162results about How to "Improve sag resistance" patented technology

The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. The polymers are produced by subjecting propylene and optionally other olefins to polymerization in a plurality of polymerization reactors connected in series, employing different amounts of hydrogen as a molar mass modifier in at least two of the reactors, and carrying out the polymerization reaction in the presence of a catalyst system capable of catalyzing the formation of a high molar mass polymerization product having a MFR2 of less than 0.1 g / 10 min and a low or medium molar mass polymerization product having a MFR2 of more than 0.5 g / 10 min.

The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. The polymers are produced by subjecting propylene and optionally other olefins to polymerization in a plurality of polymerization reactors connected in series, employing different amounts of hydrogen as a molar mass modifier in at least two of the reactors, and carrying out the polymerization reaction in the presence of a catalyst system capable of catalyzing the formation of a high molar mass polymerization product having a MFR2 of less than 0.1 g / 10 min and a low or medium molar mass polymerization product having a MFR2 of more than 0.5 g / 10 min.

The invention is an adhesive composition comprising: a) an isocyanate functional polyether base prepolymers having a z molecular weight average (Mz) of about 10,000 to about 80,000 g / mole; a carbon black having an average oil absorption number of at least about 80 to at most about 400 cubic centimeters of dibutyl phthalate per 100 grams of the carbon black; (c) reactive silicon in an amount from about 0.001% to about 10% by weight of the adhesive composition; and (d) one or more catalysts for the reaction of isocyanate with hydroxyl groups. The adhesive compositions of the invention surprisingly may have improved sag performance (i.e., decreased sag) when heated, while also making them more easily pumped.

The invention discloses quick-dry solvent-free anti-sagging polyurethane water-proof paint. Raw materials of the quick-dry solvent-free anti-sagging polyurethane water-proof paint include polyurethaneprepolymer, a plasticizer, a dispersion agent, filler, a dehydrating agent, a catalyst, a defoaming agent and an oxazolidine reactive diluent, wherein the catalyst is prepared from pentamethyldipropylenetriamine, tetramethylethylenediamine and 1,8-diazabicyclo(5.4.0)undec-7-ene; raw materials of the polyurethane prepolymer include polyether diol, polyether triol, isocyanate and a chain extender,and the polyurethane prepolymer is prepared from a method which comprises the following steps that 1, the raw materials of the polyurethane prepolymer are weighed, and the polyether diol and the isocyanate are subjected to reaction until the reaction is completed; 2, then the polyether triol is added for reaction until the reaction is completed; 3, then the chain extender is added for reaction toprepare the polyurethane prepolymer. A preparation method of the water-proof paint comprises the following steps that 1, the polyurethane prepolymer. Is prepared; 2, the prepared polyurethane prepolymer and the residual raw materials of the water-proof paint are mixed to obtain the water-proof paint. The quick-dry solvent-free anti-sagging polyurethane water-proof paint has the advantages of excellent film-forming speed, anti-sagging performance, low viscosity and the like at the same time.

A composite board comprising a core and a paper facer sheet adhesively laminated to one face of the core, the core including a mixture of perlite, binder, and cellulose fiber, the core being formed as a water slurry with said perlite, binder and cellulose fiber being uniformly distributed therein, the perlite being in an expanded state such that its particles include internal voids and exhibit a density of about 5 to about 15 pounds per cubic foot and being present in sufficient quantity to occupy in bulk at least 50% of the volume of the core, on a weight basis, the perlite and cellulose fiber combined forming at least 25% of the weight of the core. The paper facer being laminated to the core with a water-based adhesive applied across substantially the full area of the facer, both the compressive strength of the perlite and tensile strength of the cellulose fiber being utilized by operation of the binder such that a relatively high nail-pull capacity in comparison to the weight of the composite board is achieved and sag resistance is imparted to the composite board when it is used for ceiling tile.

The present invention provides a system for monitoring and controlling an industrial paint operation, where a five-sided intermodal shipping container is painted with a water-based coating composition. The system includes a paint application system, a drying system with a chamber configured to handle one or more intermodal shipping containers, and modules for monitoring and controlling the application of paint and the drying of the applied paint.