US3883468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic molding compositions
Assignee: BASF SE
•
Filing: 1973-12-19
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Granted: 1975-05-13
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Expires: 1993-12-19
Abstract
Abstract Thermoplastic molding compositions of polyoxymethylene, glass fibers and adhesion promoting substances. The adhesion promoters used are polymeric organosilanes. The molding compositions show improved toughness and strength properties.
Inventors
- 👤 Franz Schmidt
- 👤 Wolfgang Schenk
- 👤 Rolf Wurmb
- 👤 Eugen Meyer-Simon
- 👤 Friedrich M Thurn
- 👤 Werner Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:04
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C08J2359/00; C08J2359/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
A THERMOPLASTIC MOLDING COMPOSITION COMPRISING: A. A POLYOXYMETHYLENE; B. FROM ABOUT 15-50 PERCENT BY WEIGHT OF GLASS FIBERS; AND, C. FROM 0.2 TO 2.0 PERCENT BY WEIGHT OF A POLYMERIC ORGANOSILANE ADHESION PROMOTER OF THE FORMULA 1 X3SI-R- (OCH2)N-O-R1 M-O-R-SIX3 IN WHICH X DENOTES HALOGEN, C1-7 HYDROCARBON-OXY, C1-7 ACYL-OXY OR HYDROXYL, THE GROUPS X BEING IDENTICAL OR DIFFERENT, R DENOTES STRAIGHT-CHAIN OR BRANCHED-CHAIN DIVALENT C2-10 HYDROCARBON RADICALS ATTACHED TO THE SILICON ATOM BY A SILICON-CARBON BOND WHICH MAY BE INTERRUPTED AT ONE OR MORE POINTS BY AN OXYGEN ATOM, THE GROUPS R BEING IDENTICAL OR DIFFERENT, R1 DENOTES C2-6 ALKYLENE WHICH MAY EXHIBIT ONE OR TWO OXYGEN BRIDGES, N IS A NUMBER BETWEEN 1 AND 5, AND M IS A NUMBER BETWEEN APPROX. 10 AND 200.
Claim 2
Dependent Claim
126 words
A THERMOPLASTIC MOLDING COMPOSITION COMPRISING: A. A POLYOXYMETHYLENE; B. FROM ABOUT 15-50 PERCENT BY WEIGHT OF GLASS FIBERS; AND, C. FROM 0.2 TO 2.0 PERCENT BY WEIGHT OF A POLYMERIC ORGANOSILANE ADHESION PROMOTER OF THE FORMULA 1 X3SI-R- (OCH2)N-O-R1 M-O-R-SIX3 IN WHICH X DENOTES HALOGEN, C1-7 HYDROCARBON-OXY, C1-7 ACYL-OXY OR HYDROXYL, THE GROUPS X BEING IDENTICAL OR DIFFERENT, R DENOTES STRAIGHT-CHAIN OR BRANCHED-CHAIN DIVALENT C2-10 HYDROCARBON RADICALS ATTACHED TO THE SILICON ATOM BY A SILICON-CARBON BOND WHICH MAY BE INTERRUPTED AT ONE OR MORE POINTS BY AN OXYGEN ATOM, THE GROUPS R BEING IDENTICAL OR DIFFERENT, R1 DENOTES C2-6 ALKYLENE WHICH MAY EXHIBIT ONE OR TWO OXYGEN BRIDGES, N IS A NUMBER BETWEEN 1 AND 5, AND M IS A NUMBER BETWEEN APPROX. 10 AND 200.
Claim 3
Dependent Claim
22 words
A thermoplastic molding composition as claimed in claim 1, wherein the adhesion promoting substances used are polymeric organosilanes of the formula: (H3CO)3Si-(CH2)3-(O-CH2-O-(CH2)2)m-OCH2-O-(CH2)3-Si(OCH3)3.
Claim 4
Dependent Claim
21 words
A thermoplastic molding composition as claimed in claim 1, wherein the adhesion promoting substances are polymeric organosilanes of the formula: (H5C2O)3Si-(CH2)3-(O-CH2-O-(CH2)2)m-OCH2-O-(CH2-O-(CH2)3-Si(OC2H5)3
Claim 5
Dependent Claim
24 words
A thermoplastic molding composition as set forth in claim 1 wherein the amount of glass fiber is from 0.2 to 0.6 percent by weight.
Claim 6
Dependent Claim
24 words
A thermoplastic molding composition as set forth in claim 1 wherein the amount of glass fiber is from 0.5 to 2.0 percent by weight.
Claim 7
Dependent Claim
24 words
A thermoplastic molding composition as set forth in claim 1 wherein the amount of glass fiber is from 25 to 35 percent by weight.
Claim 8
Dependent Claim
23 words
A thermoplastic molding composition as set forth in claim 1 wherein the polyoxymethylene contains more than 75 percent by weight of oxymethylene groups.
References Cited (Backward Citations)
US3542722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |