Abstract: The present invention relates to an oxyalkylene polymer including: a polyoxyalkylene chain containing an oxyethylene group; and a reactive silicon group which is bonded to the polyoxyalkylene chain via an organic group containing one group represented by —C(?O)NH—, wherein a number average molecular weight is from 3,000 to 150,000, a molecular weight distribution is 2.00 or less, an amount of the oxyethylene group is from 3 to 90% by mass, and the number of the reactive silicon groups per molecule is 0.5 or more.

Abstract: The curable composition is a curable composition containing an oxyalkylene polymer A having a reactive silicon group represented by —SiRa(X)3-a, wherein the oxyalkylene polymer A has 6 or more terminal groups per molecule; the terminal group contains at least one selected from the group consisting of a reactive silicon group represented by —SiRa(X)3-a, an active hydrogen-containing group, and an unsaturated group; the oxyalkylene polymer A has 0.3 or more reactive silicon groups per terminal group; and the number average molecular weight of the oxyalkylene polymer A is more than 25,000 and not more than 100,000.

Abstract: An odorless curable composition containing a hydrolyzable silyl group-containing urethane compound with good storage stability is provided. A curable composition comprising 100 parts by mass of a polymer (P) obtained by a urethane-forming reaction of a polymer (pP) having a polyoxyalkylene chain and hydroxyl groups and a compound (U) represented by the following formula (I): (wherein X1 is a C1-6 alkoxy group, R1 is a monovalent C1-20 organic group (other than an alkoxy group) which may have a substituent, each of R2 and R3 is independently a C1-10 alkyl group or a hydrogen atom, and a is an integer of from 1 to 3) in the presence of a urethane-forming catalyst and from 0.0001 to 0.1 part by mass of an inorganic acid or an organic acid having an active hydrogen bonded to an oxygen atom.

Abstract: An odorless curable composition containing a hydrolyzable silyl group-containing urethane compound with good storage stability is provided. A curable composition comprising 100 parts by mass of a polymer (P) obtained by a urethane-forming reaction of a polymer (pP) having a polyoxyalkylene chain and hydroxyl groups and a compound (U) represented by the following formula (I): Si(X1)m(R1)3-m-Q-NCO ??(I) (wherein Q is a C2-20 bivalent linear hydrocarbon group, X1 is a C1-6 alkoxy group, R1 is a C1-6 alkyl group, and m is an integer of from 1 to 3) in the presence of a urethane-forming catalyst and from 0.0001 to 0.1 part by mass of an inorganic acid or an organic acid having an active hydrogen bonded to an oxygen atom.

Abstract: To provide a curable composition comprising a polymer having a reactive silicon group as a curing component, containing no or substantially no organic metal compound, and having a high curing rate. A curable composition comprising a polymer (A) having a reactive silicon group as a curing component and comprising an amidine derivative salt (B) represented by the following formula (2) as a curing catalyst: wherein R2 is a hydrocarbon group or a hydrogen atom, each of R3 and two R4's which are independent of one another, is an organic group or a hydrogen atom, R5 is a C1-25 hydrocarbon group or a hydrogen atom, and X2 is an organic acid ion, an inorganic acid ion or a hydroxy group, and optional two or more of R2, R3 and two R4's may be bonded to form a cyclic structure.

Abstract: A curable composition having a low viscosity and good workability which can give a mechanically strong cured product is provided. A curable composition comprising a curable resin component containing a polymer (A) having a polyoxyalkylene chain, a reactive silicon group and a urethane bond in the molecule and at least one silicate mineral (X) selected from the group consisting of a silicate mineral (B) represented by Al2O3.2SiO2.nH2O (wherein n is from 0 to 4) and a calcined silicate mineral (C) obtained by calcining the silicate mineral at 350 to 1,200° C.

Abstract: To provide a curable composition which has a high curing rate and can provide a cured product having good durability. A curable composition comprising an oxyalkylene polymer (A) having a reactive silicon group represented by the following formula (1), and a quaternary ammonium salt (B): —SiX1aR13-a??(1) wherein R1 is a C1-20 monovalent organic group which may have a substituent, X1 is a hydroxyl group or a hydrolyzable group, and a is an integer of from 1 to 3; provided that when plural R1s are present, they may be the same or different from one another, and when plural X1s are present, they may be the same or different from one another.

Abstract: To provide a room-temperature-curable composition which comprises an oxyalkylene polymer containing hydrolyzable silicon groups, which has ensured working time and curing rate required for operation, and which can provide a cured article having good tensile properties. A room-temperature-curable composition comprising a polymer (a1) and a curing catalyst (b), wherein the polymer (a1) is a linear oxyalkylene polymer having at least two hydrolyzable silicon groups of the formula (1), at different molecular terminals: —Si(OR)3??(1) wherein each R independently represents a C1-6 organic group.

Abstract: To provide a curable composition comprising a polymer having a reactive silicon group as a curing component, containing no or substantially no organic metal compound, and having a high curing rate. A curable composition comprising a polymer (A) having a reactive silicon group as a curing component and comprising an amidine derivative salt (B) represented by the following formula (2) as a curing catalyst: wherein R2 is a hydrocarbon group or a hydrogen atom, each of R3 and two R4's which are independent of one another, is an organic group or a hydrogen atom, R5 is a C1-25 hydrocarbon group or a hydrogen atom, and X2 is an organic acid ion, an inorganic acid ion or a hydroxy group, and optional two or more of R2, R3 and two R4's may be bonded to form a cyclic structure.

Abstract: To provide a curable composition which has a high curing rate and can provide a cured product having good durability. A curable composition comprising an oxyalkylene polymer (A) having a reactive silicon group represented by the following formula (1), and a quaternary ammonium salt (B): —SiX1aR13-a??(1) wherein R1 is a C1-20 monovalent organic group which may have a substituent, X1 is a hydroxyl group or a hydrolyzable group, and a is an integer of from 1 to 3; provided that when plural R1s are present, they may be the same or different from one another, and when plural X1s are present, they may be the same or different from one another.

Abstract: To provide a room-temperature-curable composition which comprises an oxyalkylene polymer containing hydrolyzable silicon groups, which has ensured working time and curing rate required for operation, and which can provide a cured article having good tensile properties. A room-temperature-curable composition comprising a polymer (a1) and a curing catalyst (b), wherein the polymer (a1) is a linear oxyalkylene polymer having at least two hydrolyzable silicon groups of the formula (1), at different molecular terminals: —Si(OR)3 ??(1) wherein each R independently represents a C1-6 organic group.