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US4690959A
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Polyethylene composite comprising a coupling agent composition comprising fumaric acid and an aminosilane
Assignee: Dow Silicones Corp
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Filing: 1986-05-09
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Granted: 1987-09-01
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Expires: 2006-05-09
Abstract
Abstract Compositions which are particularly useful as coupling agents and primers for polyolefin composites. The compositions comprise fumaric acid and diaminefunctional silanes in mole ratios from 1.0 to 1.4 in nonreactive solvent, particularly water. These compositions are particularly effective in polyethylene composite materials.
Inventors
- 👤 Edwin P. Plueddemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/092; C08K5/54; C08K5/544; C08K9/00; C08K9/04; C08K9/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
119 words
A method for making composite materials of polyethylene comprising the steps of; (I) intermixing filler, polyethylene, and a coupling agent composition comprised of (A) a diamine functional silane of the general formula (RO).sub.3 SiR'NH(CH.sub.2).sub.2 NHR" where R denotes an alkyl radical with 1 to 6 carbon atoms or an alkoxyalkyl radical with 2 to 8 carbon atoms, R' denotes an alkylene radical with 1 to 4 carbon atoms, R" denotes a hydrogen atom, an alkyl radical with 1 to 6 carbons, or an alkenylarylalkyl radical with 8 to 10 carbon atoms. (B) fumaric acid; and (C) a nonreactive solvent where the mole ratio of the fumaric acid (B) to the diamine functional silane (A) is between 1.0 and 1.4.
Claim 2
Independent Claim
119 words
A method for making composite materials of polyethylene comprising the steps of; (I) intermixing filler, polyethylene, and a coupling agent composition comprised of (A) a diamine functional silane of the general formula (RO).sub.3 SiR'NH(CH.sub.2).sub.2 NHR" where R denotes an alkyl radical with 1 to 6 carbon atoms or an alkoxyalkyl radical with 2 to 8 carbon atoms, R' denotes an alkylene radical with 1 to 4 carbon atoms, R" denotes a hydrogen atom, an alkyl radical with 1 to 6 carbons, or an alkenylarylalkyl radical with 8 to 10 carbon atoms. (B) fumaric acid; and (C) a nonreactive solvent where the mole ratio of the fumaric acid (B) to the diamine functional silane (A) is between 1.0 and 1.4.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein said filler is intermixed with said coupling agent composition, and dried to form treated filler, and said treated filler is then intermixed with polyethylene.
Claim 4
Dependent Claim
23 words
The method for making polyethylene composite materials of claim 1 wherein the diamine functional silane used in the coupling agent composition is N-(2-aminoethyl)-3-aminopropyltrimethoxysilane.
Claim 5
Dependent Claim
23 words
The method for making polyethylene composite materials of claim 1 wherein the diamine functional silane used in the coupling agent composition is N-(2-aminoethyl)-2-methyl-3-aminopropyltrimethoxysilane.
Claim 6
Dependent Claim
24 words
The method for making polyethylene composite materials of claim 1 wherein the diamine functional silane used in the coupling agent composition is 3-[2(vinyl benzylamino)ethylamino]propyltrimethoxysilane.
Claim 7
Dependent Claim
28 words
The method for making polyethylene composite materials of claim 3 wherein the molar ratio of fumaric acid (B) to diamine functional silane (A) is between 1.25 and 1.35.
Claim 8
Dependent Claim
22 words
The method for making polyethylene composite materials of claim 6 wherein the nonreactive solvent used in the coupling agent composition is water.
Claim 9
Dependent Claim
108 words
A composite material comprising: polyolefin; filler; and a coupling agent mixture comprising; (A) a diamine functional silane of the general formula (RO).sub.3 SiR'NH(CH.sub.2).sub.2 NHR" where R denotes an alkyl radical with 1 to 6 carbon atoms, or an alkoxyalkyl radical with 2 to 8 carbon atoms, R' denotes an alkylene radical with 1 to 4 carbon atoms, R" denotes a hydrogen atom, an alkyl radical with 1 to 6 carbons, or an alkenylarylalkyl radical with 8 to 10 carbon atoms. (B) fumaric acid; and (C) a nonreactive solvent where the mole ratio of the fumaric acid (B) to the diamine functional silane (A) is between 1.0 and 1.4.
Claim 10
Dependent Claim
108 words
A composite material comprising: polyolefin; filler; and a coupling agent mixture comprising; (A) a diamine functional silane of the general formula (RO).sub.3 SiR'NH(CH.sub.2).sub.2 NHR" where R denotes an alkyl radical with 1 to 6 carbon atoms, or an alkoxyalkyl radical with 2 to 8 carbon atoms, R' denotes an alkylene radical with 1 to 4 carbon atoms, R" denotes a hydrogen atom, an alkyl radical with 1 to 6 carbons, or an alkenylarylalkyl radical with 8 to 10 carbon atoms. (B) fumaric acid; and (C) a nonreactive solvent where the mole ratio of the fumaric acid (B) to the diamine functional silane (A) is between 1.0 and 1.4.
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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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |