US4136080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester composites
Assignee: OSI Specialties Inc
•
Filing: 1976-09-29
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Granted: 1979-01-23
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Expires: 1996-09-29
Abstract
Abstract This invention is concerned with the treatment of particulate alumina trihydrate surfaces with a polyether substituted silicon compound which serves to enhance its employment in reinforced polyester composite compositions.
Inventors
- 👤 Sidney E. Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:27
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3684; C09C3/00; C09C3/12; C01; C01P; C01P2004/00; C01P2004/51; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/80
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A reinforced polyester composition comprising therein alumina trihydrate particles containing on their surfaces a silane, its hydrolyzates or resulting condensate, which silane has the following general formula: R.sup.II (OR.sup.I).sub.a ORSiX.sub.3 wherein R can be any divalent organic group which is either oxygen or carbon bonded to the silicon atom, R I is one or more 1,2-alkylene groups each containing at least 2 carbon atoms and typically not more than about 4 carbon atoms; R II is hydrogen, alkyl, acyloxy or an organofunctional group; X is a hydrolyzable group; and a is a number having an average value of 4 to about 150.
Claim 2
Dependent Claim
102 words
A reinforced polyester composition comprising therein alumina trihydrate particles containing on their surfaces a silane, its hydrolyzates or resulting condensate, which silane has the following general formula: R.sup.II (OR.sup.I).sub.a ORSiX.sub.3 wherein R can be any divalent organic group which is either oxygen or carbon bonded to the silicon atom, R I is one or more 1,2-alkylene groups each containing at least 2 carbon atoms and typically not more than about 4 carbon atoms; R II is hydrogen, alkyl, acyloxy or an organofunctional group; X is a hydrolyzable group; and a is a number having an average value of 4 to about 150.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the amount of silane is from about 0.25 to about 5 weight percent of the particles.
Claim 4
Dependent Claim
23 words
The composition of claim 2 wherein the amount of the silane is from about 0.5 to about 3 weight percent of the particles.
Claim 5
Dependent Claim
72 words
The composition of claim 1 wherein the silane is coreacted or comixed with a different silane, as encompassed by the following formula: R.sup.3.sub.n (SiX.sub.4-n).sub.b or the cohydrolyzate or the cocondensate of such different silane with the silane, wherein R 3 is an organic radical whose free valence is equal to the value of b, X is as defined above, n is equal to 0 or 1 and b is a positive number.
Claim 6
Dependent Claim
11 words
The composition of claim 1 further comprising a low profile additive.
Claim 7
Dependent Claim
19 words
The composition of claim 1 wherein the silane has the general formula: H.sub.3 CO(C.sub.2 H.sub.4 O).sub.7.5 C.sub.3 H.sub.6 Si(OCH.sub.3).sub.3
Claim 8
Dependent Claim
12 words
The composition of claim 1 wherein the polyester is an unsaturated polyester.
Claim 9
Dependent Claim
20 words
The composition of claim 6 wherein the polyester is an unsaturated polyester and the composition contains a low profile additive.
Claim 10
Dependent Claim
19 words
The composition of claim 6 wherein the silane has the general formula: H.sub.3 CO(C.sub.2 H.sub.4 O).sub.113 C.sub.3 H.sub.6 Si(OCH.sub.3).sub.3
References Cited (Backward Citations)
US2846458A
Cited
GB1062595A
Cited
US3290165A
Cited
US3334123A
Cited
US3414604A
Cited
US3388144A
Cited
US3560253A
Cited
US3563939A
Cited
GB1278413A
Cited
US3556754A
Cited
US3647742A
Cited
GB1348372A
Cited
US3832326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |