Abstract: The production of shaped glass articles is undertaken by an injection moulding process by charging a particulate inorganic glass having a transformation temperature of not greater than 300.degree. C to an injection moulding machine; by converting the glass to a molten state in the barrel of the machine; and by injecting the molten glass into a mould on the machine.

Abstract: A glass having a good combination of anti-misting properties and durability to water is produced from an inorganic glass composition comprising:A. P.sub.2 O.sub.5 -- 52 to 72 mole %B. one or more oxides selected from B.sub.2 O.sub.3, SiO.sub.2 and Al.sub.2 O.sub.3 -- in total more than 3.5 mole % and not more than 12 mole %.C. PbO -- 1 to 12 mole% andD. alkali metal oxides, alkaline earth metal oxides or zinc oxide -- in total 4 to 30 mole %.

Abstract: An optical article, for example, a lens, window or mirror, at least part of the surface of which, and preferably the whole of which, is an inorganic oxide glass having a P.sub.2 O.sub.5 content of at least 52 mole %, and preferably 55 to 68.5 mole %, an alkaline earth content of 2.7 to 20 mole %, and a transformation temperature of not greater than 300.degree. C, the glass optionally containing B.sub.2 O.sub.3 and at least one alkali metal oxide.

Abstract: Phosphate glasses containing minor amounts of the oxides of chromium, molybdenum and tungsten (Group VIb) have improved water resistance and low softening points. Suitable compositions are within the range (moles percent)P.sub.2 o.sub.5 50-75Group VIb oxides 0.1-10, comprising singly or in combination CrO.sub.3 up to 2.6, MoO.sub.3 up to 7, WO.sub.3 up to 7At least one oxide selected from alkali metal oxides and alkaline earths 15- 49.9Addition of oxidizing agents (e.g. sodium nitrate) to the melt may be used to keep the Group VIb metals in the hexavalent state.