摘要:
An inorganic-organic plastic having improved strength, elasticity, dimensional stability with increase in temperature and flame resistace and adapted for use in filling cracks and cavities and for making materials useful in the building industry is prepared by (1) premixing (c) an organic compound having at least two reactive hydrogen and at least one non-ionic hydrophilic group with (b) an aqueous silicate and then mixing the resulting mixture with (a) an organic polyisocyanate or (2) mixing (a), (b) and (c) simultaneously and reacting the mixture thus obtained to form a colloidal xerosol.
摘要:
Liquid organic polyisocyanates containing carboxyl and/or carboxylate groups are prepared by reacting liquid multicomponent mixtures of aromatic polyisocyanates having an isocyanato content of about 10 to about 20% by weight and a viscosity of about 8 cP to about 10,000 cP at 25.degree.C withA. a compound which contains carboxylate groups and hydrogen atoms which are reactive with isocyanate groups; orB. a hydroxycarboxylic or mercaptocarboxylic acid, wherebyBa. at least partial conversion of the carboxyl group into the corresponding carboxylate group by neutralization with a base is carried out simultaneously with or after the isocyanate addition reaction orBb. the hydroxycarboxylic acid or mercaptocarboxylic acid is of the kind in which the carboxyl groups are much less reactive with the isocyanate groups than are the hydroxyl or mercapto groups, the quantitative proportion of the reactants being so chosen that the products of the process have an isocyanate content of 10 to 40% by weight and a carboxyl or carboxylate group content of 0.1 to 10% by weight. The polyisocyanates can be used to make inorganic-organic plastics.
摘要:
A process is provided for making an inorganic-organic plastic having improved compression strength, elasticity, dimensional stability to heat and flame resistance wherein an organic polyisocyanate is reacted with an aqueous solution of an alkali metal silicate or aqueous silica sol in a mixture containing an organic amphiphilous compound having 1 to 9 carbon atoms, such as an alcohol. The product may be used as a constructional component of a building.
摘要:
Glass fibers for reinforcing thermoplastic resins are sized with an aqueous dispersion comprising a polyurethane-ionomer as a film-forming agent and a bonding agent comprising an epoxy-containing alkoxysilane. Advantageously the polyurethane is a very small particle ionomer and the bonding agent is selected from the group consisting of(a) an epoxyalkyl alkoxysilane+an aminoalkyl alkoxysilane,(b) an epoxyalkyl alkoxysilane+a low-molecular weight aliphatic primary or secondary mono-amine,(c) an aminoalkyl alkoxysilane+a low-molecular weight monoepoxide, and(d) an epoxyalkyl alkoxysilane.
摘要:
An inorganic-organic plastic having improved strength, elasticity, dimensional stability with increase in temperature and flame resistance and adapted for use in filling cracks and cavities and for making materials useful in the building industry is prepared by (1) premixing (c) an organic compound having at least one reactive hydrogen and at least one ionic group or at least one non-ionic hydrophilic group with (b) an aqueous silicate and then mixing the resulting mixture with (a) an organic polyisocyanate or (2) mixing (a), (b) and (c) simultaneously and reacting the mixture thus obtained to form a colloidal xerosol.
摘要:
This disclosure teaches a method of forming mineral mates by using an emulsion of water glass and isocyanates as the binder. This binder composition may be readily dispersed with air and has superior adhesion to mineral fibers.
摘要:
This invention relates to new aromatic uretdione-diisocyanate-disulphonic acids, to a process for the preparation thereof and to the use thereof as components for the production of polyurethane resins. More particularly, the instant invention relates new aromatic uretdione-diisocyanate-disulphonic acids of the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each represent a hydrogen, chlorine or bromine atom or a methyl, ethyl or C.sub.1 -C.sub.4 alkoxy group;x represents --O--, >C.dbd.O, >SO.sub.2, ##STR2## or --CH.dbd.CH-- wherein R.sub.7 and R.sub.8 each represent a hydrogen atom, a methyl or ethyl group or, when taken together with the carbon atom to which they are attached represent a cyclohexyl group; andn represents 0 or 1.These novel compounds are prepared by reacting a diisocyanate of general formula: ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, n and x are as defined above with SO.sub.3 at temperatures of from -30.degree. to +100.degree. C. in anhydrous solvents which are inert towards SO.sub.3 and isocyanate groups.
摘要:
Inorganic-organic compositions obtained from a mixture of components comprising:A. from 5-98% by weight of an organic polyisocyanateB. from 2-95% by weight of an aqueous alkali metal silicate solution containing about 20-70% by weight of said alkali metal silicateC. from 0-93% by weight of a water-binding component andD. from 1-30% by weight of a halogen or phosphorus containing compound,Based on the total weight of (a), (b), (c) with the proviso that when (c) is 0-20% by weight (a) contains 2-200 milliequivalents of ionic groups per 100 grams of said polyisocyanate. The products of the invention may be used in many forms including both porous and non-porous products as surface coatings having good adhesion and resistance to abrasion, as a mortar, and as a foam concrete for making molded products particularly in construction engineering and civil engineering as for building walls, igloos, road building and the like.
摘要:
Liquid and substantially non-crystalline aromatic polyisocyanate sulphonic acids or sulphonates and a process for the preparation thereof are disclosed which polyisocyanates are eminently suitable as presursors in the production of polyurethane foam resins and/or emulsifiers or wetting agents, hydraulic binders, thickening agents and cross-linking agents for vinyl polymers, polyurethanes, polyureas and polyamides.
摘要:
The instant invention is directed to a process for the production of inorganic-organic synthetic materials having high strength, elasticity, dimensional stability under heat, and flame resistance, consisting of a polymer-polysilicic acid gel composite material in the form of a solid/solid xerosol, said process comprising mixing(a) an organic polyisocyanate,(b) an aqueous basic solution and/or an aqueous basic suspension having an inorganic solid content of from 20-80% by weight preferably from 30-70% by weight,(c) a flowable inorganic compound and optionally(d) catalysts and other additives and allowing the resulting mixture to react, characterized in that mixing is carried out by first combining components (a) and (b), optionally with the addition of all or part of component (d), to form a stable primary dispersion and thereafter adding component (c), optionally the addition of all or part of component (d), to form a final dispersion.