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 resin

Info

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
Application number
JP6183878A
Other languages
Japanese (ja)
Other versions
JPS6118574B2 (en
Inventor
Itaru Hatano
Masaharu Abe
Yasuo Fushiki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP6183878A priority Critical patent/JPS54153846A/en
Publication of JPS54153846A publication Critical patent/JPS54153846A/en
Publication of JPS6118574B2 publication Critical patent/JPS6118574B2/ja
Granted legal-status Critical Current

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
JP6183878A 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 Granted JPS54153846A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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