Patent US4495341A successfully refreshed from Google Patents.
US4495341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy-modified polyols and polymer-polyols useful in the preparation of improved plastics, including polyurethane foams, elastomers and the like
Assignee: Lyondell Chemical Technology LP
•
Filing: 1983-06-06
•
Granted: 1985-01-22
•
Expires: 2003-06-06
Abstract
Abstract Adducts, improved polymer-polyols and improved polyurethane foams are provided. The adducts are produced by reacting suitable polyol and epoxy co-reactant to essentially eliminate all epoxy groups. The polymer-polyol is produced by polymerizing suitable ethylenically unsaturated monomer in the adduct or in the adduct forming mixture; in the later case the adduct forming reaction and the polymerization reaction occur simultaneously to produce the polymer-polyol. Polyurethane foams are produced by the usual method but employing the novel adduct or polymer-polyol of the present invention.
Inventors
- 👤 Paul Stamberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:08
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/48; C08G18/487; C08G18/4895; C08G18/632; C08G59/00; C08G59/18; C08G59/40; C08G59/62
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
The adduct formed by reaction of a polyol, having an average molecular weight of at least about 500 and a hydroxyl number in the range of about 20 to about 400 with an epoxy co-reactant in which the polyol, the epoxy co-reactant and the adduct are essentially free of ethylenic unsaturation.
Claim 2
Dependent Claim
51 words
The adduct formed by reaction of a polyol, having an average molecular weight of at least about 500 and a hydroxyl number in the range of about 20 to about 400 with an epoxy co-reactant in which the polyol, the epoxy co-reactant and the adduct are essentially free of ethylenic unsaturation.
Claim 3
Dependent Claim
30 words
The adduct of claim 1 in which the amount of said epoxy co-reactant is greater than 2% but less than about 10% by weight based on the amount of polyol.
Claim 4
Dependent Claim
32 words
The adduct of claim 2 in which the polyol is selected from the group consisting of poly(oxypropylene)glycols, poly(oxypropylene)polyols, poly(oxybutylene)glycols, poly(oxybutylene)polyols, poly(oxypropylene-oxyethylene)glycols, and poly(oxypropylene-oxyethylene)polyols and in which the epoxy co-reactant is a diepoxide.
Claim 5
Independent Claim
64 words
A method of producing an adduct comprising the steps of providing a mixture of a polyol having an average molecular weight of at least 500 and an epoxy co-reactant, said epoxy co-reactant being essentially completely reacted such that the resultant adduct is essentially free of epoxy groups, said polyol and said epoxy co-reactant being selected to provide an adduct essentially free of ethylenic unsaturation.
Claim 6
Independent Claim
64 words
A method of producing an adduct comprising the steps of providing a mixture of a polyol having an average molecular weight of at least 500 and an epoxy co-reactant, said epoxy co-reactant being essentially completely reacted such that the resultant adduct is essentially free of epoxy groups, said polyol and said epoxy co-reactant being selected to provide an adduct essentially free of ethylenic unsaturation.
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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |