US3868342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of condensation products of silicon-containing amines with epoxide compounds
Assignee: Rhone Poulenc SA
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Filing: 1971-11-24
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Granted: 1975-02-25
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Expires: 1991-11-24
Abstract
Abstract WHERE R1 and R2 are H or alkyl, R3 and R4 are p-phenylene or substituted p-phenylene and n is 1 or more. Aqueous emulsions of alkylhydrogenopolysiloxanes containing the condensates as emulsifier and polymerisation catalyst can be used to waterproof fabrics. Condensates having free amino groups are obtained by reaction of at least 0.5 parts by weight of an amine of formula (R''O)3Si R - NH - R - NH2 where R'' alkyl and R alkylene per part by weight of an epoxide
Inventors
- 👤 Robert Magne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:06
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/504; C08L; C08L83/00; C08L83/04; C08G77/00; C08G77/04; C08G77/12; C08G77/22; C08G77/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
79 words
AN AQUEOUS EMULSION COMPRISING AN ALKYLHYDROGENOPOLYSILOXANE AND 2-15% BY WEIGHT BASED ON THE WEIGHT OF THE ALKYLHYDROGENOPOLYSILOXANE OF A CONDENSATE HAVING FREE AMINE GROUPS, OBTAINED BY REACTION OF A SILICONCONTAINING AMINE OF GENERAL FORMULA (R''O)3SI R - NH - R - NH2 IN WHICH THE SYMBOLS R'' WHICH MAY BE INDENTICAL OR DIFFERENT, EACH REPRESENT AN ALKYL RADICAL AND TE SYMBOLS R, WHICH MAY BE INDENTICAL OR DIFFERENT, EACH REPRESENT AN ALKYLENE RADICAL, WITH AN EPOXIDE OF GENERAL FORMULA
Claim 2
Dependent Claim
79 words
AN AQUEOUS EMULSION COMPRISING AN ALKYLHYDROGENOPOLYSILOXANE AND 2-15% BY WEIGHT BASED ON THE WEIGHT OF THE ALKYLHYDROGENOPOLYSILOXANE OF A CONDENSATE HAVING FREE AMINE GROUPS, OBTAINED BY REACTION OF A SILICONCONTAINING AMINE OF GENERAL FORMULA (R''O)3SI R - NH - R - NH2 IN WHICH THE SYMBOLS R'' WHICH MAY BE INDENTICAL OR DIFFERENT, EACH REPRESENT AN ALKYL RADICAL AND TE SYMBOLS R, WHICH MAY BE INDENTICAL OR DIFFERENT, EACH REPRESENT AN ALKYLENE RADICAL, WITH AN EPOXIDE OF GENERAL FORMULA
Claim 3
Dependent Claim
29 words
Emulsion according to claim 1 wherein the condensate is one, in which R1 and R2 each represent a methyl radical and R3 and R4 each represent a p-phenylene radical.
Claim 4
Dependent Claim
26 words
Emulsion according to claim 1 wherein the condensate is one in which R represents a -CH2-CH2-CH2- and /or -CH2-CH2- radical and R'' represents a methyl radical.
Claim 5
Dependent Claim
23 words
Emulsion according to claim 1, wherein the condensate is one in which the weight ratio of amine to epoxide is 0.6:1 to 4:1.
Claim 6
Dependent Claim
32 words
Emulsion according to claim 1, wherein the condensate is one which is a reaction product of 0.7 to 3 parts by weight of 2-aminoethyl-aminopropyl-trimethoxysilane per part by weight of a 2,2-bis-p-hydroxphenyl-propane/epichlorohydrin condensate.
Claim 7
Dependent Claim
15 words
An emulsion according to claim 1 containing a dimethylpolysiloxane of viscosity 1,000-15,000 centistokes at 25*C.
Claim 8
Dependent Claim
40 words
An emulsion according to claim 1 comprising a methylhyrogenopolysiloxane and 4-6% by weight, based on the weight of siloxane, of a reaction product of 0.7 to 3 parts by weight of 2-aminoethylaminopropyl-trimethoxysilane per part by weight of a 2,2-bis-p-hydroxyphenylpropane/epichlorohydrin condensate.
Claim 9
Dependent Claim
25 words
A method of rendering a substrate water-repellent which comprises applying to the substrate an aqueous emulsion according to claim 1 and subsequently drying the substrate.
References Cited (Backward Citations)
US3325439A
Cited
US3220878A
Cited
US3360425A
Cited
US3436251A
Cited
US3305504A
Cited
US3779967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |