Chemical absorbent
AssigneeIntersurgical AG
InventorMichael John Holder
Life of this patent
Estimating the term…
Abstract
A chemical absorbent comprising a hydrated mixture of a major proportion of a pharmaceutically acceptable hydroxide of a Group II metal and a minor proportion of a Group I metal-containing zeolite. The chemical absorbent is substantially free of hydroxides of Group I metals.
Claims16
A chemical absorbent consisting of:
- a hydrated mixture of a major proportion of a pharmaceutically acceptable hydroxide of a Group II metal and a minor proportion of a Group I metal-containing zeolite, and one or more pH-sensitive dyes and/or other pigments;
- wherein
- the pharmaceutically acceptable hydroxide of a Group II metal is present in an amount of between 92% and 97% w/w of the chemical absorbent (on a dry basis);
- the Group I metal-containing zeolite is present in an amount of between 3% and 8% w/w of the chemical absorbent (on a dry basis);
- the dyes and/or pigments are present in an amount of less than 0.5% w/w of the chemical absorbent (on a dry basis);
- the chemical absorbent contains less than 0.5% w/w (on a dry basis) of hydroxides of Group I metals;
- and
- the chemical absorbent has a water content of between 12% and 21% w/w.
A chemical absorbent comprising a hydrated mixture of a major proportion of a pharmaceutically acceptable hydroxide of a Group II metal and a minor proportion of a Group I metal-containing zeolite, the chemical absorbent comprising less than 0.5% w/w of hydroxides of Group I metals, other components being present only in amounts of less than 1% w/w (on a dry basis).
Dependencies are inferred from the claim text.