Patent EP0276860A2 successfully refreshed from Google Patents.
EP0276860A2
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Method for preparing urea-functional organosilicon compounds
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1988-01-28
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Granted: —
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Expires: 2008-01-28
Abstract
Abstract The invention relates to a method for preparing urea-functional organosilicon compounds having the general formula wherein said method for preparation is characterized by the reaction of urea with an amino group-containing alkoxvsilane havina the aeneral formula
Inventors
- 👤 Shoji Akamatsu
- 👤 Hiroshi Masaoka
- 👤 Hiroji Enami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 21:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/544; C08K5/5455; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1892
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
A method for preparing urea-functional orqanosilicon compounds of the qeneral formula said method being characterized by the reaction of urea with an amino grop-containing alkoxysilane of the aeneral formula wherein R 1 is a monovalent hydrocarbon group having one to six carbon atoms; R 2 is a divalent hydrocarbon group having one to six carbon atoms; R 3 is an alkyl group having one to four carbon atoms; a is 0, 1, 2, or 3; and b is 0, 1, or 2.
Claim 2
Independent Claim
82 words
A method for preparing urea-functional orqanosilicon compounds of the qeneral formula said method being characterized by the reaction of urea with an amino grop-containing alkoxysilane of the aeneral formula wherein R 1 is a monovalent hydrocarbon group having one to six carbon atoms; R 2 is a divalent hydrocarbon group having one to six carbon atoms; R 3 is an alkyl group having one to four carbon atoms; a is 0, 1, 2, or 3; and b is 0, 1, or 2.
Claim 3
Dependent Claim
63 words
A method as claimed in claim 1, wherein R 1 is selected from the group consisting of methyl, ethyl, propyl, hexyl, vinyl, allyl, propenyl, phenyl and 3,3,3-trifluoropropyl groups, R 2 is selected from the group consisting of methylene, ethylene, propylene, isbutylene, octylene and hexylene groups, and R 3 is selected from the group consisting of methyl, ethyl, normal-propyl, isopropyl, normal-butyl and isobutyl groups.
Claim 4
Dependent Claim
50 words
A method as claimed in claim 2, wherein said amino-group containing alkoxysilane is selected from the group consisting of aminomethyltrimethoxysilane, aminomethyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, gamma-(2-amino-ethyl)aminopropyltrimethoxysilane, gamma-(2-aminoethyl) aminopropyltriethoxysilane, gamme-diethylenetriaminopropyltrimethoxysilane, gamma-diethylenetriaminopropyltriethoxysilane, aminomethylmethyldimethoxysilane, aminomethylmethyldiethoxysilane, gamma-aminopropylmethyldimethoxysilane, gamma-aminopropylmethyldiethoxysilane, gamma-(2-aminoethyl)aminopropylmethyldimethoxysilane, gamma-(2-aminoethyl)-4-aminopropylmethyldiethoxysilane, gamma-diethylenetriaminopropylmethyldimethoxysilane, gamme-diethylenetriaminopropylmethyldiethoxysilane, aminomethylmethyldipropoxysilane, aminomethylethyldiethoxysilane, gamma-aminopropylmethyldipropoxysilane, gamma-aminopropylethyldiethoxysilane, gamma-(2-aminoethyl)-aminopropylmethyldipropoxysilane, gamma-(2-aminoethyl)aminopropylethyldiethoxysi lane, gamma- diethylenetriaminopropylmethyldipropoxysilane, gamma-diethylenetriaminopropylethyldiethoxysilane, gamma-(2-aminoethyl)aminoisobutyltrimethoxysi lane and gamma-(2-aminoethyl)-aminoisubutylmethyldimethoxysilane.
Claim 5
Independent Claim
134 words
A method for preparing urea-functional organosilicon compounds by reacting urea with an amino group-containing alkoxysilane of the general formula wherein R 1 is a monovalent hydrocarbon group having one to six carbon atoms; R 2 is a divalent hydrocarbon group having one to six carbon atoms; R 3 is an alkyl group having one to four carbon atoms; a is 0, 1, 2, or 3; and b is 0, 1, or 2, said method of preparing urea-functional organosilicon comprises reacting said amino group-containing alkoxysilane with urea at a mole ratio of from 0.8-3.0 : 1, at a reaction temperature in the range of from 70-200°C and discharging by-product ammonia gas evolved thereby, producing compounds of the formula OR3)3-bwherein R 1 , R 2 , R 3 , a and b are as defined above.
Claim 6
Independent Claim
134 words
A method for preparing urea-functional organosilicon compounds by reacting urea with an amino group-containing alkoxysilane of the general formula wherein R 1 is a monovalent hydrocarbon group having one to six carbon atoms; R 2 is a divalent hydrocarbon group having one to six carbon atoms; R 3 is an alkyl group having one to four carbon atoms; a is 0, 1, 2, or 3; and b is 0, 1, or 2, said method of preparing urea-functional organosilicon comprises reacting said amino group-containing alkoxysilane with urea at a mole ratio of from 0.8-3.0 : 1, at a reaction temperature in the range of from 70-200°C and discharging by-product ammonia gas evolved thereby, producing compounds of the formula OR3)3-bwherein R 1 , R 2 , R 3 , a and b are as defined above.
Claim 7
Dependent Claim
18 words
A method as claimed in claim 4, wherein said reaction temperature is in the range of from 100-150°C.
Claim 8
Dependent Claim
40 words
A method as claimed in claim 4, wherein said amino group-containing alkoxysiloane and urea are reacted in a reaction medium, said reaction medium being selected from the group consisting of araomatic hydrocarbon solvents, aliphatic hydrocarbon solvents and halogenated hydrocarbon solvents.
Claim 9
Dependent Claim
63 words
A method as claimed in claim 4, wherein R 1 is selected from the group consisting of methyl, ethyl, propyl, hexyl, vinyl, allyl, propenyl, phenyl and 3,3,3-triflouropropyl groups, R 2 is selected from the group consisting of methylene, ethylene, propylene, isobutylene, octylene and hexylene groups, and R 3 is selected from the group consisting of methyl, ethyl, normal-propyl, isopropyl, normal-butyl and isobutyl groups.
Claim 10
Dependent Claim
48 words
A method as claimed in claim 4, wherein said amino-group containg alkoxysilane is selected from the group consisting of aminomethyltrimethoxysilane, aminomethyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, gamma-(2-amino-ethyl)aminpropyltrimethoxysilane, gamma-(2-aminoethyl)aminopropyltriethoxysilane, gamma-diethylenetriaminopropyltrimethoxysilane, gamma-diethylenetriaminopropyltriethoxysilane, aminomethylmethyl dimethoxysilane, aminomethylmethyldiethoxysilane, gamma-aminopropylmethyldimethoxysilane, gamma-aminopropylmethyldiethoxysilane, gamma-(2-aminoethyl)aminopropylmethyldimethoxysilane, gamma-(2-aminoethyl)-4-aminopropylmethyldiethoxysilane, gamma-diethylenetriaminopropylmethyldimethoxysilane, gamma-diethylenetriaminopropylmethyldiethoxysilane, aminomethylmethyldipropoxysilane, aminomethylethyldiethoxysilane, gamma-aminopropylmethyldipropoxysilane, gamma-aminopropylethyldiethoxysilane, gamma-(2-aminoethyl)-aminopropylmethyldipropoxysilane, gamma-(2-aminoethyl)aminopropylethyldiethoxysilane, gamma-diethylene-triaminopropylmethyldipropoxysilane, gamma-diethylene-triaminopropylethyldiethoxysilane, gamma-(2-aminoethyl)-aminoisobutyltrimethoxysilane and gamma-(2-aminoethyl)-aminoisobutylmethyl- dimethoxysilane.
References Cited (Backward Citations)
No citation records indexed.
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