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US5164432A
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Moulding compositions comprising polyolefins and cellulose fibres, process for their manufacture and objects wrought from these compositions
Assignee: Solvay SA
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Filing: 1990-05-31
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Granted: 1992-11-17
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Expires: 2010-05-31
Abstract
Abstract Moulding compositions comprising a polyolefin, cellulose fibres and an unsaturated organosilane exhibiting a tensile elasticity modulus (E), measured at 100° C., higher than 1250 MPa and a ratio G'/G" of their modulus G', representing their elastic response, to their loss modulus G", measured at 200° C. and at a frequency of 0.1 rad/s (0.1 s -1 ), with a value of at least 0.80.
Inventors
- 👤 Claude Dehennau
- 👤 Paul Dubois
- 👤 Edmond Mulkens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:10
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5425; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
26 words
Moulding compositions comprising a polyolefin, cellulose fibres and an unsaturated organosilane, characterized by a tensile elasticity modulus (E), measured at 100° C., higher than 1250 MPa.
Claim 2
Dependent Claim
26 words
Moulding compositions comprising a polyolefin, cellulose fibres and an unsaturated organosilane, characterized by a tensile elasticity modulus (E), measured at 100° C., higher than 1250 MPa.
Claim 3
Dependent Claim
45 words
Moulding compositions comprising a polyolefin, cellulose fibres and an unsaturated organosilane, characterized by a ratio G'/G" of their modulus G', representing their elastic response, to their loss modulus G", measured at 200° C. and 0.1 s -1 , with a value of at least 0.80.
Claim 4
Dependent Claim
45 words
Moulding compositions comprising a polyolefin, cellulose fibres and an unsaturated organosilane, characterized by a ratio G'/G" of their modulus G', representing their elastic response, to their loss modulus G", measured at 200° C. and 0.1 s -1 , with a value of at least 0.80.
Claim 5
Dependent Claim
15 words
Compositions according to claim 2, characterized by a G'/G" ratio of between 0.85 and 1.
Claim 6
Dependent Claim
30 words
Compositions according to claim 1, characterized in that the unsaturated organosilane contains at least one hydrolysable group and at least one polymerizable unsaturated vinyl group which are bonded to silicon.
Claim 7
Dependent Claim
24 words
Compositions according to claim 1, characterized in that the unsaturated organosilane is combined with an organic compound containing at least two polymerizable unsaturated groups.
Claim 8
Dependent Claim
17 words
Compositions according to claim 1, characterized in that the unsaturated organosilane is combined with a silicone-based surfactant.
Claim 9
Dependent Claim
18 words
Compositions according to claim 1, characterized in that the organosilane is combined with a compound generating free radicals.
Claim 10
Dependent Claim
26 words
Compositions according to claim 1, characterized in that they contain 30 to 250 parts by weight of cellulose fibres per 100 parts by weight of polyolefin.
Claim 11
Dependent Claim
26 words
Compositions according to claim 1, characterized in that they contain between 0.05 and 10% by weight of unsaturated organosilane relative to the weight of cellulose fibres.
Claim 12
Dependent Claim
63 words
Compositions according to any one of claims 1 to 9, characterized in that they contain: between 0.05 and 10% by weight, relative to the weight of the cellulose fibres, of an organic compound containing at least two polymerizable unsaturated groups, between 0.05 and 10% by weight of a silicone-based surfactant, and between 0.005 and 5% by weight of a compound generating free radicals.
Claim 13
Dependent Claim
9 words
Objects wrought from moulding compositions according to claim 1.
Claim 14
Dependent Claim
25 words
Moulding compositions according to claim 1, characterized in that they are produced by kneading the cellulose fibres in the premelted polyolefin containing the unsaturated organosilane.
Claim 15
Dependent Claim
23 words
Objects wrought from moulding compositions according to claim 12, characterized in that the kneaded mixture is converted directly into the objects so wrought.
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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) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |