An artificial stone with non-natural mineral as main material, its raw materials calculated by mass percent include: resin 8-16%, quartz sand aggregate 0-45%, glass particle aggregate 14-60%, quartz powder 0-32%, glass powder 0-32%, tile powder 5-32%, ultrafine quartz powder 0-5% and pigment 0-2%; its main materials also include curing agent and coupling agent; in the formula of artificial stone, the total mass of glass particle aggregate and glass powder is greater than the total mass of quartz sand aggregate, quartz powder and ultrafine quartz powder. Glass particle aggregate and glass powder are made of recycled waste glass, and tile powder is made of recycled waste vitreous polished tiles. The artificial stone in this invention takes non-natural minerals as main fillers, a new formula system is formed, which adopts wastes as main padding, provides more recycling applications of wastes and has more environmental protection meanings.

This invention discloses an artificial stone with glass as main material, which is characterized by that, its raw materials calculated by mass percent include: resin 8-16%, quartz sand aggregate 0-45%, glass particle aggregate 14-60%, quartz powder 0-32%, glass powder 0-32%, ultrafine quartz powder 0-5% and pigment 0-2%; its main materials also include curing agent and coupling agent, the mass ratio of the curing agent and the resin used is 0.5-2:100, and the mass ratio of the coupling agent and the resin used is 0.5-2:100; in the formula of artificial stone, the total mass of glass particle aggregate and glass powder is greater than the total mass of quartz sand aggregate, quartz powder and ultrafine quartz powder. The artificial stone in this invention takes glass particle and powder materials as main fillers, a new formula system is formed, and a new artificial stone is obtained, with a better permeability.

The present invention involves a multiplayer artificial stone and its preparation method. The decorative layer comprises the following components in percentage by weight: 80%-90% of a decorative stone, 5%-15% of an unsaturated polyester resin, 0.6%-2% of a coupling agent, 0.7%-1.2% of a curing agent, and 1%-5% of a pigment filler. The bottom layer comprises the following components in percentage by weight: 65%-78% of a calcium carbonate stone, 10%-18% of an unsaturated polyester resin, 0.6%-2% of a coupling agent, 0.7%-1.2% of a curing agent, and 1-15% of a pigment filler. The preparation method involves preparing the decorative layer and the bottom layer separately and then binding the two layers together by pressing. This arrangement allows the multilayer artificial stone to have good decorative effect and product quality; in addition, each layer contains only one type of stone, therefore its preparation is easier and can be more precisely controlled, lowering production cost.

To provide a method for producing a calcium carbonate block for medical use which is useful as a bone substitute or a bone substitute raw material needed in medical care, which is a method for producing a calcium carbonate block that satisfies the following desired properties: 1) the calcium carbonate block has excellent mechanical strength; 2) the calcium carbonate block can be produced by a simplified production method; 3) the calcium carbonate block contains no impurity; and 4) the calcium carbonate block has high reactivity.

A method for producing a calcium carbonate block, comprising a step of shaping a water-containing calcium hydroxide block and a carbonation step of immersing the calcium hydroxide block in a carbonate ion-containing aqueous solution.

A curing agent comprising methyl isobutyl ketone peroxide and at least one peroxide.

The invention relates to an unsaturated polyester resin comprising fumaric acid and optional end-capping with an ethylenically unsaturated moiety, which is useful for the preparation of engineered stone. The unsaturated polyester resin can be further processed to obtain a formable composition which can be cured to finally yield engineered stone as composite material. The thus obtained engineered stone shows a high resistance to UV- and sunlight as well as to weathering. The invention also relates to a method for the preparation of engineered stone as well as to the use of the unsaturated polyester resin for the preparation of engineered stone.

In one embodiment, a method of forming an extruded board includes mixing a resin and a foaming agent, melting the mixed resin and foaming agent to form a uniformly colored extrudate, differentially expanding voids formed from the foaming agent within the uniformly colored extrudate by passing the uniformly colored extrudate through a breaker plate, forming a board with the differentially expanded voids and uniformly colored extrudate, and forming lightened portions on an outermost surface of the formed board.

This invention relates to polymeric compositions for application onto natural stone in order to provide for long-term chemical, stain, and water resistance, along with antimicrobial properties. Many natural, unsealed stones do not have stain, etch, or water resistance. The described compositions were developed using a technology of chemical grafting that involves the use of prepolymers, monomers, catalysts, graft initiators, wetting agents, antimicrobial agents, and other ingredients. The composition, when thus applied to the stone surface allows it to obtain a graft polymerization, thereby forming a polymer film that is chemically attached to the natural stone, rather than typical physical bonding of other sealer compositions. The natural stones react with a graft initiator in the composition, which creates the reaction sites on the natural stone surface via free radical mechanisms. This in turn renders the natural stone to be receptive to attachment of monomers/prepolymers forming a polymeric film chemically bonded to the natural stone which then has the desired properties in terms of resistance to staining, etching, water penetration, etc., used in homes and light commercial applications, as well as for exterior use on building facades, monuments and the like.

An artificial textured stone slab and methods for manufacturing thereof, the method comprising the following steps: Step S01: using a printer to print an image in accordance with the size of an artificial stone slab to arrive at a print of the image; Step S02: placing the front face of the print onto a side of the artificial stone slab and smoothing out the print on the artificial stone slab; Step S03: feeding the artificial stone attached to the print into a heat and ink transferring machine and using the upper and lower clamp plates of the heat and ink transferring machine to tightly clamp the print to the artificial stone slab; Step S04: heating the artificial stone slab to 120 C. to 185 C. and maintaining for the temperature constant for 5-15 minutes, wherein the ink on the print is transferred onto the surface of the artificial stone slab; and Step S05: feeding the artificial stone slab, heated in accordance with the above step, out of the heat and ink transferring machine, removing the print, and cooling the artificial stone slab to room temperature.

The invention relates synthetic silicate granules comprising a mixture of SiO.sub.2, Al.sub.2O.sub.3 and Na.sub.2O, which can be obtained by sintering; to their use in manufacturing an agglomerate stone material and to the agglomerate stone material resulting thereof.