Magnesium hydroxides having novel structure, process for production thereof, and resin compositions containing them
CA 1090537 A · Owner: Kyowa Chemical Industry Co. Ltd. · Inventors: Miyata, Shigeo; Kuroda, Masataka; Takasu, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel magnesium hydroxide of the formula Mg(OH)2 having (i) a strain in the (101) direction of not more than 3.0 x 10-3. (ii) a crystallite size in the (101) direction of more than 800 .ANG. and (iii) a specific surface area of less than 20 m2/g. The magnesium hydroxide if desired, as coated with anionic surfactants is useful, for example, as fire retardants for thermoplastic synthetic resins and aqueous paints. The novel magnesium hydroxide is prepared by heating in an aqueous medium at an elevated pressure a novel basic magnesium chloride or nitrate of this invention expressed by the formula Mg(OH)2-xA?mH2O wherein A is Cl or NO3. X is a number of more than 0 but less than 0.2 and, m is …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 2, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 2, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.