US3907934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impact compositions of PVC and chlorinated polyalkenamers
Assignee: Montedison SpA
•
Filing: 1974-01-04
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Granted: 1975-09-23
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Expires: 1994-01-04
Abstract
Abstract Compositions of PVC and chlorinated polyalkenamers having a markedly improved resistance to impact of the PVC are obtained. These compositions are suitable for the extrusion of manufactured articles having high resistance to bursting, for injection molding or blowing of articles having a high clarity, good processability and impact properties.
Inventors
- 👤 Asta Gino Dall
- 👤 Pietro Meneghini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:05
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08F; C08F8/00; C08F8/18; C08F8/20; C08K; C08K5/00; C08K5/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
COMPOSITIONS OF PVC COMPRISING A. A VINYL CHLORIDE POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE HOMOPOLYMER HAVING A FIKENTSCHER K VALUE FROM 45 TO 90 AND COPOLYMERS OF VINYL CHLORIDE WITH UP TO 30% BY WEIGHT OF VINYLACETATE, VINYL MALEATE, VINYL PIVALATE OR PROPYLENE HAVING A FIKENTSCHER K VALUE FROM 45 TO 90, AND B. FROM 5 TO 30% BY WEIGHT, ON THE COMPOSITION WEIGHT OF A CHLORINATED POLYALKENAMER HAVING A CHLORINE CONTENT OF 20 TO 51% BY WEIGHT AND IN WHICH THE CHLORINE ATOMS ARE LINKED TO TWO ADJACENT CARBON ATOMS BELONGING TO UNITS HAVING THE STRUCTURE -CHCI - CHCI - (CH2)N- WHEREIN N IS A WHOLE NUMBER FROM 3 TO 10, CONTAINING A DOUBLE BOND CONTENT OF 0 TO 5 DOUBLE BONDS PER 100 CARBON-TOCARBON BONDS.
Claim 2
Dependent Claim
130 words
COMPOSITIONS OF PVC COMPRISING A. A VINYL CHLORIDE POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE HOMOPOLYMER HAVING A FIKENTSCHER K VALUE FROM 45 TO 90 AND COPOLYMERS OF VINYL CHLORIDE WITH UP TO 30% BY WEIGHT OF VINYLACETATE, VINYL MALEATE, VINYL PIVALATE OR PROPYLENE HAVING A FIKENTSCHER K VALUE FROM 45 TO 90, AND B. FROM 5 TO 30% BY WEIGHT, ON THE COMPOSITION WEIGHT OF A CHLORINATED POLYALKENAMER HAVING A CHLORINE CONTENT OF 20 TO 51% BY WEIGHT AND IN WHICH THE CHLORINE ATOMS ARE LINKED TO TWO ADJACENT CARBON ATOMS BELONGING TO UNITS HAVING THE STRUCTURE -CHCI - CHCI - (CH2)N- WHEREIN N IS A WHOLE NUMBER FROM 3 TO 10, CONTAINING A DOUBLE BOND CONTENT OF 0 TO 5 DOUBLE BONDS PER 100 CARBON-TOCARBON BONDS.
Claim 3
Dependent Claim
20 words
The compositions of claim 1, in which the polyvinylchloride is syndiotactic polyvinylchloride having a tacticity index froM 2 to 2.5.
Claim 4
Dependent Claim
10 words
The compositions of claim 1, containing conventional stabilizers and lubricants.
Claim 5
Dependent Claim
12 words
The compositions of claim 1, in which b) is a chlorinated polypentenamer.
References Cited (Backward Citations)
US3396211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |