Water → HCID 86739049, compound

HRID 647233Notes

Reaction equation

HRID 647233 reaction equation
O.S(=O)(=O)(O)O.[Si:7]([O:17]CC)([O:14]CC)([O:11]CC)[O:8][CH2:9][CH3:10].[CH3:20][Si:21]([O:28][CH2:29][CH3:30])([O:25][CH2:26][CH3:27])[O:22][CH2:23][CH3:24]>C(O)C.C(O)(C)C>[Si:7]([O-:17])([O-:14])([O-:11])[O:8][CH2:9][CH3:10].[CH3:20][Si:21]([O:22][CH2:23][CH3:24])([O:28][CH2:29][CH3:30])[O:25][CH2:26][CH3:27]

Participants

7

Reactant 4

HCID 962WaterHCID 1118Sulfuric AcidHCID 6517TetraethoxysilaneHCID 16241Triethoxymethylsilane

Product 1

HCID 86739049HCID 86739049, compoundYield 90%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 3776IsopropanolSolvent

Procedure

A sample of 90% hydrolyzed ethyl silicate/methyltriethoxy silane co-condensate was prepared by adding water (11 grams) containing a trace of sulfuric acid to a solution of tetraethyl orthosilicate (37.5 grams) and methyl triethoxy silane (37.5 grams) in anhydrous ethanol (75 grams). Ethocel (4.5 grams) was added to thicken the solution. To a portion (11.5 grams) of the solution was added a 60% total solids TiO2 dispersion in isopropanol (40.3 grams) and a dispersing aid, Nuosperse 657 (3.5 grams). A 2 mil dry coating was prepared on a three by six inch steel Q panel and conditioned for 15 minutes at 200° C. The coated panel was then placed in a muffle furnace at 510° C. and its condition checked after 1, 2, 3, and 4 hours. At all times, the coating remained white, uncracked and adhered to the substrate. In comparison with the results contained in Control B and Examples 1-9, this demonstrates the usefulness of the highly filled co-condensate in this elevated temperature application.

Workup

  1. customwas then placed in a muffle furnace at 510° C.
  2. customafter 1, 2, 3, and 4 hours

Sources & evidence

ORD record
ord-678ea75c2fd340329f6a9c16f6b4192e
Source dataset
uspto-grants-1983_10
Patent number
US04408009

Reaction notes

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