US4616049A
Expired / Lapsed
US
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Surface-modified antimony oxide particles
Assignee: PPG Industries Inc
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Filing: 1985-04-24
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Granted: 1986-10-07
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Expires: 2005-04-24
Abstract
Abstract Fire retardant compositions comprising organic polymer, organic fire retardant compound and particles of antimony oxide surface-modified with poly(dialkylsiloxane) or condensation residue thereof, often exhibit enhanced physical properties as compared with similar compositions employing untreated antimony oxide particles.
Inventors
- 👤 Ralph B. Thompson
- 👤 Kenneth J. Sienkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:47
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; C08K9/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
77 words
Particles of antimony oxide surface-modified with poly(dialkylsiloxane) or condensation residue thereof, wherein said poly(dialkylsiloxane) is represented by the formula ##STR6## in which (a) each R 1 and each R 2 are alkyl groups, (b) the average value of i is in the range of from 0 to 2, and (c) the average value of n is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 700 to about 5000.
Claim 2
Dependent Claim
77 words
Particles of antimony oxide surface-modified with poly(dialkylsiloxane) or condensation residue thereof, wherein said poly(dialkylsiloxane) is represented by the formula ##STR6## in which (a) each R 1 and each R 2 are alkyl groups, (b) the average value of i is in the range of from 0 to 2, and (c) the average value of n is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 700 to about 5000.
Claim 3
Dependent Claim
16 words
The particles of claim 1 wherein said particles of antimony oxide are particles of antimony trioxide.
Claim 4
Dependent Claim
22 words
The particles of claim 1 wherein the equivalent spherical diameters of said particles of antimony oxide are less than about 11 micrometers.
Claim 5
Dependent Claim
29 words
The particles of claim 1 wherein the equivalent spherical diameters of said particles of antimony oxide are essentially in the range of from about 0.1 to about 10 micrometers.
Claim 6
Dependent Claim
75 words
The particles of claim 1 wherein said poly(dialkylsiloxane) is represented by the formula ##STR7## in which (a) the average value of x is in the range of from 0 to 2, (b) the average value of y is in the range of from 0 to 1, and (c) the average value of m is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 700 to about 5000.
Claim 7
Dependent Claim
20 words
The particles of claim 5 wherein the average value of x is in the range of from 0 to 1.
Claim 8
Dependent Claim
13 words
The particles of claim 6 wherein the average value of y is zero.
Claim 9
Dependent Claim
33 words
The particles of claim 7 wherein the average value of m is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 1500 to about 2000.
Claim 10
Dependent Claim
32 words
The particles of claim 8 wherein said particles of antimony oxide are particles of antimony trioxide having equivalent spherical diameters essentially in the range of from about 0.1 to about 10 micrometers.
Claim 11
Dependent Claim
13 words
The particles of claim 5 wherein the average value of x is zero.
Claim 12
Dependent Claim
13 words
The particles of claim 10 wherein the average value of y is zero.
Claim 13
Dependent Claim
33 words
The particles of claim 11 wherein the average value of m is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 1500 to about 2000.
Claim 14
Dependent Claim
32 words
The particles of claim 12 wherein said particles of antimony oxide are particles of antimony trioxide having equivalent spherical diameters essentially in the range of from about 0.1 to about 10 micrometer.
Claim 15
Dependent Claim
87 words
A composition comprising organic polymer, organic fire retardant compound, and particles of antimony oxide surface-modified with poly(dialkylsiloxane) or condensation residue thereof, wherein said poly(dialkylsiloxane) is represented by the formula ##STR8## in which (a) each R 1 and each R 2 are alkyl groups. (b) the average value of i is in the range of from 0 to 2, and (c) the average value of n is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 700 to about 5000.
Claim 16
Dependent Claim
87 words
A composition comprising organic polymer, organic fire retardant compound, and particles of antimony oxide surface-modified with poly(dialkylsiloxane) or condensation residue thereof, wherein said poly(dialkylsiloxane) is represented by the formula ##STR8## in which (a) each R 1 and each R 2 are alkyl groups. (b) the average value of i is in the range of from 0 to 2, and (c) the average value of n is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 700 to about 5000.
Claim 17
Dependent Claim
16 words
The composition of claim 14 wherein said particles of antimony oxide are particles of antimony trioxide.
Claim 18
Dependent Claim
17 words
The composition of claim 14 wherein said organic fire retardant compound is halogen-containing organic fire retardant compound.
Claim 19
Dependent Claim
17 words
The composition of claim 14 wherein said organic fire retardant compound is chlorine-containing organic fire retardant compound.
Claim 20
Dependent Claim
17 words
The composition of claim 14 wherein said organic fire retardant compound is bromine-containing organic fire retardant compound.
Claim 21
Dependent Claim
54 words
The composition of claim 14 wherein the weight ratio of said organic fire retardant compound to said organic polymer is in the range of from about 1:100 to about 40:100 and wherein the weight ratio of said surface-modified particles to said organic polymer is in the range of from about 0.5:100 to about 30:100.
Claim 22
Dependent Claim
75 words
The composition of claim 14 wherein said poly(dialkylsiloxane) is represented by the formula ##STR9## in which (a) the average value of x is in the range of from 0 to 2, (b) the average value of y is in the range of from 0 to 1, and (c) the average value of m is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 700 to about 5000.
Claim 23
Dependent Claim
13 words
The composition of claim 20 wherein the average value of y is zero.
Claim 24
Dependent Claim
13 words
The composition of claim 21 wherein said organic polymer is acrylonitrile-butadiene-styrene graft copolymer.
Claim 25
Dependent Claim
12 words
The composition of claim 21 wherein said organic polymer is poly(ethylene terephthalate).
Claim 26
Dependent Claim
122 words
The composition of claim 21 wherein (a) said organic fire retardant compound is bromine-containing organic fire retardant compound, (b) said particles of antimony oxide are particles of antimony trioxide having equivalent spherical diameters essentially in the range of from about 0.1 to about 10 micrometers, (c) the average value of m is such that the number average molecular weight of said poly(dialkylsiloxane) is in the range of from about 1500 to about 2000, (d) the weight ratio of said organic fire retardant compound to said organic polymer is in the range of from about 1:100 to about 40:100, and (e) the weight ratio of said surface-modified particles to said organic polymer is in the range of from about 0.5:100 to about 30:100.
Claim 27
Dependent Claim
13 words
The composition of claim 24 wherein the average value of x is zero.
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) | 1989-10-06 | 1990-04-07 | 1990-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-06 | 1994-04-07 | 1994-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-06 | 1998-04-07 | 1998-10-07 | $7700.00 | Window Closed / Lapsed |