Polyurethane foam resin stabilizers
Abstract
Abstract Polyurethane foam resins having improved physical properties are produced by incorporating in the reaction mixture a siloxane modified carbamic acid derivative foam stabilizer having at least one structural unit of the formula AND OTHER STRUCTURAL UNITS OF THE FORMULA BUT IN WHICH AT LEAST ONE IN A THOUSAND STRUCTURAL UNITS CORRESPONDS TO THE FIRST MENTIONED FORMULA, AND R'' represents an optionally halogenated or cyano-substituted C1 to C10 alkyl, C4 to C10 cycloalkyl or C6 to C10 aryl radical, R'''' represents a hydrogen atom of a methyl or phenyl radical, R'''''' represents a C1 to C10 alkyl, C4 to C10 cycloalkyl, C2 to C10 alkenyl, C7 to C10 aralkyl, di-(C1 - C10 alkyl)-amino-C1C10 alkyl, C6 to C10 aryl or C7 to C10 alkaryl radical, Q represents a monovalent to hexavalent saturated C1 to C6 alkyl radical, or a monovalent to trivalent C6 aryl radical, M 0, 1 OR 2, N 2, 3 OR 4, A 0, 1, 2 OR 3, B REPRESENTS AN INTEGER OF 1 TO 200, AND C REPRESENTS THE VALENCY OF Q, the radicals and numerical values at each position of a molecule being chosen independently of the others.
Inventors
- 👤 M Dahm
- 👤 K Kraft
- 👤 M Roegler
Bibliographic Details
Claims Analysis
Total Claims: 9References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |