US5767199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shelf stable compositions containing acetoacetate functional polymer and polyformal
Assignee: Rohm and Haas Co
•
Filing: 1992-07-29
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Granted: 1998-06-16
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Expires: 2012-07-29
Abstract
Abstract An air-curing composition is disclosed which contains an acetoacetate functional polymer and an end-blocked polyformaldehyde chain. The composition is stable to reaction until the formaldehyde is released from the polyformaldehyde chain.
Inventors
- 👤 Daniel Arthur Bors
- 👤 William David Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:10
CPC Classifications
C; C08; C08L; C08L31/00; C08L31/02; C08L33/00; C08L33/04; C08L33/06; C08L33/062; C08L57/00; C08L57/04; C08L59/00; C08L51/00; C08L51/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
48 words
A shelf stable, air-curing composition comprising an acetoacetate functional polymer, a metal drier, and a polyformaldehyde chain endblocked with autoxidizable end groups, said polyformaldehyde chain having from 1 to 14 formaldehyde units and being liquid and soluble in the acetoacetate polymer, stored in the absence of atmospheric oxygen.
Claim 2
Dependent Claim
48 words
A shelf stable, air-curing composition comprising an acetoacetate functional polymer, a metal drier, and a polyformaldehyde chain endblocked with autoxidizable end groups, said polyformaldehyde chain having from 1 to 14 formaldehyde units and being liquid and soluble in the acetoacetate polymer, stored in the absence of atmospheric oxygen.
Claim 3
Dependent Claim
38 words
The composition of claim 1 in which the metal drier is complexed to an oxime or other complexing reagent that prevents substantial reaction in sealed containers in the absence of oxygen but does not prevent reaction in films.
References Cited (Backward Citations)
US2449469A
Cited
US4960924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-15 | 2001-12-15 | 2002-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-15 | 2005-12-15 | 2006-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-15 | 2009-12-15 | 2010-06-16 | $7700.00 | Window Closed / Lapsed |