Sodium orthosilicate → APB silicate

HRID 1657555Notes

Reaction equation

[Si:1]([O-:5])([O-:4])([O-:3])[O-:2].[Na+].[Na+].[Na+].[Na+].[B:10]([O-:13])([O-:12])[O-:11].[B:14]([O-:17])([O-:16])[O-:15].[B:18]([O-:21])([O-:20])[O-:19].[B:22]([O-:25])([O-:24])[O-:23].[B:26]([O-:29])([O-:28])[O-:27].[NH4+:30].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+]>>[B:10]([O-:13])([O-:12])[O-:11].[B:14]([O-:17])([O-:16])[O-:15].[B:18]([O-:21])([O-:20])[O-:19].[B:22]([O-:25])([O-:24])[O-:23].[B:26]([O-:29])([O-:28])[O-:27].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[NH4+:30].[Si:1]([O-:5])([O-:4])([O-:3])[O-:2]

Participants

Reactant 2

HCID 26051Sodium orthosilicate3×

HCID 53249254Ammoniumpentaborate3×

Product 1

HCID 131710290APB silicate

Procedure

In the film-forming system that we have found of particular advantage in carrying out our invention comprising a homogeneous solution of sodium silicate and a polysalt, the ratio of a polysalt solids to silicate solids should be between 0.02/1.0 and 3.0/1.0. If a solution of ammonium pentaborate and sodium silicate is used the solids would be 5 to 35% with 3 to 15% ammonium pentaborate (APB) with a ratio of APB solids to sodium silicate solids between 0.03:1 and 0.5:1 and preferably 0.06:1 and 0.5:1. Therefore the suspension-solution using such a film-forming system would have the following composition. The total solids (film-forming + particulate) are 5.25 to 68%, the dissolved film-forming solids (APB + silicate) are 5.0 to 34.5% with 2.4 to 12% dissolved APB solids, and the suspended particulate solids are 0.25 to 51.2%. A system including sodium pentaborate (SPB) would have a ratio of SPB solids to sodium silicate between 0.02:1 and 0.3:1 and the suspension-solution would have the following composition. The total solids (film-forming + particulate) are 18.2 to 68%, the dissolved film-forming solids (SPB + silicate) are 17.4 to 34.5% with 6 to 7% SPB and the suspended particulate solids is 0.9 to 51.2%. A system with sodium hexametaphosphate (SHP) would have a ratio of SHP solids to sodium silicate solids between 1:1 and 3:1 and the suspension-solution would have the following composition. The total solids (film-forming + particulate) are 31 to 80%, the dissolved film-forming solids (SHP + silicate) are 29.6 to 48% and the suspended particulate solids are 1.5 to 60%.

Workup

customThe total solids (film-forming + particulate)

Sources & evidence

ORD record: ord-3bc06b57f2844aa1ab504050b2ed59c0
Source dataset: uspto-grants-1976_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US03960583

Reaction notes

Loading…