A process for end-capping a dimethylsilanol terminated polydiorganosiloxane with one or more di, tri and/or tetra alkoxysilanes in the presence of a basic end-capping catalyst starting material is provided. An acidic stabilizing/neutralising agent is subsequently added. The acidic stabilizing/neutralising agent is selected from one or more fatty acids having from 8 to 26 carbons; an alkane sulphonic acid having from 1 to 10 carbons; acidic fumed silica and/or one or more acidic liquid polybutadienes or a mixture thereof. The resulting capped polymeric material may be utilized as a polymer in, e.g., an organopolysiloxane elastomer composition.

The present invention relates to a composition comprising a first component containing at least one polyol, and a second component containing at least one polyisocyanate, the composition further comprising at least one aldimine of formula (I). The composition exhibits a long open time and fast curing without odor immissions, wherein a bubble-free, elastic material having a non-tacky surface and good strength, extensibility, elasticity and resistance is produced, which does not tend to problems arising with plasticizer migration.

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.

An epoxy resin has excellent adhesiveness to different materials. An epoxy resin composition includes the following (A) to (E): (A) a compound with an epoxy equivalent of less than 210 g/eq. that is liquid at 25° C. and has two or more epoxy groups in one molecule, (B) (B-1) a compound with an epoxy equivalent of 210 g/eq. or more that is liquid at 25° C. and has two or more epoxy groups in one molecule and/or (B-2) a compound that is solid at 25° C. and has two or more epoxy groups in one molecule, (C) a thiol curing agent, (D) a latent curing agent, and (E) a reactive diluent.

A nitrogen compound having a melting point of at least 65° C. is used as a curing agent for heat curing in a heat-curable single-component polyurethane composition, which includes a prepolymer with isocyanate end groups made of at least one polyisocyanate and at least one polyol, wherein the solid nitrogen compound is selected from a polyamine, a hydrazide or mixtures thereof.

Oligomeric substances which contain one or more (meth)acryloyl functional groups as well as two or more amide functional groups are useful as components of compositions which may be cured using actinic irradiation to provide polymeric articles.

Provided is a UV curable sealing material containing a vinyl chloride sol as a main ingredient, the film strength of the sealing material being not reduced even in a thin film, the sealing material thus having high resistant pressure against a hem blister. Provided is a vinyl chloride sol composition containing a vinyl chloride-based resin, a UV curable resin having a polar group (functional group), a blocked isocyanate resin, and a filler, the vinyl chloride sol composition being characterized by containing the UV curable resin having a polar group (functional group) in an amount of 20 to 100 parts by weight, the blocked isocyanate resin in an amount of 10 to 50 parts by weight, and the filler in an amount of 50 to 160 parts by weight, relative to 100 parts by weight of the vinyl chloride-based resin.

This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure. The disclosure provides aromatic polyester polyether polyols and compositions comprising such polyols. The disclosed aromatic polyester polyether polyols and compositions including same are the products of the transesterification reaction of polyethylene terephthalate (“PET”) and an ethoxylated triol, namely glycerin or trimethylolpropane, wherein the degree of ethoxylation is from 1 to 9 moles. At least some of the PET used to generate the aromatic polyester polyether polyols is derived from recycled PET. The disclosed aromatic polyester polyether polyols have utility in preparing polyurethane materials, for example.

The invention relates to curable polyorganosiloxanes with special silicon-containing terminal groups and curable compositions based on these polyorganosiloxanes, a capped adhesion promoter, and a curing catalyst. These compositions have improved adhesion properties and excellent storage stability. The invention also relates to the use thereof.

A two-component solventless polyurethane adhesive composition including (A) at least one isocyanate component and (B) at least one polyol component. The isocyanate component (A) comprises an isocyanate prepolymer that is the reaction product of (Ai) a polyisocyanate and (Aii) an isocyanate-reactive component; wherein the isocyanate-reactive component comprises (Aiia) at least one polyol having a functionality greater than two, (Aiib) at least one aromatic polyester polyol having a functionality of greater than two, and (Aiic) at least one hydrophobic polyol. The polyol component (B) comprises (Bi) at least one polyether polyol having a functionality greater than two, (Bii) at least one aromatic polyester polyol transesterified with a natural oil, and (Biii) at least one phosphate ester polyol. A method for forming a laminate is also disclosed, the method comprising the steps of: (I) mixing the above reactants (components (A) and (B)) to form a solventless adhesive composition, (II) applying a layer of the solventless adhesive composition to a surface of a first substrate, (III) bringing the layer of the solventless adhesive composition on the first substrate into contact with a surface of a second substrate to form a laminate, and (IV) curing the solventless adhesive composition. A laminate comprising the above solventless adhesive composition is also disclosed.