C08G18/2081

Polyurethane Reactive Hot Melt With Long Pot-Life Under Heat
20230159804 · 2023-05-25 ·

Disclosed is a moisture reactive hot melt adhesive composition prepared from a combination comprising a polyisocyanate; a polyol; a MA-SCA acid; one or both of an inorganic filler or an organosilane; optionally a thermoplastic polymer; and optionally one or more additives. Useful polyols include poly(hexanediol adipate), a polyester diol having a structure of Formula 1 or of Formula 2 and combinations thereof. Formula 1 is:


H—[O(CH.sub.2).sub.mOOC(CH.sub.2).sub.nCO].sub.k—O(CH.sub.2).sub.m—OH;

m and n are each an even integer; m+n =8; m and n are each independently selected from 2, 4 or 6; k is an integer from 9 to 55; and the polyol of Formula 1 has a number average molecular weight of about 2,000 to about 11,000. Formula 2, a polycaprolactone polyol, is:


HO—[(CH.sub.2).sub.5COO].sub.p—R.sub.1—[OOC(CH.sub.2).sub.5].sub.1—OH;

R.sub.1 is an initiator such as 1,4′-butanediol, 1,6′-hexanediol, or ethylene glycol; p is an integer from 0 to 96; q is an integer from 0 to 96; p+q=16 to 96; and the polyol has a number average molecular weight of about 2,000 to about 11,000 or less.

Polyurethane foam

Provided is a polyurethane foam having excellent heat resistance and the like. The polyurethane foam is obtained from a material that contains a polyol and a polyisocyanate, in which the polyol contains a polyester polyol, the polyisocyanate contains a diphenylmethane diisocyanate-based isocyanate, it is preferable that the polyester polyol has one or more side chains composed of an alkyl group, and the polyurethane foam may be used as a soundproof material for vehicles.

Process for seaming of artificial turf using low-pressure adhesives

The invention pertains generally to a low-pressure (100-250 psi) process of seaming adjacent seams of artificial turf using a one-component or a two-component polyurethane adhesive using an apparatus which employs a payoff spool of base material in the front of the apparatus and an activation trigger adjacent the handle to begin the application of polyurethane spray foam adhesive by connectivity between the application trigger and the foam spray gun trigger.

Polyurethane Hot Melt Adhesive Composition, and Preparation Method Thereof
20220315817 · 2022-10-06 ·

The present invention provides a hotmelt adhesive composition, comprising (A) at least one polyurethane prepolymer obtained by reacting (A1) polyols comprising: (a) at least one polyester polyol, and (b) at least one polyether polyol, with (A2) at least one polyisocyanate having at least two isocyanate groups in one molecule; (B) at least one thermoplastic resin; and (C) at least one aspect ratio promoter in an amount of no more than 10% by weight based on the total weight of the composition.

Polymer expanding material used in infiltration or seepage watery environment and preparation method thereof

The present invention relates to a polymer expanding material in infiltration or seepage multi-water environment and a preparation method thereof, belonging to a technical field of polymer expanding foam materials. The polymer expanding material includes the following parts of materials by weight: 20-30 parts of rosin polyester polyol, 20-50 parts of isocyanate, 20-40 parts of PhireGuard® MB-512, 5-10 parts of HFO-1233zd, 1-2 parts of surfactant, 0.01-1 part of catalyst, and 0.01 parts of benzoyl chloride. The present invention has high sand fixing body strength, fast curing speed, good elastoplasticity, good pouring property and permeability, and good expanding property, which is suitable for infiltration or seepage multi-water environment, especially for dam infiltration, piping, and other problems during construction and subsequent operation of water conservancy projects.

SUSTAINABLE REACTIVE HOT MELT ADHESIVE COMPOSITIONS
20230151248 · 2023-05-18 ·

The invention features a reactive hot melt adhesive composition comprising the reaction product of from 5% by weight to 40% by weight of a first polyester polyol comprising the reaction product of a dicarboxylic acid monomer, a tetra alkyl cyclobutane diol and optionally one or more additional monomers, from 10% by weight to 80% by weight of a sustainable polyol, and a diisocyanate.

Acid-Blocked Alkylaminopyridine Catalysts For Polyurethane Foam
20230144476 · 2023-05-11 ·

The present disclosure relates to acid-blocked alkylaminopyridine catalysts for use in a polyurethane formulation. The polyurethane formulation may include the acid-blocked alkylaminopyridine catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound and a halogenated olefin compound.

Direct alkoxylation of bio-oil

An alkoxylated bio-oil composition is provided. The alkoxylated bio-oil composition may include an alkoxylated bio-oil prepared from an alkoxylation of dewatered bio-oil. A method for preparing an alkoxylated bio-oil composition is provided. A copolymer composition is provided. The copolymer composition may include an alkoxylated bio-oil copolymer unit. A method for preparing a copolymer composition is provided.

Open Cell Polyurethane Flame-Retardant Foams

The invention pertains generally to a process and a composition-of-matter for a shelf-stable open cell polyurethane HFO-blown two-component polyurethane foam composition having improved flame-retardant properties through the use of at least one organo-tin containing catalyst and at least one potassium containing catalyst; and at least one dimorpholino-based ether catalyst, a ratio of the at least one potassium-containing catalyst to the tin-containing catalyst being at least approximately 1.5:1.0, the at least one surfactant comprising a polydimethylsiloxane (PDMS) backbone and polyethylene oxide-co-propylene oxide (PEO-PPO) random copolymer grafts; and the added water comprises at least 8 weight percent of said B-side reactants, the polyurethane foam having a Class B rating with a flame spread between 25 and 75 inclusive and a smoke developed of under 450 using ASTM E 84 testing protocol.

COATING MATERIAL COMPOSITIONS AND COATINGS PRODUCED THEREFROM AND ALSO USE THEREOF

The present invention relates to nonaqueous coating material compositions comprising (A) at least one polyhydroxyl group-containing component (A), (B1) at least one isocyanate and silane group-containing component (B1), and (D) at least one catalyst (D) for the crosslinking of silane groups,
which composition comprises (B2) at least one isocyanate group-containing component (B2) which is different from component (B1) and which additionally has at least one perfluoroalkyl group of the formula (I)


CR.sup.1.sub.3—(CR.sup.2.sub.2).sub.f—  (I) where R.sup.1 and R.sup.2 independently of one another are H, F and/or CF.sub.3, but R.sup.1 and R.sup.2 may not both be H, and f is 1 to 20, preferably 3 to 11, more preferably 5 to 7.

A further subject of the present invention are the coatings produced from these coating material compositions, and also their use.