Patent US4198328A successfully refreshed from Google Patents.
US4198328A
Expired / Lapsed
US
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Flame-resisting intumescent paints
Assignee: Montedison SpA
•
Filing: 1978-10-06
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Granted: 1980-04-15
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Expires: 1998-10-06
Abstract
Abstract The present invention concerns flame-resisting paints, in particular, those which can be applied on wood, metals and plastic materials or elastomers. More particularly, it concerns "intumescent paints" endowed with excellent fire-resistance characteristics.
Inventors
- 👤 Guido Bertelli
- 👤 Pierpaolo Roma
- 👤 Renato Locatelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:33
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C09D5/185; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2648
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
Intumescent paints endowed with flame-resistance properties, having as essential constituents a polymeric base for paints, a diluent, a source of phosphoric acid, a source of carbon and an intumescing agent, characterized in that said paints contain as a carbon source and intumescing agent a single, water-insoluble, nitrogen containing product chosen from among (a) reaction products of an aldehyde with compounds containing two --NR-- groups or a --NR-- group and a --CO-- and/or --CS-- group inserted in a cyclic structure (wherein R=H or hydroxyalkyl having 1-4 carbon atoms) and (b) reaction products from aliphatic or aromatic diisocyanates or triisocyanates with organic compounds having in the molecule reactive hydrogen atoms.
Claim 2
Dependent Claim
108 words
Intumescent paints endowed with flame-resistance properties, having as essential constituents a polymeric base for paints, a diluent, a source of phosphoric acid, a source of carbon and an intumescing agent, characterized in that said paints contain as a carbon source and intumescing agent a single, water-insoluble, nitrogen containing product chosen from among (a) reaction products of an aldehyde with compounds containing two --NR-- groups or a --NR-- group and a --CO-- and/or --CS-- group inserted in a cyclic structure (wherein R=H or hydroxyalkyl having 1-4 carbon atoms) and (b) reaction products from aliphatic or aromatic diisocyanates or triisocyanates with organic compounds having in the molecule reactive hydrogen atoms.
Claim 3
Dependent Claim
106 words
Paints according to claim 1, characterized in that they consist essentially of: (a) 10-20 parts of a diluent; (b) 30-60 parts of a polymeric base for paints; (c) 15-35 parts of an ammonium or amine phosphate; (d) 7-18 parts of one or more nitrogen containing, water insoluble compounds chosen from amongst (a) reaction products of an aldehyde with compounds containing two --NR-- groups or a --NR-- group and a --CO-- and/or --CS-- group inserted in a cyclic structure (R=H or hydroxyalkyl with 1-4 carbon atoms), and (b) reaction products of aliphatic or aromatic diisocyanates or triisocyanates with organic compounds having in the molecule reactive hydrogen atoms.
Claim 4
Dependent Claim
21 words
Paints according to claim 1, in which as a nitrogen containing, water insoluble product there is used a reaction product ethylene-urea/formaldehyde.
Claim 5
Dependent Claim
21 words
Paints according to claim 1, in which as a nitrogen containing, water insoluble product there is used a reaction product hexahydropyrimidin-2-one/formaldehyde.
Claim 6
Dependent Claim
21 words
Paints according to claim 1, in which as a nitrogen containing, water insoluble product there is used a reaction product piperazine/formaldehyde.
Claim 7
Dependent Claim
22 words
Paints according to claim 1, in which as a nitrogen containing, water insoluble product there is used a reaction product melamine/toluylene 2,4-diisocyanate.
Claim 8
Dependent Claim
22 words
Paints according to claim 1, in which as a nitrogen containing, water insoluble product there is used a reaction product glycerol/toluylene 2,4-diisocyanate.
References Cited (Backward Citations)
US2526462A
Cited
US3247015A
Cited
US3372131A
Cited
GB1061503A
Cited
US3914513A
Cited
US3654190A
Cited
US3733289A
Cited
US3864076A
Cited
US3810862A
Cited
US3908051A
Cited
US3925137A
Cited
US3874990A
Cited
US3934066A
Cited
US3936420A
Cited
US3936416A
Cited
US3957881A
Cited
US3955987A
Cited
US4043987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |