Patent US2338796A successfully refreshed from Google Patents.
Patent US5367030A successfully refreshed from Google Patents.
US5367030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for crosslinking thermoplastic silane polymers
Assignee: Union Carbide Chemicals and Plastics Technology LLC
•
Filing: 1994-02-14
•
Granted: 1994-11-22
•
Expires: 2014-02-14
Abstract
Abstract A process for crosslinking a thermoplastic ethylene silane copolymer which comprises forming the ethylene silane copolymer in a thermoforming operation into a shaped article and thereafter subjecting the thermoplastic ethylene silane copolymer shaped article to a solution of benzoic acid in an mount and for a time sufficient to crosslink the thermoplastic ethylene silane copolymer.
Inventors
- 👤 Yimsan Gau
- 👤 Michael J. Keogh
- 👤 James R. Leech
- 👤 Hugh E. McGee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:40
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
69 words
A process for crosslinking a thermoplastic ethylene silane copolymer which comprises forming said ethylene silane copolymer in a processing zone into a shaped article in the absence of a catalyst, removing said shaped article from said processing zone and thereafter subjecting said thermoplastic ethylene silane copolymer shaped article to a solution of benzoic acid in an amount and for a time sufficient to crosslink said thermoplastic ethylene silane copolymer.
Claim 2
Dependent Claim
69 words
A process for crosslinking a thermoplastic ethylene silane copolymer which comprises forming said ethylene silane copolymer in a processing zone into a shaped article in the absence of a catalyst, removing said shaped article from said processing zone and thereafter subjecting said thermoplastic ethylene silane copolymer shaped article to a solution of benzoic acid in an amount and for a time sufficient to crosslink said thermoplastic ethylene silane copolymer.
Claim 3
Dependent Claim
23 words
The process defined in claim 1 wherein the copolymer contains one or more alpha-olefin comonomers and one or more alkenyl alkoxy silane comonomers.
Claim 4
Dependent Claim
15 words
The process defined in claim 2 wherein the copolymer is an ethylene/vinyl trimethoxy silane copolymer.
Claim 5
Dependent Claim
25 words
The process defined in claim 1 wherein the copolymer is a silane grafted homopolymer or copolymer or a copolymer of an olefin and a silane.
Claim 6
Dependent Claim
30 words
A process according to claim 1 wherein said benzoic acid is employed in an amount of about 0.2% to about 3% by weight based on the weight of the solution.
Claim 7
Dependent Claim
30 words
A process according to claim 1 wherein said benzoic acid is employed in an amount of about 2.5% to about 2.8% by weight based on the weight of the solution.
Claim 8
Dependent Claim
18 words
A process according to claim 1 wherein said shaped article is submerged in said solution of benzoic acid.
Claim 9
Dependent Claim
18 words
A process according to claim 1 wherein said shaped article is sprayed with said solution of benzoic acid.
Claim 10
Dependent Claim
17 words
A process according to claim 1 wherein said shaped article is circulated through said benzoic acid solution.
Claim 11
Dependent Claim
14 words
A process according to claim 1 wherein said thermoforming operation is an extrusion operation.
Claim 12
Dependent Claim
14 words
A process according to claim 1 wherein said thermoforming operation is a molding operation.
Claim 13
Dependent Claim
19 words
A process according to claim I wherein said thermoplastic ethylene silane copolymer contains a mineral filler or carbon black.
References Cited (Backward Citations)
US4680319A
Cited
US5047476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |