JPS55151004A - Preparation of radiation-shielding plastic material having excellent transparency and mechanical property - Google Patents
Preparation of radiation-shielding plastic material having excellent transparency and mechanical propertyInfo
- Publication number
- JPS55151004A JPS55151004A JP5935779A JP5935779A JPS55151004A JP S55151004 A JPS55151004 A JP S55151004A JP 5935779 A JP5935779 A JP 5935779A JP 5935779 A JP5935779 A JP 5935779A JP S55151004 A JPS55151004 A JP S55151004A
- Authority
- JP
- Japan
- Prior art keywords
- component
- meth
- radiation
- mixture
- plastic material
- 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.)
- Pending
Links
Landscapes
- Polymerisation Methods In General (AREA)
Abstract
PURPOSE: To prepare a radiation-shielding plastic material having excellent transparency and mechanical properties, by polymerizing a mixture of a specific vinyl monomer, e.g. alkyl (meth)acrylate, and organic acids containing an oxocarboxylic acid, etc. in the presence of a lead compound.
CONSTITUTION: A mixture comprising (A) 6W95pts.wt. of one or more vinyl monomers selected from 1W4C alkyl (meth)acrylates, hydroxyalkyl (meth)acrylates, styrene, etc., and (B) 94W5pts.wt. of a mixture of (a) an essential component comprising one or more compounds selected from oxocarboxylic acids (e.g. levulinic acid), hydroxycarboxylic acids (e.g. lactic acid), their derivatives, etc., and (b) the other organic acids (e.g. methacrylic acid), is polymerized in the presence of a lead compound (e.g. lead monoxide) and a radical polymerization initiator. Preferably the molar ratio of the lead compound to the component (B) is ≤0.5 and the amount of the component (a) is ≥3wt% on the basis of the amount of the component (B).
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5935779A JPS55151004A (en) | 1979-05-15 | 1979-05-15 | Preparation of radiation-shielding plastic material having excellent transparency and mechanical property |
US06/143,516 US4292419A (en) | 1979-05-15 | 1980-04-24 | Process for producing radiation-shielding plastic materials |
DE8080102257T DE3065132D1 (en) | 1979-05-15 | 1980-04-25 | Process for producing radiation-shielding plastic materials |
EP80102257A EP0019121B1 (en) | 1979-05-15 | 1980-04-25 | Process for producing radiation-shielding plastic materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5935779A JPS55151004A (en) | 1979-05-15 | 1979-05-15 | Preparation of radiation-shielding plastic material having excellent transparency and mechanical property |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55151004A true JPS55151004A (en) | 1980-11-25 |
Family
ID=13110926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5935779A Pending JPS55151004A (en) | 1979-05-15 | 1979-05-15 | Preparation of radiation-shielding plastic material having excellent transparency and mechanical property |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55151004A (en) |
-
1979
- 1979-05-15 JP JP5935779A patent/JPS55151004A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS54133583A (en) | Preparation of polymer | |
JPS5679113A (en) | Low-shrinkage unsaturated polyester resin composition | |
JPS56145907A (en) | Production of methacrylic resin having excellent heat distorsion resistance | |
JPS5620169A (en) | Scale inhibitor | |
JPS5443285A (en) | Production of synthetic resin emulsion for cement | |
JPS55151004A (en) | Preparation of radiation-shielding plastic material having excellent transparency and mechanical property | |
JPS5516015A (en) | Styrene-acrylic resin and its production | |
JPS55164209A (en) | Thermoplastic resin lubricant and lubricating thermoplastic resin composition | |
JPS55151005A (en) | Preparation of radiation-shielding plastic material having excellent transparency and mechanical property | |
JPS5780413A (en) | Low-shrinking resin mortar or resin concrete composition | |
JPS572374A (en) | Pressure-sensitive adhesive composition | |
JPS5529501A (en) | Water- and oil-repellent copolymer and its use | |
JPS56136808A (en) | Water absorbing resin | |
JPS5552337A (en) | Surface treating agent for porous inorganic building material | |
JPS5645912A (en) | Vinyl acetate/ethylene copolymer emulsion | |
JPS52108471A (en) | Preparation of vinyl polymer emulsion with use of acrylic polymers mod ified with fatty acids as emulsifiers | |
JPS5628233A (en) | Resin composition | |
JPS5469583A (en) | Polymer emulsifier | |
JPS56127671A (en) | Coating resin composition | |
JPS5543111A (en) | Improved preparation of syrup | |
JPS5384091A (en) | Aqueous dispersion composition | |
GB1002102A (en) | Improvements in synthetic resin compositions | |
JPS5653115A (en) | Preparation of low molecular weight acrylic copolymer | |
JPS55155004A (en) | Methyl methacrylate syrup composition excellent in storage stability | |
JPS5384092A (en) | Preparation of emulsion polymer |