Patent US4547580A successfully refreshed from Google Patents.
US4547580A
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Dioxane compounds and their use as insolubilizers for binders for paper coating compositions
Assignee: Omnova Services Inc
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Filing: 1984-11-02
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Granted: 1985-10-15
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Expires: 2004-11-02
Abstract
Abstract Paper coating compositions contain at least one pigment, at least one binder, and, as an insolubilizer for the binder, the product of the reaction of glyoxal and a vicinal polyol.
Inventors
- 👤 William C. Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:21
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/52; D21H19/46
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
39 words
A hemiacetal product of the reaction of glyoxal and a polyol that is selected from the group consisting of maleic acid mono(2,3-dihydroxy-1,4-dioxane-5-methylene ester); the metal alkali salt of maleic acid mono(2,3-dihydroxy-1,4-dioxane-5-methylene ester); and a mixture of 1,2,5,6-di(dihydroxydioxano)-3,4-dihydroxyhexane and 1,2,4,5-di(dihydroxydioxano)-3,6-dihydroxyhexane.
Claim 2
Dependent Claim
39 words
A hemiacetal product of the reaction of glyoxal and a polyol that is selected from the group consisting of maleic acid mono(2,3-dihydroxy-1,4-dioxane-5-methylene ester); the metal alkali salt of maleic acid mono(2,3-dihydroxy-1,4-dioxane-5-methylene ester); and a mixture of 1,2,5,6-di(dihydroxydioxano)-3,4-dihydroxyhexane and 1,2,4,5-di(dihydroxydioxano)-3,6-dihydroxyhexane.
Claim 3
Dependent Claim
4 words
Maleic acid mono(2,3-dihydroxy-1,4-dioxane-5-methylene ester).
Claim 4
Dependent Claim
4 words
Maleic acid mono(2,3-dihydroxy-1,4-dioxane-5-methylene ester).
Claim 5
Dependent Claim
10 words
An alkali metal salt of the acid of claim 2.
Claim 6
Dependent Claim
6 words
A mixture of 1,2,5,6-di(dihydroxydioxano)-3,4-dihydroxyhexane and 1,2,4,5-di(dihydroxydioxano)-3,6-dihydroxyhexane.
Claim 7
Dependent Claim
6 words
A mixture of 1,2,5,6-di(dihydroxydioxano)-3,4-dihydroxyhexane and 1,2,4,5-di(dihydroxydioxano)-3,6-dihydroxyhexane.
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) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |