Disclosed herein are biodegradable coating and paint compositions comprising 1,3-propanediol, wherein the 1,3-propanediol in said biodegradable composition has a bio-based carbon content of about 1% to 100%. In addition, it is preferred that the 1,3-propanediol be biologically-derived, and wherein upon biodegradation, the biologically-derived 1,3-propanediol contributes no anthropogenic CO2 emissions to the atmosphere.

Disclosed herein are biodegradable coating and paint compositions comprising 1,3-propanediol, wherein the 1,3-propanediol in said biodegradable composition has a bio-based carbon content of about 1% to 100%. In addition, it is preferred that the 1,3-propanediol be biologically-derived, and wherein upon biodegradation, the biologically-derived 1,3-propanediol contributes no anthropogenic CO2 emissions to the atmosphere.

Disclosed is a coating composition suitable for coating onto a wall or other substrate to yield a dry-erase coating. The composition may be prepared by providing an aminoalkoxysilane, and in the substantial absence of water, reacting a portion of the aminoalkoxysilane with a carbonate and reacting a portion of the aminoalkoxysilane with an epoxy compound. These reactions will result in a coating composition that comprises a mixture of alkoxysilylamines and alkoxysilylcarbamates. The coating composition can also include an alkyl amine in an amount effective to catalytically deprotect alkoxy groups to yield silanol groups, facilitating fast crosslinking.

The present application describes a composition and method thereof to make low cost environment friendly and highly safe conducive ink by using micro-sized silver particles, water, edible level thickener, water-based solvent, water-based resin and surfactant. The conductive ink may be written by various kinds of writing devices like gel pen, ball pen etc. on various substrates like paper, plastic, metal, etc. form a conductive trace. As additional features of the present application, the composition comprises erasable conductive ink, which is fast curing and conductive immediately upon application, having multiple applications for educational purpose to help students have a better understanding of how electronic work and even design their own electronics conveniently.

A product of additive manufacturing with a silicone-based ink includes a plurality of continuous filaments comprised of a siloxane matrix, wherein the continuous filaments are arranged in a geometric pattern, a plurality of inter-filament pores defined by the geometric pattern of the continuous filaments, and a plurality of intra-filament pores having an average diameter in a range of greater than 1 micron to less than 50 microns.

A product of additive manufacturing with a silicone-based ink includes a plurality of continuous filaments comprised of a siloxane matrix, wherein the continuous filaments are arranged in a geometric pattern, a plurality of inter-filament pores defined by the geometric pattern of the continuous filaments, and a plurality of intra-filament pores having an average diameter in a range of greater than 1 micron to less than 50 microns.

The present invention concerns a kit comprising a) an aqueous writing ink composition, containingmetal nanoparticles as coloring agent wherein said metal nanoparticles essentially consists of metal and said metal is chosen from silver, gold, aluminum and/or copper anda dispersing agent, and b) an eradicator fluid containing at least one oxidizing agent. It also concerns an aqueous eradicator fluid for erasing an aqueous writing ink composition containing metal nanoparticles as the coloring agent, in which said metal nanoparticles said fluid containingan oxidizing agent anda volatile solvent. It further concerns a writing instrument containing the eradicator fluid, the use of the eradicator fluid and/or of the kit containing it and a method of correcting errors of a written mark made on porous substrate.

A writing instrument may be capable of preventing dye deposition to a pen core and highly achieving both inhibition of ink discoloration due to the dye deposition and improved writing feeling without reducing writing performance. Such a writing instrument may be equipped with a pen core and loaded with a water-based ink composition, wherein the water-based ink composition contains colored resin particles formed by polymerization of a monomer comprising at least cyclohexyl (meth)acrylate, enclosing a basic dye, an oil-soluble dye or an acid dye, and further contains an anionic surfactant.

Embodiments of the present disclosure provides an ink composition for a writing instrument comprising a colorant and water, wherein the ink composition further comprises a thickener including polyethylene glycol or polypropylene glycol having a molecular weight between 200 and 1000 and an acrylic resin having an amine.

An oil-based ink composition for a writing instrument, comprising a dye, an organic solvent and a phenolic compound of the following general formula (1):

##STR00001##

wherein R is each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, R.sub.1 is any of an alkyl group having 1 to 5 carbon atoms, a halogenated alkyl group having 1 to 5 carbon atoms, a phenyl group, a hydroxyphenyl group, and an alkyl group having 1 to 5 carbon atoms substituted by a hydroxyphenyl group, and R.sub.2 is any of a halogenated alkyl group having 1 to 5 carbon atoms, a phenyl group, a hydroxyphenyl group, and an alkyl group having 1 to 5 carbon atoms substituted by a hydroxyphenyl group. The oil-based ink composition for a writing instrument can form handwriting having excellent water resistance in which no bleeding occurs on written surfaces of various materials with a dye retaining color development.