Patents
US 9944758 B2: Clustered functional polyorganosiloxanes, processes for forming same and methods for their use
- Granted
- 2018-04-17
- Filed
- 2014-02-10 application 14766769
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A hydrosilylation process is used to prepare a clustered functional polyorganosiloxane. The clustered functional polyorganosiloxane comprises a reaction product of a reaction of a) a polyorganosiloxane having an average, per molecule, of at least 2 aliphatically unsaturated organic groups; b) a polyorganohydrogensiloxane having an average of 4 to 15 silicon atoms per molecule; and c) a reactive species having, per molecule at least 1 aliphatically unsaturated organic group and 1 or more radical curable groups selected from an acrylate group and a methacrylate group; in the presence of d) a hydrosilylation catalyst, and e) an isomer reducing agent. The weight percent of silicon bonded hydrogen atoms in component b) divided by the weight percent of aliphatically unsaturated organic groups in component a) (the SiHb/Via ratio) ranges from 4/1 to 20/1. The resulting clustered functional polyorganosiloxane is useful in a curable silicone composition for electronics applications.
Source: PVGPATDIS, file of 2026-04-10 (ipg180417.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Dow Corning Corporation 429 patents | US company or organization | Midland, MI | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jing Jiang | Iowa City, IA | 78 | PVGPATDIS, file of 2026-04-10 | |
| Kristen Steinbrecher | Midland, MI | 4 | PVGPATDIS, file of 2026-04-10 | |
| Yin Tang | Midland, MI | 63 | PVGPATDIS, file of 2026-04-10 | |
| James Tonge | Sanford, MI | 18 | PVGPATDIS, file of 2026-04-10 | |
| Lauren Tonge | Sanford, MI | 13 | PVGPATDIS, file of 2026-04-10 | |
| Afrooz Zarisfi | Midland, MI | 8 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C08G | Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds | C08G77/14 | PVGPATDIS, file of 2026-04-10 |
| C08K | Use of inorganic or non-macromolecular organic substances as compounding ingredients | C08K3/22 | PVGPATDIS, file of 2026-04-10 |
| C08L | Compositions of macromolecular compounds | C08L83/06 | PVGPATDIS, file of 2026-04-10 |
| C09J | Adhesives; non-mechanical aspects of adhesive processes in general; adhesive processes not provided for elsewhere; use of materials as adhesives | C09J183/06 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2018-02-28 | Name change Change of name | DOW CORNING CORPORATION signed 2018-02-01 | DOW SILICONES CORPORATION MIDLAND, MI | 45470/188 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.