A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Process for manufacturing high-expansion gypsum plaster composition and high-expansion gypsum plaster composition obtained by said process
The purpose of the present invention is to provide a high-expansion gypsum plaster composition which is obtained by enhancing the expansion coefficient of a general-purpose dental gypsum plaster material or the like easily and effectively without using any special material by adding an inexpensive additive even in a small amount to a level that a conventional technique has not achieved, more specifically, to provide a high-expansion gypsum plaster composition which exhibits a setting expansion coefficient that is suitably controlled so as to precisely accommodate the shrinkage of a used resin and which is useful in making a model to be used in making a "non-clasp denture" which is unproblematic in occlusion (fitness). The purpose is achieved by a process for manufacturing a high-expansion gypsum plaster composition, said process including: subjecting a powdery gypsum plaster composition material which comprises both calcined gypsum as the main component and gypsum dihydrate to dry co-pulverization; and thus manufacturing a gypsum composition having an enhanced setting expansion coefficient.
Process for manufacturing high-expansion gypsum plaster composition and high-expansion gypsum plaster composition obtained by said process
The purpose of the present invention is to provide a high-expansion gypsum plaster composition which is obtained by enhancing the expansion coefficient of a general-purpose dental gypsum plaster material or the like easily and effectively without using any special material by adding an inexpensive additive even in a small amount to a level that a conventional technique has not achieved, more specifically, to provide a high-expansion gypsum plaster composition which exhibits a setting expansion coefficient that is suitably controlled so as to precisely accommodate the shrinkage of a used resin and which is useful in making a model to be used in making a "non-clasp denture" which is unproblematic in occlusion (fitness). The purpose is achieved by a process for manufacturing a high-expansion gypsum plaster composition, said process including: subjecting a powdery gypsum plaster composition material which comprises both calcined gypsum as the main component and gypsum dihydrate to dry co-pulverization; and thus manufacturing a gypsum composition having an enhanced setting expansion coefficient.
Process for manufacturing high-expansion gypsum plaster composition and high-expansion gypsum plaster composition obtained by said process
ICHINO YUSUKE (author) / YOSHIKANE MASATO (author)
2015-05-06
Patent
Electronic Resource
English
European Patent Office | 2017
| European Patent Office | 2015
| European Patent Office | 2015
Composition for gypsum board, gypsum plaster board and preparation method of gypsum plaster board
| European Patent Office | 2024
METHOD FOR PRODUCING GYPSUM PLASTER BOARD, AND GYPSUM PLASTER BOARD OBTAINED THEREBY
| European Patent Office | 2019