Disclosed are polyurethane adhesive compositions which include (a) one or more urethane prepolymers having isocyanate moieties; (b) a catalytic amount of one or more catalysts; (c) one or more fillers; (d) one or more silane adhesion promoters; and (e) one or more monofunctional polyalkylene glycols.

Disclosed are polyurethane adhesive compositions which include (a) one or more urethane prepolymers having isocyanate moieties; (b) a catalytic amount of one or more catalysts; (c) one or more fillers; (d) one or more silane adhesion promoters; and (e) one or more monofunctional polyalkylene glycols.

The invention relates to a process for producing a ring-opening polymerization product by reacting at least one polyisocyanate and 2-oxo-1,3-dioxolane-4-carboxylic acid and subjecting the reaction product to a temperature within the range of from about 40 to about 150 C. in the presence of a catalytic amount of at least one non-nucleophilic base. The obtained polymerization product may be present as a foam and is suitable as binder, insulation material, sealant or coating and in the production of mattresses or wound pads.

A two-part curable composition comprises a Part A and a Part B. Part A composition includes uretdione-containing compound having an average uretdione ring functionality of at least 1.2. Part B composition includes polythiol having an average sulfhydryl group functionality of at least 2. At least one of the Part A composition and the Part B composition may further comprise accelerator for addition of the polythiol to the uretdione-containing compound. The accelerator comprises a nonacidic amine curative. The amine curative does not comprise a substituted or unsubstituted amidine group. Cured compositions, methods of making them and articles including them are also disclosed. A two-part composition without accelerator is disclosed wherein the uretdione-containing compound has at least one pendant CH.sub.2NR.sup.4.sub.2 groups, wherein each R.sup.4 independently represents an alkyl group having from 1 to 8 carbon atoms, or two R.sup.4 groups taken together form an alkylene group having from 2 to 8 carbon atoms.

A polyurethane catalyst comprises a sodium compound, the sodium compound being 1 to 60 wt % of the polyurethane catalyst by the mass percent, and further comprises a tertiary amine and/or pyridine compound. The sodium compound and the tertiary amine and/or pyridine compound achieve a synergistic effect; during the catalysis of the polymerization of isocyanate and polyalcohol, the speed of the polymerization reaction is increased; and the prepared polyurethane material has excellent physical properties, does not contain any heavy metal element at all, is an environment-friendly catalyst, solves the technical problem of ensuring environmental protection, safety and the catalytic efficiency of the polyurethane catalyst, and is particularly applicable to the preparation of polyurethane synthetic leather resin slurry, a polyurethane elastomer (prepolymer), a polyurethane coating, a polyurethane adhesive, a polyurethane composite material, flexible polyurethane foam, and a rigid polyurethane material.

Compositions suitable for production of polyurethane foams, comprising at least one OH-functional compound (OHC) obtainable by the partial or complete hydrogenation of ketone-aldehyde resins, wherein the OH-functional compound contains at least one structural element of the formula (1a) and optionally of the formulae (1b) and/or (1c), ##STR00001##
with R=aromatic with 6-14 carbon atoms, (cyclo)aliphatic with 1-12 carbon atoms, R.sup.1=H, CH.sub.2OH, R.sup.2=H, or a radical of the formula (CH.sub.2CH(R)O).sub.yH where R is hydrogen, methyl, ethyl or phenyl and y=1 to 50, k=2 to 15, preferably 3 to 12, more preferably 4 to 11, m=0 to 13, preferably 0 to 9, l=0 to 2,
where the sum of k+l+m is from 5 to 15, preferably from 5 to 12, and k>m, are described.

Disclosed are polyurethane-foam forming compositions, rigid polyurethane foams and methods for their production, as well as to composite articles comprising such foams sandwiched between facer substrates, including use of such composite elements for floor insulating elements for refrigerated tractor trailers. The rigid polyurethane foams are produced from an isocyanate-reactive composition comprising: (1) a polyol blend; (2) a hydrochlorofluoroolefin; and (3) a tertiary amine catalyst composition.

The present invention relates to a flame-retardant composition, a method for preparing the same and an article therefrom.

Disclosed are polyurethane-foam forming compositions, rigid polyurethane foams and methods for their production, as well as to composite articles comprising such foams sandwiched between facer substrates, including use of such composite elements for floor insulating elements for refrigerated tractor trailers. The rigid polyurethane foams are produced from an isocyanate-reactive composition comprising: (1) a polyol blend; (2) a hydrochlorofluoroolefin; and (3) a tertiary amine catalyst composition.

To provide an adhesive composition capable of firmly bonding polymer sheets together, comprising: (I) 100 parts by mass of an end-unreactive urethane urea resin; and (III) 4.0 to 20 parts by mass of a polyisocyanate compound having at least two isocyanate groups in the molecule, wherein the polyisocyanate compound (III) contains (IIIA) a polyisocyanate compound having an isocyanate group bonded to secondary carbon and (IIIB) a polyisocyanate compound having 4 to 30 carbon atoms in the molecule other than the component (IIIA), and the amount of the component (IIIB) is 10 to 500 parts by mass based on 100 parts by mass of the component (IIIA).