US4591652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhydroxyl silanes or siloxanes
Assignee: PCR Inc
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Filing: 1985-04-12
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Granted: 1986-05-27
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Expires: 2005-04-12
Abstract
Abstract Polyhydroxyl silanes or siloxanes useful as vehicles for coatings applicable to metal, mineral or glass surfaces, are made by reacting a silane or siloxane having an amine terminated substituent attached to silicon with an aldonic acid lactone. Reaction occurs at temperatures below 80° C. in alcohol solution under inert gas blanket. Products are water soluble and polymerizable at slightly elevated temperatures to hard, water insoluble tightly adhering films.
Inventors
- 👤 Ralph J. DePasquale
- 👤 Michael E. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:04
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/0834; C07F7/0838
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
A hydrophilic silane having the general formula: ##STR5## wherein R 1 and R 2 are independently selected from C 1 -C 3 monovalent hydrocarbon radicals; R 3 is a divalent radical selected from C 1 -C 12 hydrocarbon radicals; --(CH 2 ) 3 --(NHCH 2 CH 2 )-- 1-20 ; ##STR6## phenylene; R 4 is selected from hydrogen, R 1 and phenyl; x is 0, 1, 2, or 3, and n is an integer from 3 to 5.
Claim 2
Dependent Claim
78 words
A hydrophilic silane having the general formula: ##STR5## wherein R 1 and R 2 are independently selected from C 1 -C 3 monovalent hydrocarbon radicals; R 3 is a divalent radical selected from C 1 -C 12 hydrocarbon radicals; --(CH 2 ) 3 --(NHCH 2 CH 2 )-- 1-20 ; ##STR6## phenylene; R 4 is selected from hydrogen, R 1 and phenyl; x is 0, 1, 2, or 3, and n is an integer from 3 to 5.
Claim 3
Dependent Claim
12 words
A hydrophilic silane as defined in claim 1 wherein n is 4.
Claim 4
Dependent Claim
21 words
A hydrophilic silane as defined in claim 1 wherein R 1 is ethyl, x is 3, and R 3 is propylene.
Claim 5
Dependent Claim
21 words
A hydrophilic silane as defined in claim 1 wherein R 1 is methyl, x is 3 and R 3 is propylene.
Claim 6
Dependent Claim
24 words
A hydrophilic silane as defined in claim 1 wherein R 1 is ethyl, x is 3, R 3 is propylene and n is 4.
Claim 7
Dependent Claim
22 words
A hydrophilic silane as defined in claim 1 wherein R 1 is ethyl, x is 3, and R 3 is 2-(3-aminopropyl)amino ethyl.
Claim 8
Dependent Claim
12 words
A hydrophilic silane as defined in claim 6 wherein n is 4.
Claim 9
Dependent Claim
101 words
A process for making a hydrophilic silane having the general formula: ##STR7## by reacting substantially equimolar quantities of a silane having the formula: ##STR8## with an aldonic acid lactone in the presence of a lower alkanol and an inert atmosphere wherein R 1 and R 2 are independently selected from C 1 -C 3 monovalent hydrocarbon radicals, R 3 is a divalent radical selected from C 1 -C 12 hydrocarbon radicals; --(CH 2 ) 3 --(NHCH 2 CH 2 )-- 1-20 ; ##STR9## phenylene; R 4 is selected from hydrogen, R 1 and phenyl; x is 0-3 and n is 3-5.
Claim 10
Dependent Claim
101 words
A process for making a hydrophilic silane having the general formula: ##STR7## by reacting substantially equimolar quantities of a silane having the formula: ##STR8## with an aldonic acid lactone in the presence of a lower alkanol and an inert atmosphere wherein R 1 and R 2 are independently selected from C 1 -C 3 monovalent hydrocarbon radicals, R 3 is a divalent radical selected from C 1 -C 12 hydrocarbon radicals; --(CH 2 ) 3 --(NHCH 2 CH 2 )-- 1-20 ; ##STR9## phenylene; R 4 is selected from hydrogen, R 1 and phenyl; x is 0-3 and n is 3-5.
Claim 11
Dependent Claim
14 words
A process as defined in claim 8 wherein the aldonic acid lactone is gluconolactone.
Claim 12
Dependent Claim
17 words
A process as defined in claim 8 wherein x is 3 and R 1 is lower alkyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |