摘要:
A composition comprising a vinyl polymer having a crosslinkable silyl group may suffer from a delay in curing after the storage. The present invention relates to the following items. A curable composition comprising, as an essential component, (I) a vinyl polymer, which has at least one crosslinkable silyl group at the terminus and also has a monomer containing a methyl ester group as a constituent unit. A sealant, a liquid gasket, and an adhesive, wherein the above curable composition is used. A polymer has at least one crosslinkable functional group at the terminus and also has a vinyl polymer as a main chain thereof, wherein 2% to 80% by weight of monomers based on the total monomers constituting the main chain is methyl acrylate. A curable composition with improved storage stability, which comprises the following two components as essential components: (a) a vinyl polymer having at least one crosslinkable silyl group; and (b) a compound having a methyl ester group other than the compound (a).
摘要:
It is an object of the present invention to provide a curable which has good storage stability and can give cured products retaining the high elongation characteristic originating from the polyether polymer and showing a high gel fraction and good weatherability. Thus, the present invention provides a curable composition which comprises the following two components: a polyether polymer having at least one crosslinkable functional group and a vinyl polymer which is compatible with said polyether polymer having at least one crosslinkable functional group at a polymer terminus. Further, the present invention provides a curable composition which comprises the following three components: a polyether polymer having at least one crosslinkable functional group, a vinyl polymer incompatible with said polyether polymer and having at least one crosslinkable function group, and a compatibilizing agent capable of compatibilizing said polyether polymer and said vinyl polymer with each other when added to a mixture thereof.
摘要:
It is an object of the present invention to provide a curable which has good storage stability and can give cured products retaining the high elongation characteristic originating from the polyether polymer and showing a high gel fraction and good weatherability.Thus, the present invention provides a durable compositionwhich comprises the following two components:a polyether polymer having at least one crosslinkable functional group anda vinyl polymerwhich is compatible with said polyether polymer having at least one crosslinkable functional group at a polymer terminus.Further, the present invention provides a curable compositionwhich comprises the following three components:a polyether polymer having at least one crosslinkable functional group,a vinyl polymer incompatible with said polyether polymer and having at least one crosslinkable function group, anda compatibilizing agent capable of compatibilizing said polyether polymer and said vinyl polymer with each other when added to a mixture thereof.
摘要:
A curable composition comprises a polyether polymer having at least one crosslinkable functional group and a vinyl polymer compatible therewith having at least one crosslinkable functional group at a terminus. Another aspect includes a compatibilizing agent capable of compatibilizing the polyether polymer and vinyl polymer when added to the mixture thereof.
摘要:
The present invention has its object to provide an acrylic curable composition which is improved in tackiness, retention and other adhesive properties without reducing the thermal stability and weather resistance. The above-mentioned object can be solved by a curable composition which comprises, as an essential component, polymer (I), which is a (meth)acrylic acid ester copolymer having, in each molecule, at least one group represented by the general formula 1: —OC(O)C(Ra)═CH2 (1) (wherein Ra represents a hydrogen atom or a hydrocarbon group containing 1 to 20 carbon atoms) at a terminus of the molecular chain and is obtained by (co)polymerizing an (meth)acrylic acid alkyl ester the alkyl moiety of which contains 7 to 20 carbon atoms.
摘要:
A method for producing a (meth)acrylic polymer having crosslinkable silyl groups at the termini, comprising a step of adding a hydrosilane compound having a crosslinkable silyl group to an alkenyl-terminated (meth)acrylic polymer (A), which is prepared by atom transfer radical polymerization, in the presence of a platinum hydrosilylation catalyst. The amount of the platinum hydrosilylation catalyst is 0.1 to 10 mg on a platinum metal basis per kilogram of the alkenyl-terminated (meth)acrylic polymer (A). An object of the invention is to provide a method for producing a (meth)acrylic polymer having terminal crosslinkable silyl.
摘要:
The present invention provides a method for producing a vinyl polymer including the steps of polymerizing a vinyl monomer by atom transfer radical polymerization with a transition metal complex as a polymerization catalyst, and bringing the resultant vinyl polymer into contact with an adsorbent in the presence of an oxidizing agent; the vinyl polymer produced by the method; and a reactive composition susceptible to hydrosilylation containing the vinyl polymer produced by the method and having at least one alkenyl group per molecule.
摘要:
This invention provides a method for purification of a vinyl polymer which comprises the atom transfer radical polymerization of a vinyl monomer using a transition metal complex as the polymerization catalyst, said vinyl polymer being brought into contact with an oxidizing agent or a reducing agent.
摘要:
The present invention has for its object to provide a polymer available upon coupling of polymers of radical-polymerizable olefin monomer or monomers and a process for producing said polymer. The present invention is concerned with a method for effecting polymer-polymer coupling in the living radical polymerization of a radical-polymerizable olefin monomer which comprises adding a compound having at least two sparingly radical-polymerizable alkenyl groups during or after polymerization.
摘要:
The present invention provides: a process for preparing a vinyl polymer containing a halogen in an amount of 1,000 mg or less per kilogram, in which a vinyl polymer containing the halogen produced by atom transfer radical polymerization of a vinyl monomer is heated at a temperature in the range of 140 to 250° C. to dehalogenate the vinyl polymer; a vinyl polymer obtained by the process; and a hydrosilylation-reactive curable composition containing the vinyl polymer.