ADITIVO DE ANTIDEFORMACIÓN SELECCIONADO ENTRE ÁCIDO DESHIDROASCÓRBICO, DESHIDROASCORBATO O ÁCIDO SEMIDESHIDROASCÓRBICO PARA LA PREPARACIÓN DE PRODUCTOS DE YESO

    公开(公告)号:CU20140053A7

    公开(公告)日:2014-11-27

    申请号:CU20140053

    申请日:2014-05-07

    Abstract: La presente invención proporciona una composición de yeso, una placa de yeso y su procedimiento de preparación, y al uso de DHA como aditivo anticombado en un producto de yeso. Dicha placa de yeso comprende yeso fraguado preparado a partir de la composición; mientras que dicha composición comprende yeso, y un aditivo antideformación, en la que el aditivo antideformación comprende al menos uno seleccionado de un grupo constituido por ácido deshidroascórbico, deshidroascorbato y ácido semideshidroascórbico. El yeso fraguado preparado a partir de dicha composición muestra mejor propiedad anticombado o de resistencia a la deformación. El producto de yeso de la presente invención se deforma difícilmente y tiene mayor estabilidad incluso en la condición de alta humedad, mejorándose así la calidad del producto de yeso para responder a las exigencias del cliente.

    Anti-sagging gypsum product and a method to manufacture

    公开(公告)号:AU2012387603A1

    公开(公告)日:2014-06-19

    申请号:AU2012387603

    申请日:2012-12-03

    Abstract: Unitalen Ref: OP1312-08-0766 Client Ref.: P2012/14-AU PCT_Original The present invention provides a composition, a gypsum board and their preparation method and the use of ascorbic acid as an anti-sagging additive in a gypsum board. Said gypsum board comprises set gypsum prepared from the composition; while said composition comprises hemi-hydrate gypsum, water and a compound comprising" - C=C- " group and no carboxylate groups. The set gypsum prepared from the said composition shows better anti-sagging or deformation resisting property. The gypsum board of the present invention is hardly distorted and has stronger stability even in the condition of high humidity, thus improve the quality of the gypsum board to meet the demands of the customer. -22-

    CHEMICAL ADDITIVE FOR GYPSUM PRODUCTS

    公开(公告)号:CA2842220C

    公开(公告)日:2016-03-29

    申请号:CA2842220

    申请日:2012-12-03

    Abstract: The present invention provides a gypsum composition, a gypsum board and their preparation method and the use of DHA as an anti-sagging additive in a gypsum product. Said gypsum board comprises set gypsum prepared from the composition; while said composition comprises gypsum, and an anti-deformation additive, wherein the anti-deformation additive comprises at least one selected from a group consisting of dehydroascorbic acid, dehydroascorbate and semidehydroascorbic acid. The set gypsum prepared from the said composition shows better anti-sagging or deformation resisting property. The gypsum product of the present invention is hardly distorted and has stronger stability even in the condition of high humidity, thus improve the quality of the gypsum product to meet the demands of the customer.

    ANTI-SAGGING GYPSUM PRODUCT AND A METHOD TO MANUFACTURE

    公开(公告)号:CA2842221C

    公开(公告)日:2016-03-22

    申请号:CA2842221

    申请日:2012-12-03

    Abstract: The present invention provides a composition, a gypsum board and their preparation method and the use of ascorbic acid as an anti-sagging additive in a gypsum board. Said gypsum board comprises set gypsum prepared from the composition; while said composition comprises hemi-hydrate gypsum, water and a compound comprising (see above formula) group and no carboxylate groups. The set gypsum prepared from the said composition shows better anti-sagging or deformation resisting property. The gypsum board of the present invention is hardly distorted and has stronger stability even in the condition of high humidity, thus improve the quality of the gypsum board to meet the demands of the customer.

    Chemical additive for gypsum products

    公开(公告)号:AU2012387288A1

    公开(公告)日:2014-06-19

    申请号:AU2012387288

    申请日:2012-12-03

    Abstract: Unitalen Ref: OP1312-08-0767 Client Ref.: P2012/63-AU PCT_Original The present invention provides a gypsum composition, a gypsum board and their preparation method and the use of DHA as an anti-sagging additive in a gypsum product. Said gypsum board comprises set gypsum prepared from the composition; while said composition comprises gypsum, and an anti-deformation additive, wherein the anti-deformation additive comprises at least one selected from a group consisting of dehydroascorbic acid, dehydroascorbate and semidehydroascorbic acid. The set gypsum prepared from the said composition shows better anti-sagging or deformation resisting property. The gypsum product of the present invention is hardly distorted and has stronger stability even in the condition of high humidity, thus improve the quality of the gypsum product to meet the demands of the customer. -11-

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