US4847328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid acrylic star polymers
Assignee: EIDP Inc
•
Filing: 1987-03-30
•
Granted: 1989-07-11
•
Expires: 2007-03-30
Abstract
Abstract Hybrid star polymers with functional acrylic arms and crosslinked cores.
Inventors
- 👤 Clyde S. Hutchins
- 👤 Harry J. Spinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:00
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6245; C08G59/00; C08G59/18; C08G59/40; C08G85/00; Y; Y10; Y10S; Y10S424/00; Y10S424/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
A hybrid star polymer which comprises a. a crosslinked core comprising a condensation polymer, and b. attached to the core, at least 5 arms comprising acrylic block polymer chains with functional groups at the end of the chains which is attached to the core, wherein the condensation core polymer is the reaction product of the functional groups on the block polymer chains either with themselves or with added ingredients.
Claim 2
Dependent Claim
69 words
A hybrid star polymer which comprises a. a crosslinked core comprising a condensation polymer, and b. attached to the core, at least 5 arms comprising acrylic block polymer chains with functional groups at the end of the chains which is attached to the core, wherein the condensation core polymer is the reaction product of the functional groups on the block polymer chains either with themselves or with added ingredients.
Claim 3
Dependent Claim
27 words
A hybrid star polymer of claim 1 wherein the functional group in the arms is a hydroxyl group, an amine, an unsaturated group, or an epoxy group.
Claim 4
Dependent Claim
19 words
The hybrid star polymer of claim 2 wherein the functional group is an epoxy group derived from glycidyl methacrylate.
Claim 5
Dependent Claim
29 words
The hybrid star polymer of claim 1 wherein the core ingredients are selected from the group consisting of diacids, anhydrides, diamines, diphenols, diepoxides, polyesters, polyethers, polyisocyanates, dialdehydes, diketones, melamines.
References Cited (Backward Citations)
US4085168A
Cited
US3781380A
Cited
DE2333307A1
Cited
JPS50115241A
Cited
US4659782A
Cited
US4659783A
Cited
US4695607A
Cited
US4548963A
Cited
US4616066A
Cited
US4656226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |