Abstract:
A suspension process for preparing an acetoacetyl functional polymer and the acetoacetyl functional polymer made from the process suitable for aldehyde abatement.
Abstract:
Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant and at least one catalyst, at least one cyclic 1, 3-diketone compound and optionally least one antioxidant. Foams so produced emit low levels of both formaldehyde and acetaldehyde.
Abstract:
Disclosed is a composition comprising at least one interpolymer dispersed within an aqueous medium, the interpolymer comprising at least one unsaturated monomer and at least one selected from the group consisting of at least one conjugated acid, at least one mono-ester of a conjugated acid, and mixtures thereof, and, optionally, at least one surfactant configured to stabilize the interpolymer within the aqueous medium. The conjugated acid may be derived from a naturally-occurring oil, such as tung oil. There is also provided a method for preparing a composition, comprising forming an interpolymer comprising the at least one unsaturated monomer and the at least one selected from the group consisting of at least one conjugated acid, at least one mono-ester of a conjugated acid, and mixtures thereof. There is still further provided a pressure sensitive adhesive comprising the composition prepared according to the disclosed method.
Abstract:
A thermal interface material comprising: (A) a polyolefin having at least two hydroxy groups per molecule; (B) at least one thermally conductive filler; (C) a phase change material with a melting point of 25 to 150 ℃; and (D) a coupling agent, wherein a content of component (B) is at least 80 mass%, a content of component (C) is 0.01 to 1 mass%, and a content of component (D) is 0.1 to 1 mass%, each based on a total mass of the present thermal interface material. The present thermal interface material becomes softer as its temperature increases, while does not exhibit pumping-out in electronic devices during power cycling.
Abstract:
A highly thermally conductive composition is provided, such composition comprising: (A) An organopolysiloxane composition; (B) a filler treating agent; (C) a thermal stabilizer; and (D) thermally conductive filler mixture, comprising: (D-1) a small-particulate thermally conductive filler having a mean size of up to 3 μm, (D-2) spherical aluminum nitride having a mean size of from 50 to 150 μm, (D-3) boron nitride having a mean size of from 20 to 200 μm.
Abstract:
A highly thermally conductive composition is provided, such composition comprising: (A) An organopolysiloxane composition; (B) a filler treating agent; (C) a thermal stabilizer; and (D) thermally conductive filler mixture, comprising: (D-1) a small-particulate thermally conductive filler having a mean size of up to 1 μm, (D-2) middle-sized filler having a mean size of from 1 to 10 μm, (D-3) large filler having a mean size of larger than 30 μm and comprising at least magnesium oxide.
Abstract:
Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant and at least one catalyst, at least one polyacetoacetate compound and least one antioxidant. Foams so produced emit low levels of both formaldehyde and acetaldehyde.
Abstract:
The present invention is a process for preparing a sorbate ester comprising the steps of: a) contacting together in a reaction vessel a first organic solvent, sorbic acid, a catalytic amount of TiCl 4 , an anti-oxidant, and an alkylene oxide under conditions sufficient to form a mixture of the sorbate ester and residual water-soluble impurities; then b) separating the sorbate ester from the residual water-soluble impurities by washing. Sorbate esters can be prepared in an efficient and cost-effective manner by the process of the present invention.
Abstract:
Provided is a new process of preparation for PUA with superior mechanical performance, such as elongation, and tensile strength. The process is solvent free, smooth, and robust. PU prepolymer prepared according to the process has low viscosity, and contains no particulate DMPA.
Abstract:
The present disclosure relates to a composition and method for preparing microencapsulated phase change materials. The composition comprises oil phase a component and a water phase component; (1) the oil phase component comprises, based on the total weight of the oil phase component: -from 40 wt% to 99 wt% of phase change materials; -from 0.5 wt% to 30 wt% of aliphatic isocyanates having at least two NCO-functional groups; and -from 0.5 wt% to 30 wt% of aromatic isocyanates having at least two NCO-functional groups; (2) the water phase component comprises: -water in amount of at least 3 times the total weight of the oil phase component and -water soluble amine compounds having at least two NH-functional groups, wherein the mole ratio of NH-to NCO-is from 0.5: 1 to 3: 1. The method is a robust and efficient process, which does not require any organic solvents or surfactants.