The present invention relates to a method for producing polyether carbonates containing alkoxysilyl groups in which (a) an unsaturated polyether carbonate polyol is reacted with (b) an alkoxysilane compound of formula (II) Si(X).sub.m(R1).sub.n(R2).sub.o (II), where X=H, Y—S—H and Y=C1-C22 alkylene, C6-C14 arylene, C7-C14 aralkylene, C7-C14 alkylarylene; R1=C1-C8 alkoxy, C7-C20-aralkoxy, C6-C14 aroxy, C7-C20 alkylaroxy; R2=C1-C22 alkyl, C6-C14 aryl, C7-C14 aralkyl, C7-C14 alkylaryl, and m and n represent, independently of one another, an integer ≧1, o is zero or an integer ≧1 and m+n+o=4. The invention further relates to the production of a polyurethane polymer using such a polyether carbonate, a cross-linked, siloxane group containing polymer and a molded part containing or consisting of said cross-linked polymer.

A method for producing a polycarbonate copolymer which has siloxane constituent units represented by any of formulae (1-1)′ to (1-4)′ and prescribed polycarbonate constituent units, the method having a polymerization step for polymerizing a silane-based compound selected from among a prescribed diaryloxysilane compound, a prescribed dialkoxysilane compound and a prescribed silicon compound, a carbonate compound and a diol compound such as an aromatic diol compound or an alicyclic diol compound in the presence of a transesterification catalyst. The polymerization step is carried out in a molten state under reduced pressure while removing alcohols derived from the carbonate compound.

##STR00001##

A moisture-curable silylated resin is derived from a copolycarbonate diol prepared from diol(s) of specific types.

A method for producing a polycarbonate copolymer which has siloxane constituent units represented by any of formulae (1-1) to (1-4) and prescribed polycarbonate constituent units, the method having a polymerization step for polymerizing a silane-based compound selected from among a prescribed diaryloxysilane compound, a prescribed dialkoxysilane compound and a prescribed silicon compound, a carbonate compound and a diol compound such as an aromatic diol compound or an alicyclic diol compound in the presence of a transesterification catalyst. The polymerization step is carried out in a molten state under reduced pressure while removing alcohols derived from the carbonate compound.

##STR00001##

A resin composition containing an organic resin (i) containing carboxylic acid ester and/or ether functional groups and optionally other halo groups, amino groups, hydroxyl groups, carboxylic acid groups and cyano groups and a moisture-curable silylated polycarbonate resin (ii) derived from a copolycarbonate diol, prepared from diol(s) having even numbers of carbon atoms and odd number of carbon atoms and coatings formulated using these resin compositions.

The present invention encompasses polymer compositions comprising aliphatic polycarbonate chains containing functional groups that increase the polymer's ability to wet or adhere to inorganic materials. In certain embodiments, chain ends of the aliphatic polycarbonates are modified to introduce silicon-containing functional groups, boron-containing functional groups, phosphorous-containing functional groups, sulfonic acid groups or carboxylic acid groups.

The present invention relates to a method for producing an organooxysilyl-crosslinked polymer by reacting a polyether carbonate polyol which contains carbon-carbon double bonds with a polysiloxane compound in the presence of a suitable catalyst. Suitable polysiloxane compounds have at least two Si—H bonds. This invention also relates to organooxysilyl-crosslinked polymers which are formed by this process.

The present invention relates to a method for producing an organooxysilyl-crosslinked polymer by reacting a polyether carbonate polyol which contains carbon-carbon double bonds with a polysiloxane compound in the presence of a suitable catalyst. Suitable polysiloxane compounds have at least two Si—H bonds. This invention also relates to organooxysilyl-crosslinked polymers which are formed by this process.

The invention relates to a method for producing a polymer which contains organooxysilyl end groups. The method first has the step of reacting a polyoxyalkylene polyol which contains carbon-carbon multiple bonds with a organooxysilyl compound of the formula Si(X)n(R)4-n in the presence of a catslyst, wherein X independently of one another represents C1-C8-alkoxy, C7-C20-aralkoxy, C6-C14-aroxy, C7-C20-alkylaroxy, C1-C20-acyloxy; R independently of one another represents a saturated or unsaturated C1-C22-alkyl, C6-C14-aryl, C7-C14-aralkyl, C7-C14-alkylaryl; and n is 2, 3, or 4. The invention additionally relates to a method for producing an elastomer precursor from the polymer which contains organooxysilyl end groups and to products which can be obtained using said method.

The present invention provides silicon-based polycarbonates, processes for their preparation and their use in the synthesis of copolymers, in particular segmented copolymers such as polyurethanes for biomedical applications.