The invention relates to the field of powder coatings, and specifically discloses a heat-curable powder coating composition and a preparation method thereof. The powder coating composition comprises: i) component A comprising at least one amorphous solid polyester resin compound having a Michael donor reactive group; ii) component B comprising at least one amorphous ethylenically unsaturated solid polyester resin with a Michael acceptor reactive group; iii) component C comprising at least one (semi) crystalline solid reactive diluent; iv) component D comprising at least one epoxy group-containing solid substance; v) component E comprising at least one basic catalyst. The present invention also discloses a preparation method of the above heat-curable powder coating composition. By adopting the invention, ultra-low temperature curing can be realized. The curing temperature is as low as 90-110° C., and the curing time is short.

The invention relates to the field of powder coatings, and specifically discloses a heat-curable powder coating composition and a preparation method thereof. The powder coating composition comprises: i) component A comprising at least one amorphous solid polyester resin compound having a Michael donor reactive group; ii) component B comprising at least one amorphous ethylenically unsaturated solid polyester resin with a Michael acceptor reactive group; iii) component C comprising at least one (semi) crystalline solid reactive diluent; iv) component D comprising at least one epoxy group-containing solid substance; v) component E comprising at least one basic catalyst. The present invention also discloses a preparation method of the above heat-curable powder coating composition. By adopting the invention, ultra-low temperature curing can be realized. The curing temperature is as low as 90-110° C., and the curing time is short.

A curable resin composition comprising: (a) 27 to 60 wt % of a liquid siloxane oligomer comprising polymerized units of formula R.sup.1.sub.mR.sup.2.sub.nSi(OR.sup.3).sub.4-m-n, wherein R.sup.1 is a C.sub.5-C.sub.20 aliphatic group comprising an oxirane ring fused to an alicyclic ring, R.sup.2 is a C.sub.1-C.sub.20 alkyl, C.sub.6-C.sub.30 aryl group, or a C.sub.5-C.sub.20 aliphatic group having one or more heteroatoms, R.sup.3 is a C.sub.1-C.sub.4 alkyl group or a C.sub.1-C.sub.4 acyl group, m is 0.1 to 2.0 and n is 0 to 2.0; (b) 35 to 66 wt % non-porous nanoparticles of silica, a metal oxide, or a mixture thereof, having an average particle diameter from 5 to 50 nm; and (c) 0.5 to 7 wt % of a cationic photoinitiator.

The present disclosure provides fabrics comprising graphene and/or its derivative(s), wherein said graphene comprising fabrics are characterized by at least three features selected from anti-microbial, antistatic, wicking, thermal cooling, anti-odour and ultraviolet protection. Said graphene comprising fabrics of the present disclosure show several further beneficial properties including but not limited to good/excellent washing fastness, rubbing fastness, perspiration fastness, sublimation fastness and light fastness.

The present disclosure provides fabrics comprising graphene and/or its derivative(s), wherein said graphene comprising fabrics are characterized by at least three features selected from anti-microbial, antistatic, wicking, thermal cooling, anti-odour and ultraviolet protection. Said graphene comprising fabrics of the present disclosure show several further beneficial properties including but not limited to good/excellent washing fastness, rubbing fastness, perspiration fastness, sublimation fastness and light fastness.

The present invention relates to a method for preparing a multiplicity of containers of paints or pre-paints from separate vessels containing an aqueous solution of a rheology modifier, optionally an aqueous dispersion of an opacifying pigment, an aqueous dispersion of polymer particles, and an aqueous dispersion of organic polymeric microspheres. The process of the present invention provides a simple and cost-effective way of preparing a wide variety of a large quantity of contained and finished paints at point-of-sale.

The present invention relates to a method for preparing a multiplicity of containers of paints or pre-paints from separate vessels containing an aqueous solution of a rheology modifier, optionally an aqueous dispersion of an opacifying pigment, an aqueous dispersion of polymer particles, and an aqueous dispersion of organic polymeric microspheres. The process of the present invention provides a simple and cost-effective way of preparing a wide variety of a large quantity of contained and finished paints at point-of-sale.

Disclosed is a method of rearrangement of the molecular structure of isomers of TEXANOL, characterized in that two isomers in TEXANOL is subjected to rearrangement of the molecular structure at a certain temperature and pressure, and 2,2,4-trimethyl-1,3-pentanediol-3-isobutyrate and 2,2,4-trimethyl-1,3-pentanediol-1-isobutyrate in TEXANOL following the rearrangement are in a mass ratio of 31.81-38.65:60.80-67.65. The process of the present invention is simple, no catalyst and other aids are required, and the content of the primary ester in TEXANOL can be significantly increased, so as to improve the volatilization rate of TEXANOL in a paint film, thereby reducing the drying time of the paint film and increasing the number of scrubbing of the paint film, such that the construction conditions of aqueous acrylic paints for exterior walls become relaxed, and the occurrence of floating, whitening, efflorescence, and cracking of the paint film due to water absorption by the non-dried or partly dried paint film during moist or rainy periods is avoided.

The present invention is directed to a coating composition or paint comprising a multistage latex with at least first and second stages, wherein the composition or paint is substantially free of volatile organic compounds (VOC) and capable of film formation even in the absence of coalescent agents. The base paint formulation is capable of being tinted at a point-of-sale (i.e. in-store) using a colorant composition of a type and quantity required to produce a paint of desired color and finish. The paints, show improved block resistance, scrub resistance and tack resistance. Rheological techniques as described herein may be used to determine tack resistance, print resistance, and other performance characteristics.

A process for manufacturing the composition coating may include selecting a wood or masonry material substrate and utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate. The process may utilize an all solution process or controlled environment for manufacturing a composition coating that prevent wetting and/or staining of a substrate. The composition coatings for treating wood or masonry materials improves weather-resistance, microbial resistance, stain-resistance and fungal-resistance of the materials. The reduced permeability of the resulting masonry materials can also delay or inhibit degradation caused by permeation of ions such as chlorides and sulfates. In addition, a stain comprising the composite solution and pigments may impart additional property to wood or masonry materials whilst retaining or improving the original appearance, particularly for the visibility and contrast of the wood grain as seen after the application of the coating.