EP0382367A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for the production of organosilicon compounds
Assignee: Dow Silicones UK Ltd
•
Filing: 1990-01-22
•
Granted: —
•
Expires: 2010-01-22
Abstract
Abstract Process for the production of organosilicon condensation products which comprises contacting (A) at least one organosilicon compound having in the molecule at least one silanol group, the organic substituents being selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms, and (B) a borate or phosphate of sodium or potassium. The condensation products find application in, for example textile treatments and paper coating.
Inventors
- 👤 Stephen Westall
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
77 words
A process for the production of an organosilicon condensation product which comprises contacting (A) at least one organosilicon compound having in the molecule at least one silanol group and wherein the silicon-bonded organic substituents are selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms, said substituted hydrocarbon groups being non-acidic in character, and (B) a borate or phosphate of sodium or potassium.
Claim 2
Dependent Claim
77 words
A process for the production of an organosilicon condensation product which comprises contacting (A) at least one organosilicon compound having in the molecule at least one silanol group and wherein the silicon-bonded organic substituents are selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms, said substituted hydrocarbon groups being non-acidic in character, and (B) a borate or phosphate of sodium or potassium.
Claim 3
Dependent Claim
23 words
A process as claimed in Claim 1 wherein (A) and (B) are contacted at a temperature in the range from 70°C to 150°C.
Claim 4
Dependent Claim
24 words
A process as claimed in Claim 1 or Claim 2 wherein (A) and (B) are contacted at a pressure which is less than atmospheric.
Claim 5
Dependent Claim
25 words
A process as claimed in any one of the preceding claims wherein the organosilicon compound (A) is passed over or through a bed containing (B).
Claim 6
Dependent Claim
29 words
A process as claimed in any one of the preceding claims wherein (B) is present dispersed in and/or on a particulate solid which is inert under the reaction conditions.
Claim 7
Dependent Claim
30 words
A process as claimed in any one of the preceding claims wherein organosilicon compound (A) is a substantially linear polydiorganosiloxane having a hydroxyl group attached to each terminal silicon atom.
Claim 8
Dependent Claim
44 words
A process as claimed in Claim 6 wherein organosilicon compound (A) comprises both (i) a polydiorganosiloxane having a hydroxyl group attached to each terminal silicon atom and (ii) a polydiorganosiloxane terminated with a hydroxyl group at one end and triorganosiloxy group at the other.
Claim 9
Dependent Claim
32 words
A process as claimed in any one of the preceding claims wherein the organic substituents present in (A) are predominantly methyl groups, any remaining substituents being selected from phenyl and vinyl groups.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.