Patent classifications
C08L75/08
Blocking agent for amines, latent hardeners and polyurethane compositions
The use of an aldehyde mixture containing 70 to 95 wt % of aldehydes of formula (I) and 5 to 30 wt % of alkylbenzene compounds not corresponding to formula (I) as a blocking agent for amines results in odorless, especially economically blocked amines, which at room temperature are typically liquid and have a surprisingly low viscosity. Such blocked amines are particularly suitable as latent hardeners in isocyanate-group-containing compositions. Single-component moisture-curing polyurethane compositions formulated therewith are surprisingly stable in storage, can be used for low-emission applications without odor problems and do not trigger any problems with plasticizer migration. Surprisingly, said compositions even have advantages over corresponding compositions having latent hardeners based on purified aldehydes of formula (I), in particular with respect to viscosity, storage stability and especially strength.
Methods, Articles and Adhesive Composition Comprising Unpolymerized Cyclic Olefin, Catalyst, and Adhesion Promoter Polymer
An adhesive composition is described comprising unpolymerized cyclic olefin, a ring opening metathesis polymerization (ROMP) catalyst or precatalyst thereof, and one or more adhesion promoter polymers. In one embodiment, the adhesion promoter is a polyolefin comprising maleic anhydride or silicon-containing moieties. In one embodiment, a combination of at least one polymeric polyisocyanate and at least one polyolefin comprising maleic anhydride or silicon-containing moieties provides a synergistic improvement. In another embodiment, a polymeric polyisocyanate adhesion promoter comprising oxygen atoms in the backbone has been found useful for bonding substrates such as polyamide, polyether ether ketone, or polyether imide. Also described are methods of bonding a substrate and articles, such as an electric battery cold plate assembly.
Methods, Articles and Adhesive Composition Comprising Unpolymerized Cyclic Olefin, Catalyst, and Adhesion Promoter Polymer
An adhesive composition is described comprising unpolymerized cyclic olefin, a ring opening metathesis polymerization (ROMP) catalyst or precatalyst thereof, and one or more adhesion promoter polymers. In one embodiment, the adhesion promoter is a polyolefin comprising maleic anhydride or silicon-containing moieties. In one embodiment, a combination of at least one polymeric polyisocyanate and at least one polyolefin comprising maleic anhydride or silicon-containing moieties provides a synergistic improvement. In another embodiment, a polymeric polyisocyanate adhesion promoter comprising oxygen atoms in the backbone has been found useful for bonding substrates such as polyamide, polyether ether ketone, or polyether imide. Also described are methods of bonding a substrate and articles, such as an electric battery cold plate assembly.
ISOCYANATE-REACTIVE COMPOSITION
An isocyanate-reactive composition including: (i) at least one isocyanate-reactive compound; and (ii) a predetermined amount of at least one thixotropic modifier; and a foam-forming composition for producing a polyurethane or polyisocyanurate foam including: (A) at least one isocyanate component; and (B) at least one isocyanate-reactive component; wherein the at least one iso-cyanate-reactive component is the above isocyanate-reactive composition.
ISOCYANATE-REACTIVE COMPOSITION
An isocyanate-reactive composition including: (i) at least one isocyanate-reactive compound; and (ii) a predetermined amount of at least one thixotropic modifier; and a foam-forming composition for producing a polyurethane or polyisocyanurate foam including: (A) at least one isocyanate component; and (B) at least one isocyanate-reactive component; wherein the at least one iso-cyanate-reactive component is the above isocyanate-reactive composition.
POLYURETHANE FOAMS FOR COMFORT APPLICATIONS
Polyurethane foams that are hydrophilic but nonetheless have low compression sets are made from a combination of MDI and TDI prepolymers, water, and a polymer polyol. The foams optionally are made incorporating a phase change material in the foam formulation. The phase change material does not require encapsulation.
POLYURETHANE FOAMS FOR COMFORT APPLICATIONS
Polyurethane foams that are hydrophilic but nonetheless have low compression sets are made from a combination of MDI and TDI prepolymers, water, and a polymer polyol. The foams optionally are made incorporating a phase change material in the foam formulation. The phase change material does not require encapsulation.
POLYURETHANE FOAMS FOR COMFORT APPLICATIONS
Polyurethane foams that are hydrophilic but nonetheless have low compression sets are made from a combination of MDI and TDI prepolymers, water, and a polymer polyol. The foams optionally are made incorporating a phase change material in the foam formulation. The phase change material does not require encapsulation.
COMBINATION OF A THERMOPLASTIC ELASTOMER AND A FLUOROPOLYMER
The present invention relates to a combination of polymers comprising: at least one thermoplastic elastomer comprising at least 10% by mass of ester flexible blocks relative to the total mass of the thermoplastic elastomer, and at least one fluoropolymer comprising a vinylidene fluoride homopolymer or copolymer.
COMBINATION OF A THERMOPLASTIC ELASTOMER AND A FLUOROPOLYMER
The present invention relates to a combination of polymers comprising: at least one thermoplastic elastomer comprising at least 10% by mass of ester flexible blocks relative to the total mass of the thermoplastic elastomer, and at least one fluoropolymer comprising a vinylidene fluoride homopolymer or copolymer.