A polyurethane foam based on MDI (diphenylmethane diisocyanate) and on a polyol with an ethylene oxide content of greater than 50%, is made by mixing, under pressure, to form a foaming liquid precursor of polyurethane foam: a first reactive liquid, referred to as liquid A, comprising (a) a urethane prepolymer based on a first portion of the MDI and on a first portion of said polyol, and (b) the second portion of the MDI in the free state, said prepolymer being dissolved in this second portion of MDI and a second reactive liquid, referred to as liquid B, comprising the second portion of said polyol and water as foaming agent. The amount of said polyol in the liquid B represents between 25% and 75% by weight of the total of said polyol; this method is advantageously used for casting a polyurethane foam into the cavity of a tire casing.

A crosslinked rubber is produced by crosslinking a polymer composition containing 100 parts by weight of a rubber component containing a cyclopentene ring-opening polymer and 20 to 200 parts by weight of carbon black, wherein, when the crosslinked rubber is subjected to an ozone treatment in which the rubber is maintained at 40 C. and an ozone concentration of 50 pphm for 144 hours under a 20% tensile strain, the crosslinked rubber shows a rate of change in tensile strength before and after ozone treatment of within 70%.

The present invention relates to the synthesis of polymer polyols in unsaturated polyols as liquid phase, polymer polyols and their use.

In the phenolic resin to be blended with rubber of the present invention, when the total peak area in a chemical shift measured by .sup.13C-NMR of 110 ppm or more and 160 ppm or less is taken as 100, the total peak area in 0 ppm or more and less than 60 ppm is 80 to 400 and the total peak area in 60 ppm or more and less than 110 ppm is 2 to 70.

Disclosed is a method comprising: a) dispersing lignin into an alcohol-containing compound having a boiling point in the range of 120 C. to 300 C. to form a lignin dispersion; and b) contacting the lignin dispersion with an alkylene carbonate, optionally in the presence of a basic compound, at a temperature in the range of from 120 C. to 200 C. and a period of time in the range of from 0.25 hours to 24 hours to form an alkoxylated lignin dispersion.

Disclosed herein are methods for degrading polyurethane foam from mounted polyurethane foam-containing tires, methods for separating a wheel from a mounted polyurethane foam-containing tire, methods for preparing a degradable foam-containing tire, and degradable foam-containing tires. The methods include applying a solution comprising at least one phosphorous oxoacid or an ester thereof to the polyurethane foam inside of a tire, incorporating a degradant comprising at least one phosphorous oxoacid or an ester thereof into the polyurethane foam, or both, and then heating to degrade the foam. Degradation of the foam allows for separation of the wheel from the rubber carcass of the tire.

A process comprising, consisting of, or consisting essentially of: foaming a reaction mixture containing at least one polyisocyanate and an isocyanate-reactive compound comprising at least one alkoxylated triazine-arylhydroxy-aldehyde condensate composition wherein the alkoxylated triazine-arylhydroxy-aldehyde condensate composition is a reaction product of a triazine-arylhydroxy-aldehyde condensate and at least one alkylene carbonate, is disclosed.

A process for the preparation of a novolac resorcinol resin is disclosed which includes a defined mixture of resorcinol, phenol, cashew nut shell liquid, an aldehyde, and an acid catalyst. More specifically, the resorcinol resin produced in accordance with the instant process contains less than 0.5 weight percent of resorcinol, 1.0 weight percent of phenol and less than 1.0 weight percent of cashew nut shell liquid components. The molar ratio of aldehyde in comparison to the combined resorcinol/phenol mixture is less than 1. The novolac resorcinol resins prepared according to this invention exhibit improved reinforcing properties, tackifying properties and adhesion properties, among others, and therefore are suitable in a variety of rubber applications. In addition, the instant process provides less fuming of the resorcinol thus offering improved safety and environmental advantages over the conventional methods for preparing similar resorcinol resins.

Provided is a rubber composition containing from 1 to 50 parts by mass of an organic microparticle having an average particle size of 0.001 to 100 m and having a crosslinked structure per 100 parts by mass of a diene rubber, the organic microparticle being a crosslinked microparticle of a copolymer formed from at least two types of segments having repeating units that are different each other, the at least two types of segments being formed from an oligomer or prepolymer having a functional group and having a molecular weight of 500 to 20000, and the functional group forming a crosslinked structure between the at least two types of segments.

An adhered composite includes (i) a polar thermoset substrate; (ii) optionally a primer layer disposed on the polar thermoset substrate; (iii) a first adhesive layer adhesively mated to the polar thermoset substrate, optionally with the primer layer disposed between the first adhesive layer and the polar thermoset substrate; (iv) a first layer of cured non-polar rubber adhesively mated to the first adhesive layer; (v) a second adhesive layer adhesively mated to the first layer of cured non-polar rubber; and (vi) a second layer of cured non-polar rubber forming an outer surface of the composite.