Patent US4394469A successfully refreshed from Google Patents.
US4394469A
Expired / Lapsed
US
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Polysiloxane treated antimony compounds
Assignee: OSI Specialties Inc
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Filing: 1982-03-29
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Granted: 1983-07-19
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Expires: 2002-03-29
Abstract
Abstract An inorganic antimony compound that is surface modified with up to about 10 percent by weight of a polysiloxane results in a flame retardant with improved rheology, flow, storage and dispersing characteristics.
Inventors
- 👤 Julius J. Stratta
- 👤 Lloyd M. Robeson
- 👤 Richard V. Girardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:36
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C01; C01B; C01B13/00; C01B13/14; C01B13/145; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C08K9/00; C08K9/04; C08K9/06; C09; C09C; C09C1/00; C09C1/0096; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/64
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
59 words
An inorganic antimony compound surface modified with up to about 10 percent by weight of a polysiloxane having the formula: ##STR3## wherein R, R' and R" are individually alkyl, alkenyl, aryl, alkylaryl, alkoxy, ether, ester, carboxyl, or amino groups having from 1 to 18 carbon atoms, and a+b equals from 2 to 1,000 provided a/b is greater than 0.5.
Claim 2
Dependent Claim
59 words
An inorganic antimony compound surface modified with up to about 10 percent by weight of a polysiloxane having the formula: ##STR3## wherein R, R' and R" are individually alkyl, alkenyl, aryl, alkylaryl, alkoxy, ether, ester, carboxyl, or amino groups having from 1 to 18 carbon atoms, and a+b equals from 2 to 1,000 provided a/b is greater than 0.5.
Claim 3
Dependent Claim
17 words
The compound of claim 1 wherein R, R' and R" individually contain 1 to 10 carbon atoms.
Claim 4
Dependent Claim
14 words
The compound of claim 2 wherein R, R' and R" are all methyl groups.
Claim 5
Dependent Claim
12 words
The compound of claim 1 wherein a+b equals 10 to 100 inclusive.
Claim 6
Dependent Claim
9 words
The compound of claim 4 wherein b is zero.
Claim 7
Dependent Claim
12 words
The compound of claim 1 wherein the polysiloxane is methyl hydrogen polysiloxane.
Claim 8
Dependent Claim
13 words
The compound of claim 1 wherein the inorganic antimony compound is antimony oxide.
Claim 9
Dependent Claim
12 words
The compound of claim 7 wherein the antimony oxide is antimony trioxide.
Claim 10
Dependent Claim
11 words
The compound of claim 1 wherein antimony compound is antimony sulfide.
Claim 11
Dependent Claim
20 words
The compound of claim 8 wherein R is methyl, b is zero and a is from 10 and 100 inclusive.
Claim 12
Dependent Claim
22 words
The compound of claim 8 wherein the inorganic antimony trioxide is surface modified with a trimethyl end blocked polymer of dichloromethyl siloxane.
Claim 13
Dependent Claim
31 words
A method for improving the flame-retardant properties of organic resins and elastomers which comprises incorporating into the resin or elastomer an effective amount of the surface-modified antimony compound of claim 1.
Claim 14
Dependent Claim
22 words
The process of claim 12 wherein the surface-modified antimony compound comprises up to about 15% by weight of the resin of elastomer.
Claim 15
Dependent Claim
22 words
An organic resin or elastomer which contains up to about 15% by weight of the surface-modified inorganic antimony compound of claim 1.
Claim 16
Dependent Claim
23 words
A product comprised of polyarylate or poly(arylate-carbonate) and 0.001 wt. % to about 1 wt. % of the polysiloxane described in claim 1.
Claim 17
Dependent Claim
12 words
A product described in claim 15 wherein an additional polyester is added.
Claim 18
Dependent Claim
12 words
A product described in claim 16 wherein the polyester is poly(ethylene terephthalate).
Claim 19
Dependent Claim
22 words
A product described in claim 15 wherein a metal oxide is added up to 15 wt. % of the polyarylate or poly(arylate-carbonate).
References Cited (Backward Citations)
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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) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |