Granted Patent B2

US 12,545,812 · App. 18/118,926 · Granted Feb 10, 2026

Inventors: Junkang Jacob Liu (Woodbury, MN); Pingfan Wu (Woodbury, MN); Jose Maria Benito (Madrid, ES)

Assignee: 3M Innovative Properties Company

C09J7/25C09J7/38C09J11/04H01M50/595C09J2203/33C09J2301/302C09J2301/41C09J2483/00C09J2483/006

Abstract

Claims (23)

1 . A ceramifiable composition comprising a crosslinked silicone matrix retaining stabilizing components, wherein the stabilizing components comprise subcomponents:

a) at least one of an aluminosilicate clay, aluminum oxide, or a hydrate thereof;

b) at least one of phosphorus pentoxide, a polyphosphate, an inorganic phosphate salt, boron oxide, boric acid or a salt thereof; and

c) at least one of an alkaline earth oxide, alkaline earth carbonate, or a hydrate thereof, and wherein heating the ceramifiable composition to a temperature between 600 and 1600 degrees Celsius, inclusive, results in a ceramified composition.

2 . The ceramifiable composition of claim 1 , wherein the subcomponents b) and c) melt at a temperature of 700 degrees or less.

3 . The ceramifiable composition of claim 1 , wherein the subcomponents a), b), and c) collectively comprise 30 to 90 percent of the ceramifiable composition.

4 . The ceramifiable composition of claim 1 , wherein subcomponent a) comprises from 45 to 70 weight percent of the total weight of a), b) and c).

5 . The ceramifiable composition of claim 1 , wherein subcomponent b) comprises from 5 to 40 weight percent of the total weight of subcomponents a), b) and c).

6 . The ceramifiable composition of claim 1 , wherein subcomponent c) comprises from 5 to 40 weight percent of the total weight of subcomponents a), b) and c).

7 . The ceramifiable composition of claim 1 , wherein subcomponent a) comprises halloysite.

8 . The ceramifiable composition of claim 1 , wherein subcomponent b) comprises at least one of phosphorus pentoxide, a polyphosphate, or an inorganic phosphate salt.

9 . The ceramifiable composition of claim 8 , wherein subcomponent b) comprises phosphorus pentoxide.

10 . The ceramifiable composition of claim 1 , wherein subcomponent c) comprises magnesium oxide or magnesium hydroxide.

11 . The ceramifiable composition of claim 10 , wherein subcomponent c) comprises magnesium hydroxide.

12 . The ceramifiable composition of claim 1 , further comprising at least one of hollow glass microsphere or hollow ceramic microspheres.

13 . The ceramifiable composition of claim 1 , wherein the crosslinked silicone matrix is crosslinked at least in part by exposure to electron beam or gamma radiation.

14 . The ceramifiable composition of claim 13 , wherein the crosslinked silicone matrix is crosslinked at least in part by exposure to electron beam.

15 . The ceramifiable composition of claim 1 , wherein the ceramified composition contains less than or equal to 5 weight percent of organic carbon.

16 . A ceramifiable article comprising a layer of the ceramifiable composition of claim 1 , wherein the layer has first and second opposed major surfaces.

17 . The ceramifiable article of claim 16 , further comprising at least one pressure-sensitive adhesive element disposed on at least one of the first or second major surfaces.

18 . The ceramifiable article of claim 17 , wherein the at least one pressure-sensitive adhesive element comprises a silicone-based pressure-sensitive adhesive.

19 . The ceramifiable article of claim 16 , wherein the ceramifiable composition has a percent elongation at break according to ASTM test method D882-18 (2018) of at least 30 percent.

20 . The ceramifiable article of claim 16 , wherein the ceramified composition has a compressive strength according to ASTM test method C1424-15 (2015) of at least 5 kilopascals.

Assignments (1)

Continuity (2)

References Cited (50)