hydrolysable groups from component (ii) is between 0.5:1 and 1:1 using a monosilane cross-linker or 0.75:1 to 3:1 using disilanes. The titanates and zirconates comprise M-OR functions where M is titanium or zirconium and R is an aliphatic hydrocarbon group. The molar ratio of M-OR or tin (II) functions to the hydroxyl and/or hydrolysable groups in polymer (i) is comprised between 0.01:1 and 0.5:1.