Patent US3875110A successfully refreshed from Google Patents.
US3875110A
Expired / Lapsed
US
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Stabilizers for chlorine-containing polymers
Assignee: Dynamit Nobel AG
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Filing: 1970-03-11
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Granted: 1975-04-01
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Expires: 1990-03-11
Abstract
Abstract WHEREIN Z is silicon or tin; n is 0 to 3, and R'' is substantially any organic radical. The two R'' can be the same or different. Some specific compounds include di-n-butyl-di(benzotriazo-phenoxy-2)-tin; and dimethyl-di-(benzotriazo phenoxy-2-)-silane. These novel compounds can be made by the reaction of benzotriazo phenols with various reactive silane or tin compounds, e.g., halides, etc. The polymers which can be stabilized include polyvinyl chlorides, polyvinylidene chlorides, poly-chloroprenes, chlorinated styrene polymers, chlorinated acrylic polymers, etc. This specification discloses a novel class of light and heat stabilizers particularly useful with chlorinated polymers. These new compounds have the general formula:
Inventors
- 👤 Mohamed Roshdy Ismail
- 👤 Hans Raalf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/54; C08K5/544; C08K5/5477; C08K5/56; C08K5/57
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
45 words
COMPOSITION COMPRISING AT LEAST ONE CHLORINE-CONTAINING POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE POLYMERS, VINYLIDENE CHLORIDE POLYMERS, TRICHLOROETHYLENE POLYMERS, CHLOROPRENE POLYMERS, TRIFLUOROMONOCHLOROETHYLENE POLYMERS, CHLORINATED STYRENE POLYMERS, AND CHLORINATED ACRYLIC POLYMERS ADMIXED WITH A STABILIZING AMOUNT OF AT LEAST ONE COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
45 words
COMPOSITION COMPRISING AT LEAST ONE CHLORINE-CONTAINING POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE POLYMERS, VINYLIDENE CHLORIDE POLYMERS, TRICHLOROETHYLENE POLYMERS, CHLOROPRENE POLYMERS, TRIFLUOROMONOCHLOROETHYLENE POLYMERS, CHLORINATED STYRENE POLYMERS, AND CHLORINATED ACRYLIC POLYMERS ADMIXED WITH A STABILIZING AMOUNT OF AT LEAST ONE COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
15 words
Composition as claimed in claim 1, containing about 0.05-5 weight per cent of said compound.
Claim 4
Dependent Claim
15 words
Composition as claimed in claim 1, containing about 0.1-1 weight per cent of said compound.
Claim 5
Dependent Claim
12 words
A composition as claimed in claim 1 wherein said compound is di-n-butyl-di-(benzotriazolephenoxy-2)-silane.
Claim 6
Dependent Claim
14 words
A composition as claimed in claim 1 wherein said compound is dimethyl-di-(benzo triazole phenoxy-2)-silane.
Claim 7
Dependent Claim
45 words
COMPOSITION COMPRISING AT LEAST ONE CHLORINE-CONTAINING POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE POLYMERS, VINYLIDENE CHLORIDE POLYMERS, TRICHLOROETHYLENE POLYMERS, CHLOROPRENE POLYMERS TRIFLUOROMONOCHLOROETHYLENE POLYMERS, CHLORINATED STYRENE POLYMERS, AND CHLORONATED ACRYLIC POLYMERS ADMIXED WITH A STABILIZING AMOUNT OF AT LEAST ONE COMPOUND OF THE FORMULA:
Claim 8
Dependent Claim
45 words
COMPOSITION COMPRISING AT LEAST ONE CHLORINE-CONTAINING POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE POLYMERS, VINYLIDENE CHLORIDE POLYMERS, TRICHLOROETHYLENE POLYMERS, CHLOROPRENE POLYMERS TRIFLUOROMONOCHLOROETHYLENE POLYMERS, CHLORINATED STYRENE POLYMERS, AND CHLORONATED ACRYLIC POLYMERS ADMIXED WITH A STABILIZING AMOUNT OF AT LEAST ONE COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US3208966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |