Patent US4714428A successfully refreshed from Google Patents.
Patent US4347338A successfully refreshed from Google Patents.
US4347338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing thermosettable polyurethane which comprises blending a polyisocyanate with a first thermoplastic resin and then blending with a second thermoplastic resin which is a polyurethane
Assignee: Dainichiseika Color and Chemicals Mfg Co Ltd
•
Filing: 1981-05-19
•
Granted: 1982-08-31
•
Expires: 2001-05-19
Abstract
Abstract A thermosettable polyurethane product is prepared by blending a compound having two or more terminal isocyanate groups to a thermoplastic resin which is inert to said isocyanate group to prepare an isocyanate compound batch, and further blending the isocyanate compound batch to a thermoplastic polyurethane resin and fabricating the resulting mixture.
Inventors
- 👤 Hideyasu Torii
- 👤 Susumu Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:27
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/708; C08G18/08; C08G18/0895; C08G18/10; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
54 words
A process for preparing a thermosettable polyurethane product which comprises blending a compound having two or more terminal isocyanate groups with a thermoplastic resin which is inert to an isocyanate group to prepare an isocyanate compound batch and further blending the isocyanate compound batch with a thermoplastic polyurethane resin and fabricating the resulting mixture.
Claim 2
Dependent Claim
54 words
A process for preparing a thermosettable polyurethane product which comprises blending a compound having two or more terminal isocyanate groups with a thermoplastic resin which is inert to an isocyanate group to prepare an isocyanate compound batch and further blending the isocyanate compound batch with a thermoplastic polyurethane resin and fabricating the resulting mixture.
Claim 3
Dependent Claim
15 words
The process according to claim 1 wherein said fabrication is carried out by an extruder.
Claim 4
Dependent Claim
21 words
The process according to claim 1 wherein said fabrication is carried out by an injection molding machine or a rolling machine.
Claim 5
Dependent Claim
30 words
The process according to claim 1 wherein 5 to 100 wt.parts of said isocyanate compound is blended to 100 wt.parts of said thermoplastic resin to prepare an isocyanate compound batch.
Claim 6
Dependent Claim
31 words
The process according to claim 1 wherein an amount of said isocyanate compound batch is in a range of 1 to 100 wt.parts per 100 wt.parts of said thermoplastic polyurethane resin.
References Cited (Backward Citations)
US4048253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |