Pressure sensitive adhesive

Patent metadata

Field	Value
Publication number	US-2023193095-A1
Application number	US-202218066442-A
Country	US
Kind code	A1
Filing date	Dec 15, 2022
Priority date	Dec 16, 2021
Publication date	Jun 22, 2023
Grant date	—

Abstract

The present disclosure relates to a pressure sensitive adhesive may include a silicone based pressure sensitive adhesive component, and an iron oxide filler mixture. The content of the iron oxide filler mixture may be at least about 0.5 wt. % and not greater than about 10.0 wt. % for a total weight of the pressure sensitive adhesive. The pressure sensitive adhesive may have a peel adhesion of at least about 600 g/in when measured at 25° C., and the pressure sensitive adhesive may further have a UL 94 rating of VTM-0, a UL 94 rating of V-0, or a UL 94 rating of both VTM-0 and V-0 when attached to a backing material.

First claim

What is claimed is:

1 . A pressure sensitive adhesive comprising:
a silicone based pressure sensitive adhesive component, and an iron oxide filler mixture component at a content of at least about 0.5 wt. % and not greater than about 10.0 wt. % for a total weight of the pressure sensitive adhesive, wherein the pressure sensitive adhesive has a peel adhesion of at least about 600 g/in when measured at 25° C., and wherein the pressure sensitive adhesive has a UL 94 rating of VTM-0, a UL 94 rating of V-0, or a UL 94 rating of both VTM-0 and V-0 when attached to a backing material.

2 . The pressure sensitive adhesive of claim 1 , wherein the iron oxide filler mixture component comprises black iron oxide, silicone resin/fluid, with or without organic solvent, or any combinations thereof.

3 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive comprises an iron oxide filler content of at least about 0.6 wt. % for a total weight of the pressure sensitive adhesive.

4 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive comprises an iron oxide filler mixture component content of not greater than about 10 wt. % for a total weight of the pressure sensitive adhesive.

5 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive comprises black iron oxide.

6 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive comprises silicone adhesive.

7 . The pressure sensitive adhesive of claim 6 , wherein the silicone adhesive comprises a methyl silicone adhesive, a phenyl silicone adhesive, a vinyl silicone adhesive, or any combination thereof.

8 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive comprises a catalyst.

9 . The pressure sensitive adhesive of claim 8 , wherein the catalyst comprises peroxide, or platinum.

10 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive comprises a silicone resin.

11 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive comprises an organic solvent.

12 . The pressure sensitive adhesive of claim 11 , wherein the organic solvent comprises toluene, xylene, ethyl acetate.

13 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive has a peel adhesion of at least about 610 g/in as measured at 25° C.

14 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive has a peel adhesion of at least about 280 g/in as measured at 100° C.

15 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive has a peel adhesion of at least about 50 g/in as measured at 250° C.

16 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive has a Tack of at least about 4.2 N.

17 . The pressure sensitive adhesive of claim 1 , wherein the pressure sensitive adhesive has a UL 94 rating of V-0.

18 . A tape comprising a backing layer and a layer of pressure sensitive adhesive, wherein the pressure sensitive adhesive comprises:
a silicone based pressure sensitive adhesive component, and an iron oxide filler at a content of at least about 0.5 wt. % and not greater than about 10.0 wt. % for a total weight of the pressure sensitive adhesive, wherein the pressure sensitive adhesive has a peel adhesion of at least about 600 g/in when measured at 25° C., and wherein the pressure sensitive adhesive has a UL 94 rating of VTM-0, a UL 94 rating of V-0, or a UL 94 rating of both VTM-0 and V-0 when attached to a backing material.

19 . The tape of claim 18 , wherein the iron oxide filler mixture component comprises black iron oxide, silicone resin/fluid, with or without organic solvent, or any combinations thereof.

20 . A method of forming a pressure sensitive adhesive, wherein the method comprises:
providing a forming mixture of a silicone based pressure sensitive adhesive precursor component and an iron oxide filler precursor mixture component, and forming the forming mixture into a pressure sensitive adhesive, wherein the pressure sensitive adhesive comprises:
a silicone based pressure sensitive adhesive component, and
an iron oxide filler mixture at a content of at least about 0.5 wt. % and not greater than about 3.0 wt. % for a total weight of the pressure sensitive adhesive,
wherein the pressure sensitive adhesive has a peel adhesion of at least about 600 g/in when measured at 25° C., and
wherein the pressure sensitive adhesive has a UL 94 rating of VTM-0, a UL 94 rating of V-0, or a UL 94 rating of both VTM-0 and V-0 when attached to a backing material.

Assignees

• Saint Gobain Performance Plastics Corp

Inventors

• Amato Dahlia
• Elliott Gerald A
• Peet Jeffrey H
• Brown Rachel
• Wang Fei

Classifications

• C09J183/04 Primary

  Polysiloxanes · CPC title

• C09J2203/354

  for automotive applications · CPC title

• C09J2483/00

  Presence of polysiloxane · CPC title

• C09J11/04

  inorganic · CPC title

• C08K5/14

  Peroxides · CPC title