US4160754A
Expired / Lapsed
US
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Stable polymer gels
Assignee: Bayer AG
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Filing: 1978-03-13
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Granted: 1979-07-10
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Expires: 1998-03-13
Abstract
Abstract This invention is directed to gels which are stable in storage, comprising a polymer matrix, a liquid dispersing agent embedded therein and optionally fillers or additives, characterized in that said polymer matrix is a polycondensation product of aldehydes and aminoplast-formers, at least 30% by weight of the aminoplast-formers having a molecular weight of between 200 and 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group.
Inventors
- 👤 Dietmar Schapel
- 👤 Kuno Wagner
- 👤 Hanns P. Muller
- 👤 Manfred Dahm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:37
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/147; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/46; C08J2361/00; C08J2361/20; C08J2361/32; Y; Y10; Y10S; Y10S524/00; Y10S524/916
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
73 words
Gels which are stable in storage, comprising a polymer matrix, a liquid dispersing agent embedded therein and optionally fillers or additives, characterized in that said polymer matrix is a polycondensation product from aldehydes and aminoplast-formers, at least 30% by weight of the aminoplast-formers having a molecular weight of between 200 and 10,000 and containing at least one functional group selected from the group consisting of ether, thioether, acetal, ester, urethane and carbonate groups.
Claim 2
Dependent Claim
73 words
Gels which are stable in storage, comprising a polymer matrix, a liquid dispersing agent embedded therein and optionally fillers or additives, characterized in that said polymer matrix is a polycondensation product from aldehydes and aminoplast-formers, at least 30% by weight of the aminoplast-formers having a molecular weight of between 200 and 10,000 and containing at least one functional group selected from the group consisting of ether, thioether, acetal, ester, urethane and carbonate groups.
Claim 3
Dependent Claim
22 words
The gels of claim 1 wherein at least 50%, by weight of said aminoplast-formers have a molecular weight of 350 to 6,000.
Claim 4
Dependent Claim
22 words
The gels of claim 2 wherein at least 70%, by weight of said aminoplast-formers have a molecular weight of 500 to 4,000.
Claim 5
Dependent Claim
15 words
The gels of claim 1 wherein said aldehydes have from 1 to 8 carbon atoms.
Claim 6
Dependent Claim
20 words
The gels of claim 1 wherein said aminoplast formers have at least two end groups which are capable of aminoplast-formation.
Claim 7
Dependent Claim
11 words
The gels of claim 1 wherein said aminoplast-former is an α,ω-bis-urea.
Claim 8
Dependent Claim
63 words
The gels of claim 6 wherein said α,ω-bis-urea corresponds to the following formula: R(O--CO--NH--R'--NH--CO--NH.sub.2).sub.n wherein R represents a residue of valency n which contains at least one ether, thioether, acetal, ester, ester amide and/or carbonate group and has a molecular weight of between 44 and 10,000; R' represents the residue of a diisocyanate; and n represents an integer of from 2 to 8.
Claim 9
Dependent Claim
11 words
The gels of claim 1 wherein said aminoplast-former is an α,ω-bis-carbamate.
Claim 10
Dependent Claim
24 words
The gels of claim 8 wherein said α,ω-bis-carbamate corresponds to the following formula: R(O--CO--NH.sub.2).sub.n, wherein R and n are defined as in claim 7.
Claim 11
Dependent Claim
15 words
The gels of claim 1 wherein they contain water and/or an alcohol as dispersing agent.
Claim 12
Dependent Claim
58 words
A process for the preparation of gels, comprising: polycondensing aldehydes and N-alkylol compounds of aminoplast-formers, at least 30% by weight having a molecular weight of 200 to 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group, by means of an acid catalyst in the presence of dispersing agents and optionally fillers or additives.
Claim 13
Dependent Claim
58 words
A process for the preparation of gels, comprising: polycondensing aldehydes and N-alkylol compounds of aminoplast-formers, at least 30% by weight having a molecular weight of 200 to 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group, by means of an acid catalyst in the presence of dispersing agents and optionally fillers or additives.
Claim 14
Dependent Claim
67 words
A process for producing carriers for perfumes, comprising adding perfumes during formation of a gel formed by polycondensing aldehydes and N-alkylol compounds of aminoplast-formers, at least 30% by weight having a molecular weight of 200 to 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group, by means of an acid catalyst in the presence of dispersing agents and optionally fillers or additives.
Claim 15
Dependent Claim
67 words
A process for producing carriers for perfumes, comprising adding perfumes during formation of a gel formed by polycondensing aldehydes and N-alkylol compounds of aminoplast-formers, at least 30% by weight having a molecular weight of 200 to 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group, by means of an acid catalyst in the presence of dispersing agents and optionally fillers or additives.
References Cited (Backward Citations)
US4018741A
Cited
FR2310774A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |