US5071891A
Expired / Lapsed
US
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Fillers
Assignee: Syngenta Ltd
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Filing: 1990-07-05
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Granted: 1991-12-10
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Expires: 2010-07-05
Abstract
Abstract A coating composition for a particulate filler comprising an organic oligomer containing a plurality of oxy groups, less than 15% of which are comprised in hydroxy groups, organic oligomer components thereof, fillers coated with the coating compositions, organic polymer matrices filled with a dispersion of the coated filler, and processes for the preparation of the oligomer components, the coating compositions, the coated fillers and the filled matrices, and precursors of the coating compositions.
Inventors
- 👤 David L. Harrison
- 👤 Louis P. Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:59
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/08; B; B29; B29B; B29B7/00; B29B7/80; B29B7/88; B29B7/90; B29B7/905
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
60 words
A filled cohesive polymer matrix comprising an organic matrix polymer and a particulate filler which is coated at least in part with a coating composition comprising an organic oligomer containing a plurality of oxy groups, including hydroxyl groups of which at least 50% are capped so that less than 15% of the oligomer oxy groups are comprised in hydroxyl groups.
Claim 2
Dependent Claim
60 words
A filled cohesive polymer matrix comprising an organic matrix polymer and a particulate filler which is coated at least in part with a coating composition comprising an organic oligomer containing a plurality of oxy groups, including hydroxyl groups of which at least 50% are capped so that less than 15% of the oligomer oxy groups are comprised in hydroxyl groups.
Claim 3
Dependent Claim
15 words
A fluid polymer matrix according to claim 1, comprising a polysiloxane or polyurethane matrix polymer.
Claim 4
Dependent Claim
46 words
A polymer matrix according to claim 1 wherein the filler is a carbon black, an amphoteric oxide, a oxide, hydroxide or carbonate which is basic or a basic carbonate, silica or a silicate, with a mean particle size in the range of 75 to 1000 Angstrom.
Claim 5
Dependent Claim
32 words
A polymer matrix according to claim 1, wherein the filler is a particulate amphoteric, basic or siliceous inorganic filler with a mean particle size in the range of 40 to 2000 Angstrom.
Claim 6
Dependent Claim
47 words
A process for the preparation of a polymer matrix composition according to claim 2, which process comprises intimately mixing a matrix polymer or a precursor thereof with a coated filler according to claim 3, and thereafter as necessary converting the mixture to a filled polymer matrix composition.
Claim 7
Dependent Claim
24 words
A polymer matrix according to claim 1, wherein the organic oligomer is a derivative of a polyalkylene oxide or a polyalkoxylated alcohol or hydroxyarene.
Claim 8
Dependent Claim
28 words
A polymer matrix according to claim 1, wherein the oligomer is of number average molecular weight 200 to 500, and having 2 to 12 oxy groups per molecule.
Claim 9
Dependent Claim
37 words
A polymer matrix according to claim 1, wherein the oligomer is a derivative of a polyethoxylated C 10-20 fatty alcohol and contains a plurality of oxy groups, less than 15% of which are comprised in hydroxy groups.
Claim 10
Dependent Claim
41 words
A polymer matrix according to claim 1, wherein the oligomer is a polyethoxylated or propoxylated C 10-20 fatty alcohol in which the hydroxyl groups are capped so that less than 15% of the oligomer oxy groups are comprised in hydroxyl groups.
Claim 11
Dependent Claim
25 words
A polymer matrix according to claim 1, wherein the oligomer is an ethoxylated alcohol in which at least 50% of the hydroxyl groups are capped.
Claim 12
Dependent Claim
36 words
A polymer matrix according to claim 9 wherein said ethoxylated alcohol is comprised mainly of C 13 and C 15 alcohols with an average ethylene oxide chain length of 3 (C 2 H 4 O) units.
Claim 13
Dependent Claim
12 words
A polymer matrix according to claim 9 which contains a capping agent.
Claim 14
Dependent Claim
15 words
A polymer matrix according to claim 12 wherein said capping agent has a silicon-containing group.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |