A moisture-curable composition is shown and described herein. The moisture-curable composition comprises a moisture-curable resin and a moisture scavenger selected from a cyanoalkylalkoxysilane. The inclusion of the cyanoalkylalkoxysilane in the moisture-curable composition has been found to effectively scavenge moisture and control the rate of curing and viscosity increase in the composition.

A moisture-curable composition is shown and described herein. The moisture-curable composition comprises a moisture-curable resin and a moisture scavenger selected from a cyanoalkylalkoxysilane. The inclusion of the cyanoalkylalkoxysilane in the moisture-curable composition has been found to effectively scavenge moisture and control the rate of curing and viscosity increase in the composition.

A room-temperature-curable organopolysiloxane composition comprising (A) an organopolysiloxane resin which contains silanol groups in a specified amount and has a specified molecular weight and a specified three-dimensional net-like structure, (B) a hydrolyzable organosilane compound containing an organooxymethyl group and/or a partial hydrolysis-condensation product thereof, (C) a linear diorganopolysiloxane of which each molecule chain terminal is capped with a silanol group, and (D) a hydrolyzable to organosilane containing an amino group and/or a partial hydrolysis-condensation product thereof at specified content ratios can be produced easily and at low cost, and can be formed into a high-hardness cured article or coating film even when a metal compound that can serve as a condensation catalyst is not contained.

A room-temperature-curable organopolysiloxane composition comprising (A) an organopolysiloxane resin which contains silanol groups in a specified amount and has a specified molecular weight and a specified three-dimensional net-like structure, (B) a hydrolyzable organosilane compound containing an organooxymethyl group and/or a partial hydrolysis-condensation product thereof, (C) a linear diorganopolysiloxane of which each molecule chain terminal is capped with a silanol group, and (D) a hydrolyzable to organosilane containing an amino group and/or a partial hydrolysis-condensation product thereof at specified content ratios can be produced easily and at low cost, and can be formed into a high-hardness cured article or coating film even when a metal compound that can serve as a condensation catalyst is not contained.

A moisture-curable composition is shown and described herein. The moisture-curable composition comprises a moisture-curable resin and a moisture scavenger selected from a cyanoalkylalkoxysilane. The inclusion of the cyanoalkylalkoxysilane in the moisture-curable composition has been found to effectively scavenge moisture and control the rate of curing and viscosity increase in the composition.

A moisture-curable composition is shown and described herein. The moisture-curable composition comprises a moisture-curable resin and a moisture scavenger selected from a cyanoalkylalkoxysilane. The inclusion of the cyanoalkylalkoxysilane in the moisture-curable composition has been found to effectively scavenge moisture and control the rate of curing and viscosity increase in the composition.

The invention provides a process for preparing a mixture (M) which comprises silane-terminated polymers (SP1) of the general formula (I)

Y.sup.1—[O—C(═O)—NH—(CR.sup.1.sub.2).sub.b—SiR.sub.a(OR.sup.2).sub.3-a].sub.x  (I),

optionally silane-terminated polymers (SP2) of the general formula (II)

Y.sup.2—[O—C(═O)—NH—(CR.sup.1.sub.2).sub.b—SiR.sub.a(OR.sup.2).sub.3-a].sub.z  (II) and hydroxy-functional polymers (SP3) of the general formula (III)

Y.sup.2—[O—C(═O)—NH—(CR.sup.1.sub.2).sub.b—SiR.sub.a(OR.sup.2).sub.3-a].sub.z-z1(OH).sub.z1  (III) where Y.sup.1 and Y.sup.2 are polymer radicals and R, R.sup.1, R.sup.2, x, z, z1, a and b have the definitions indicated in claim 1, wherein, in a first process step, at least one polymer (HP1) of the general formula (IV)

Y.sup.1—[OH].sub.x  (IV) reacts with at least one isocyanate-functional silane (S) of the general formula (V)

O═C═N—(CR.sup.1.sub.2).sub.b—SiR.sub.a(OR.sup.2).sub.3-a  (V) to give silane-terminated polymers (SP1), and, in a second process step, the unreacted isocyanate groups of the isocyanate-functional silane (S) of the general formula (V) are reacted with at least one oligomer or polymer (HP2) of the general formula (VI)

Y.sup.2(OH).sub.z  (VI); polymer mixtures (M) preparable by the process; and use of the polymer mixtures (M) for producing adhesives and sealants and also coatings.

The invention provides a process for preparing a mixture (M) which comprises silane-terminated polymers (SP1) of the general formula (I)

Y.sup.1—[O—C(═O)—NH—(CR.sup.1.sub.2).sub.b—SiR.sub.a(OR.sup.2).sub.3-a].sub.x  (I),

optionally silane-terminated polymers (SP2) of the general formula (II)

Y.sup.2—[O—C(═O)—NH—(CR.sup.1.sub.2).sub.b—SiR.sub.a(OR.sup.2).sub.3-a].sub.z  (II) and hydroxy-functional polymers (SP3) of the general formula (III)

Y.sup.2—[O—C(═O)—NH—(CR.sup.1.sub.2).sub.b—SiR.sub.a(OR.sup.2).sub.3-a].sub.z-z1(OH).sub.z1  (III) where Y.sup.1 and Y.sup.2 are polymer radicals and R, R.sup.1, R.sup.2, x, z, z1, a and b have the definitions indicated in claim 1, wherein, in a first process step, at least one polymer (HP1) of the general formula (IV)

Y.sup.1—[OH].sub.x  (IV) reacts with at least one isocyanate-functional silane (S) of the general formula (V)

O═C═N—(CR.sup.1.sub.2).sub.b—SiR.sub.a(OR.sup.2).sub.3-a  (V) to give silane-terminated polymers (SP1), and, in a second process step, the unreacted isocyanate groups of the isocyanate-functional silane (S) of the general formula (V) are reacted with at least one oligomer or polymer (HP2) of the general formula (VI)

Y.sup.2(OH).sub.z  (VI); polymer mixtures (M) preparable by the process; and use of the polymer mixtures (M) for producing adhesives and sealants and also coatings.

Provided is a resin material capable of effectively enhancing insulation properties, adhesiveness and long-term insulation reliability. The resin material according to the present invention contains first inorganic particles having an average aspect ratio of 2 or less and an average circularity of 0.90 or less, second inorganic particles having an average aspect ratio of 2 or less and an average circularity of 0.95 or more, third inorganic particles having an average aspect ratio of more than 2, and a binder resin.

Provided is a resin material capable of effectively enhancing insulation properties, adhesiveness and long-term insulation reliability. The resin material according to the present invention contains first inorganic particles having an average aspect ratio of 2 or less and an average circularity of 0.90 or less, second inorganic particles having an average aspect ratio of 2 or less and an average circularity of 0.95 or more, third inorganic particles having an average aspect ratio of more than 2, and a binder resin.