US3816169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous and non-fibrous substrates coated with microcapsular pacifier system and the production of such coated substrates
Assignee: Champion International Corp
•
Filing: 1972-04-20
•
Granted: 1974-06-11
•
Expires: 1992-04-20
Abstract
Abstract Fibrous and non-fibrous substrates are rendered highly opaque by providing the substrate with a coating of discrete, substantially spherical, air-containing microcapsules having substantially continuous organic, polymeric, solid walls, an average particle diameter of below about 2 microns and having pigment particles incorporated in the microcapsular structure.
Inventors
- 👤 S Shroff
- 👤 A Vassiliades
- 👤 E Nauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:48
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/50; D21H21/52; D21H21/54; B; B01; B01J; B01J13/00; B01J13/02; B01J13/20; B01J13/203; C; C09; C09D; C09D7/00; C09D7/40; C09D7/42; D06; D06M; D06M23/00; D06M23/12; D21H19/00; D21H19/36; D21H19/38; D21H19/385; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249972; Y10T428/25; Y10T428/256; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987; Y10T428/2989
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
19 words
The method of claim 1 wherein said microcapsules have an average particle diameter between about 0.1 and 1.0 micron.
Claim 2
Dependent Claim
10 words
The method of claim 1 wherein said pigment is TiO2.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein said fibrous substrate is heated to a temperature between about 80* and about 100*C.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein said pigment particles protrude through said capsule walls.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein said fibrous substrate is paper.
Claim 6
Independent Claim
59 words
A method for the production of a highly opaque fibrous substrate which comprises providing a dispersion of discrete, substantially spherical, air-containing microcapsules having substantially continuous organic, polymeric, solid walls, said microcapsules having an average particle diameter of below about 2 microns and having pigment particles incorporated in the microcapsule structure, and coating said microcapsular dispersion onto a fibrous substrate.
Claim 7
Dependent Claim
20 words
The method of claim 7 wherein said microcapsules have an average particle diameter of between 0.10 and about 1.0 micron.
Claim 8
Dependent Claim
21 words
The method of claim 8 wherein said microcapsules have an average particle diameter of between about 0.25 and about 0.8 micron.
Claim 9
Dependent Claim
10 words
The method of claim 7 wherein said pigment is TiO2.
Claim 10
Dependent Claim
14 words
The method of claim 7 wherein said pigment particles protrude through said capsule walls.
Claim 11
Dependent Claim
11 words
The method of claim 7 wherein said fibrous substrate is paper.
Claim 12
Independent Claim
88 words
A method for producing a highly opaque, non-fibrous substrate, which comprises providing a dispersion of discrete, substantially spherical, microcapsules having substantially continuous organic, polymeric solid walls, said microcapsules having an average particle diameter of below about 2 microns and containing a gasifiable core material, said microcapsules additionally having pigment particles incorporated in the microcapsular structure, coating said microcapsular dispersion onto nonfibrous substrate, and heating said substrate to a temperature sufficient to substantially completely drive off said core material from said microcapsules, and replace said core material with air.
Claim 13
Dependent Claim
20 words
The method of claim 13 wherein said microcapsules have an average particle diameter between about 0.1 and about 1.0 micron.
Claim 14
Dependent Claim
10 words
The method of claim 13 wherein said pigment is TiO2.
Claim 15
Dependent Claim
14 words
The method of claim 13 wherein said pigment particles protrude through said capsule walls.
Claim 16
Dependent Claim
18 words
The method of claim 13 wherein said pigment particles are completely encapsulated within the walls of said microcapsules.
Claim 17
Independent Claim
59 words
A method for the production of a highly opaque non-fibrous substrate which comprises providing a dispersion of discrete, substantially spherical, air-conditioning microcapsules having substaNtially continuous organic, polymeric, solid walls, said microcapsules having an average particle diameter of below about 2 microns and having pigment particles incorporated in the microcapsular structure, and coating said microcapsular dispersion onto a fibrous substrate.
Claim 18
Dependent Claim
21 words
The method of claim 18 wherein said microcapsules have an average particle diameter in the range of 0.1 to 1 micron.
Claim 19
Dependent Claim
10 words
The method of claim 18 wherein said pigment is TiO2.
Claim 20
Dependent Claim
14 words
The method of claim 18 wherein said pigment particles protrude through said capsule walls.
Claim 21
Dependent Claim
18 words
The method of claim 18 wherein said pigment particles are completely encapsulated within the walls of the microcapsules.
Claim 22
Dependent Claim
42 words
A non-fibrous substrate having a coating of discrete, substantially spherical, air-containing microcapsules, said microcapsule having substantially continuous organic, polymeric, solid walls and an average particle diameter of below about 2 microns, said microcapsules additionally having pigment particles incorporated in the microcapsular structure.
Claim 23
Dependent Claim
22 words
The non-fibrous substrate of claim 23 wherein said microcapsules have an average particle diameter of between about 0.10 and about 1.0 microns.
Claim 24
Dependent Claim
11 words
The non-fibrous substrate of claim 24 wherein said pigment is TiO2.
Claim 25
Dependent Claim
44 words
An article which comprises a fibrous substrate having a coating of discrete, substantially spherical, air-containing microcapsules having substantially continuous, organic, polymeric, solid walls and an average particle diameter of below about 2 microns, said microcapsules additionally having pigment particles incorporated in the microcapsular structure.
Claim 26
Dependent Claim
20 words
The article of claim 26 wherein said microcapsules have an average particle diameter between about 0.10 and about 1.0 micron.
Claim 27
Dependent Claim
11 words
The article of claim 27 wherein said pigment particles comprise TiO2.
Claim 28
Dependent Claim
10 words
The article of claim 26 wherein said substrate is paper.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |