US5543173A
Expired / Lapsed
US
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Surface treating aluminum trihydrate powders with prehydrolized silane
Assignee: ALMATIS Inc
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Filing: 1994-09-19
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Granted: 1996-08-06
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Expires: 2014-09-19
Abstract
Abstract A method of reducing the agglomeration of inorganic powdered material, the method comprising: (a) providing an inorganic powdered material comprising ceramic particles; (b) coating the ceramic particles with a solution containing from 0.05-0.5 wt. % of a polysiloxanol oligomer of a trialkoxysiloxane monomer having the structure Si(OR') 3 wherein R' represents a C 1 -C 4 alkoxy group selected from the group consisting of methyl, ethyl, isopropyl and n-butyl and wherein the oligomer has chains having a number average distribution with a number average degree of polymerization X n in the range above 2 but below the gel point; and (c) drying the inorganic powdered material.
Inventors
- 👤 William E. Horn, Jr.
- 👤 Willy M. Balaba
- 👤 Anthony A. Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:02
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/30; C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/62605; C04B35/62645; C04B35/62655; C04B35/628; C04B35/63; C04B35/632; C04B35/634; C04B35/63448; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3217; C04B2235/3222; C04B2235/3231; C04B2235/3232; C04B2235/3234; C04B2235/3236; C04B2235/3241; C04B2235/3244; C04B2235/3248; C04B2235/34; C04B2235/3427; C04B2235/3436; C04B2235/3445; C04B2235/3463; C04B2235/3481; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2235/60; C04B2235/608; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
101 words
A method of reducing the agglomeration of inorganic powdered materials, the method comprising: (a) providing an inorganic powdered material; (b) coating said inorganic powdered material with a solution of an polysiloxanol oligomer of a trialkoxysiloxane having the structure R".sub.4-y Si(OR').sub.y wherein R' represents a C 1 -C 4 alkyl group; R" represents an organic functional group; Y is an integer between 1 and 4, and, wherein said oligomer has chains having a number average distribution with a number average degree of polymerization X n in the range above 2 but below the gel point; and (c) drying said inorganic powdered material.
Claim 2
Independent Claim
101 words
A method of reducing the agglomeration of inorganic powdered materials, the method comprising: (a) providing an inorganic powdered material; (b) coating said inorganic powdered material with a solution of an polysiloxanol oligomer of a trialkoxysiloxane having the structure R".sub.4-y Si(OR').sub.y wherein R' represents a C 1 -C 4 alkyl group; R" represents an organic functional group; Y is an integer between 1 and 4, and, wherein said oligomer has chains having a number average distribution with a number average degree of polymerization X n in the range above 2 but below the gel point; and (c) drying said inorganic powdered material.
Claim 3
Dependent Claim
31 words
The method of claim 1 in which said chains have a number average distribution with a number average degree of polymerization X n in the range from about 3 to 10.
Claim 4
Dependent Claim
12 words
The method of claim 1 in which said oligomer is pre-hydrolyzed n-octyltriethoxysilane.
Claim 5
Dependent Claim
30 words
The method of claim 1 in which said oligomer is present in an amount in the range from about 0.05 to about 5 wt. % of said inorganic powdered material.
Claim 6
Dependent Claim
30 words
The method of claim 1 in which said oligomer is present in an amount in the range from about 0.05 to about 2 wt. % of said inorganic powdered material.
Claim 7
Dependent Claim
14 words
The method of claim 1 in which inorganic powdered material has a nonpolar surface.
Claim 8
Dependent Claim
34 words
The method of claim 1 in which inorganic powdered material is selected from the group consisting of aluminum hydrate, hydrotalcite, basic aluminum oxalate, dawsonite, sodium carbonate, magnesium carbonate and combinations and partial hydrates thereof.
Claim 9
Dependent Claim
21 words
The method of claim 1 in which said drying is performed at a temperature between about 40° C. and 200° C.
Claim 10
Dependent Claim
20 words
The method of claim 1 in which said drying is performed with agitation at a temperature greater than ambient temperature.
Claim 11
Dependent Claim
19 words
The method of claim 1 in which said drying is performed at a temperature greater than about 100° C.
Claim 12
Dependent Claim
27 words
The method of claim 1 in which said coating of inorganic powdered material is performed by: adding said oligomer to said inorganic powdered material and dry mixing.
Claim 13
Dependent Claim
42 words
The method of claim 1 in which said coating of inorganic powdered material is performed by: determining the amount needed to provide a monolayer coverage of the inorganic powdered material; and adding said oligomer to said inorganic powdered material and dry mixing.
Claim 14
Dependent Claim
28 words
The method of claim 1 in which (a) includes providing an inorganic powdered material having at least 50 wt. % of its particles less than about 10 μm.
Claim 15
Dependent Claim
77 words
The method of claim 1 which further includes: (d) incorporating said dried inorganic powdered material into a polymer selected from the group consisting of poly(2-methylpentene), poly(ethylene), poly(propylene), poly(butene-1), poly(isobutylene), polyvinyl chloride, polyvinylidene chloride, chlorinated polyethylene; polymers of butadiene, acrylonitrile, carboxylated butadiene rubbers, natural rubber, polystyrene, low density polyethylene, ethylene-propylene(diene monomer) rubbers; styrene polymers, acrylic acid or its esters, methacrylic acid or its esters, amide polymers; polyesters, polycarbonates, polyphenylene sulfides, polyether ketones, polyether ether ketones, and combinations thereof.
Claim 16
Dependent Claim
35 words
The method of claim 1 which further includes: (d) incorporating said dried inorganic powdered material into a polymer vehicle to form a polymer blend; and (e) forming said polymer blend into a formed plastic product.
Claim 17
Dependent Claim
27 words
The method of claim 1 in which R' represents a C 1 -C 4 alkyl group selected from the group consisting of methyl, ethyl, isopropyl and n-butyl.
Claim 18
Independent Claim
121 words
A method of reducing the agglomeration of inorganic powdered material, the method comprising: (a) providing an inorganic powdered material; (b) coating said inorganic powdered material with a polysiloxanol oligomer of a trialkoxysiloxane monomer having the structure R".sub.4-y Si(OR').sub.y wherein R' represents a C 1 -C 4 alkyl group selected from the group consisting of methyl, ethyl, isopropyl and n-butyl; R" represents an organic functional group; Y is an integer between 1 and 4; and, wherein said oligomer has chains having a number average distribution with a number average degree of polymerization X n in the range above 2 but below the gel point; (c) drying said inorganic powdered material; and (d) incorporating said dried inorganic powdered material into a polymer blend.
Claim 19
Independent Claim
121 words
A method of reducing the agglomeration of inorganic powdered material, the method comprising: (a) providing an inorganic powdered material; (b) coating said inorganic powdered material with a polysiloxanol oligomer of a trialkoxysiloxane monomer having the structure R".sub.4-y Si(OR').sub.y wherein R' represents a C 1 -C 4 alkyl group selected from the group consisting of methyl, ethyl, isopropyl and n-butyl; R" represents an organic functional group; Y is an integer between 1 and 4; and, wherein said oligomer has chains having a number average distribution with a number average degree of polymerization X n in the range above 2 but below the gel point; (c) drying said inorganic powdered material; and (d) incorporating said dried inorganic powdered material into a polymer blend.
Claim 20
Dependent Claim
16 words
The method of claim 1 in which said Y is an integer between 1 and 3.
Claim 21
Dependent Claim
16 words
The method of claim 17 in which said Y is an integer between 1 and 3.
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