The invention provides a unique thermoset viscoelastomeric reaction product and a container combination comprised of the supportive base equipped with a thermoset viscoelastomer reaction product possessing unexpectedly superior adhesive and cohesive efficacy rendering it especially useful as an adhesive insert in a container combination. The thermoset insert bonds to any suitable supportive structure. The unique viscoelastomeric reaction product inserts adhesively immobilize items placed thereupon and adhesively or permanently bonds to most conventional containers. The tenacious cohesive and adhesive features of the insert allows for inverted stowage of stowed items. Due to the confining adhesive and cohesive attributes of the insert, structural supports of a flexible or solid base without a conventional confining structure provide a unique container combination for the stowed items. Containers equipped with the unique insert also surprisingly provide an aseptic environment especially useful for hygienic applications.

An object is to provide a crosslinkable resin composition having mechanical strength and capable of exhibiting flexibility, repairability, and remoldability in a low-temperature region including room temperature and contributing to prolongation of the life of cured product itself and a decrease in waste. Specifically, used is a crosslinkable resin composition which can form a cured product having a phase-separated structure formed of a continuous phase and a discontinuous phase and in which discontinuous phase has higher tensile elastic modulus than continuous phase, and continuous phase containing a reversible bond. In particular, in crosslinkable resin composition, preferably, the continuous phase contains reaction product of a resin component A containing the reversible bond with a curing agent, the discontinuous phase contains the reaction product of a resin component B with the curing agent, and phase-separated structure contains the reaction product of continuous phase and discontinuous phase with curing agent.

The present invention relates to a process for preparing polyoxyalkylene polyester polyols by reacting a starter compound having Zerewitinoff-active H atoms, a cyclic dicarboxylic acid anhydride and a fatty acid ester with an alkylene oxide in the presence of a basic catalyst. The invention further relates to polyoxyalkylene polyester polyols resulting from the method and to a preparation method for polyurethanes by reaction of the polyoxyalkylene polyester polyols according to the invention.

The present invention relates to a process for preparing hydrophobically associating macromonomers M and to the novel macromonomers prepared by means of the process according to the invention. The macromonomers M comprise a copolymerizable, ethylenically unsaturated group and a polyether structure in block form, the latter consisting of a polyethyleneoxy block and a hydrophobic polyalkyleneoxy block consisting of alkyleneoxy units having at least 4 carbon atoms. Optionally, the macromonomers M may have a terminal polyethyleneoxy block. The macromonomers prepared by the process according to the invention are suitable for reaction with further monomers, especially with acrylamide, to give a water-soluble, hydrophobically associating copolymer.

In nonionic surfactants that contain blocks of hydrophobic poly(alkylene oxide) polymer linked to blocks of hydrophilic poly(alkylene oxide) polymer, the biodegradability of the polymer is improved if the hydrophobic blocks are polymerized in the presence of carbon dioxide to add poly (alkylene carbonate) units into the hydrophobic block, in which the alkylene carbonate units make up from 1 to 40 weight percent of the hydrophobic polymer blocks. The resulting nonionic surfactants can have similar surfactant performance but improved biodegradability, as compared to related surfactants without alkylene carbonate units.

A polyol block copolymer comprising a polycarbonate block, A (-A-ZZ(Z-A).sub.n-), and polyethercarbonate blocks, B. The polyol block copolymer has the polyblock structure:
B-A-ZZ(Z-A-B).sub.n
wherein n=t1 and wherein t=the number of terminal OH group residues on the block A; and wherein each A is independently a polycarbonate chain having at least 70% carbonate linkages, and wherein each B is independently a polyethercarbonate chain having 50-99% ether linkages and at least 1% carbonate linkages; and wherein ZZ(Z).sub.n is a starter residue. A process of producing a polyol block copolymer from a two step process carried out in two reactors, and products and compositions incorporating such copolymers.

A process for producing alkoxylates features a high growth ratio without the need of interim storage of a pre-polymer produced in a first reactor. The process may involve reacting a monomeric educt in the presence of a catalyst and a starting material in a first reactor equipped with a first circulation loop and thereafter passing a pre-polymer that is produced of the first circulation loop to a second reactor equipped with a second circulation loop, where a desired polymer is produced. The first reactor may comprise a smaller volume than the second reactor. The growth ratio, defined as a final batch volume of the second reactor divided by a minimum initial volume of the starting material in the first reactor, is at least 80:1.

A process for producing a polyol block copolymer in a multiple reactor system including a first and second reactor in which a first reaction takes place in the first reactor and a second reaction takes place in the second reactor. The first reaction is the reaction of a carbonate catalyst with CO.sub.2 and epoxide, in the presence of starter and/or solvent to produce polycarbonate polyol copolymer and the second reaction is the reaction of DMC catalyst with the polycarbonate polyol compound of the first reaction and epoxide to produce polyol block copolymer. The product of the first reaction is fed into the second as crude reaction mixture, the epoxide and the polycarbonate polyol compound of the first reaction are fed in a continuous or semi-batch manner, and/or the product of the first reaction has neutral or alkaline pH on addition to the second. The invention further relates to the copolymers and products incorporating such copolymers.

A rigid foam comprising the reaction product of an (poly)isocyanate, and a polyethercarbonate polyol copolymer is described. The polyethercarbonate polyol copolymer is derived from the copolymerisation of one or more epoxides with CO.sub.2, wherein the total CO.sub.2 content of the polyethercarbonate polyol copolymer is between 1 and 40 wt %, the carbonate linkages are <95% of the total linkages from the copolymerisation, and the molecular weight is between 100 to 5000 g/mol. The foam is a polyurethane foam, more typically, a polyisocyanurate or a mixed polyisocyanurate/polyurethane foam. Methods, polyols and compositions for producing the foams are also described.

A polyol block copolymer including a polycarbonate block, A(AZZ(ZA).sub.n), and polyethercarbonate blocks, B. The polyol block copolymer has the polyblock structure:

##STR00001##

wherein n=t1 and wherein t=the number of terminal OH group residues on the block A; and wherein each A is independently a polycarbonate chain having at least 70% carbonate linkages, and wherein each B is independently a polyethercarbonate chain having 50-99% ether linkages and at least 1% carbonate linkages; and wherein ZZ(Z).sub.n is a starter residue. The process of producing a polyol block copolymer from a two step process carried out in two reactors, and products and compositions incorporating such copolymers.