JPS54153846A - Modified acicular crystals of gypsum suitable for compounding with synthetic resin, its preparation, and composite composition containing said gypsum and synthetic resin - Google Patents
Modified acicular crystals of gypsum suitable for compounding with synthetic resin, its preparation, and composite composition containing said gypsum and synthetic resinInfo
- Publication number
- JPS54153846A JPS54153846A JP6183878A JP6183878A JPS54153846A JP S54153846 A JPS54153846 A JP S54153846A JP 6183878 A JP6183878 A JP 6183878A JP 6183878 A JP6183878 A JP 6183878A JP S54153846 A JPS54153846 A JP S54153846A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum
- synthetic resin
- dihydrate
- compounding
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To prepare acicular crystals of gypsum which give high tensile strength and impact strength when compounded with a synthetic resin, by heating an aqueous slurry containing fine powder of gypsum dihydrate having specific characteristics and hydrated gypsum under high pressure.
CONSTITUTION: An aqueous slurry containing (A) gypsum dihydrate having a solubility of about less than 0.204% measured at about 10 minutes after dispersing into water, and a half value width of (002) X-ray diffraction pattern of about less than 2.5×10-4 radian, and (B) a hydrated gypsum dihydrate prepared by hydrating calcined gypsum, and having specific characteristics described below, is heated under pressure to obtain the objective acicular gypsum crystals. Relationships between the solubility (X%) after about 1 hours from the intiiation of the hydration, the content of the hydrated gypsum dihydrate in the whole gypsum (Z%) and the half value width of (002) X-ray diffraction pattern (Y radian) fall within the hatched regions of the figures.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6183878A JPS54153846A (en) | 1978-05-23 | 1978-05-23 | Modified acicular crystals of gypsum suitable for compounding with synthetic resin, its preparation, and composite composition containing said gypsum and synthetic resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6183878A JPS54153846A (en) | 1978-05-23 | 1978-05-23 | Modified acicular crystals of gypsum suitable for compounding with synthetic resin, its preparation, and composite composition containing said gypsum and synthetic resin |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9708485A Division JPS60243156A (en) | 1985-05-07 | 1985-05-07 | Compounded composition of modified acicular crystal of gypsum and synthetic resin |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54153846A true JPS54153846A (en) | 1979-12-04 |
JPS6118574B2 JPS6118574B2 (en) | 1986-05-13 |
Family
ID=13182627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6183878A Granted JPS54153846A (en) | 1978-05-23 | 1978-05-23 | Modified acicular crystals of gypsum suitable for compounding with synthetic resin, its preparation, and composite composition containing said gypsum and synthetic resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54153846A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6036556A (en) * | 1983-08-09 | 1985-02-25 | Toyo Soda Mfg Co Ltd | Vinyl chloride resin composition |
JP2010517905A (en) * | 2007-02-02 | 2010-05-27 | ケミラ オイ | Gypsum product and method for producing the same |
-
1978
- 1978-05-23 JP JP6183878A patent/JPS54153846A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6036556A (en) * | 1983-08-09 | 1985-02-25 | Toyo Soda Mfg Co Ltd | Vinyl chloride resin composition |
JP2010517905A (en) * | 2007-02-02 | 2010-05-27 | ケミラ オイ | Gypsum product and method for producing the same |
Also Published As
Publication number | Publication date |
---|---|
JPS6118574B2 (en) | 1986-05-13 |
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