US3632402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic molding compositions on the basis of saturated polyesters
Assignee: Hoechst AG
•
Filing: 1969-04-18
•
Granted: 1972-01-04
•
Expires: 1989-04-18
Abstract
Abstract Process for the manufacture of thermoplastic molding compositions on the basis of saturated linear polyesters wherein the polyester granules containing inert inorganic solids and polyfunctional epoxides are coated with a neutral or partially neutralized salt of a montan wax or a montan wax ester.
Inventors
- 👤 Klaus Weissermel
- 👤 Rudolf Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:54
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
31 words
The composition of claim 1 wherein the polyester is mixed with 0.6 to 1.0 percent by weight of an inert inorganic solid having a particles size of less than 5 microns.
Claim 2
Dependent Claim
21 words
The composition of claim 1 wherein the polyester is mixed with 0.05 to 0.03 percent by weight of a polyfunctional epoxide.
Claim 3
Dependent Claim
54 words
The composition of claim 1 wherein the polyester is coated with 0.05 to 5 percent by weight, calculated on the polyester, of a montan wax salt, a salt of a montan wax ester or of a montan wax acid partially neutralized with 0.1 to 0.9 equivalent of alkali metal hydroxide or alkali metal oxide.
Claim 4
Dependent Claim
54 words
The composition of claim 1, wherein the polyester is coated with 0.15 to 0.25 percent by weight, calculated on the polyester, of a montan wax salt, a salt of a montan wax ester or of a montan wax acid partially neutralized with 0.1 to 0.9 equivalent of alkali metal hydroxide or alkali metal oxide.
Claim 5
Dependent Claim
14 words
The composition of claim 1, wherein the saturated linear polyester is polyethylene glycol terephthalate.
Claim 6
Dependent Claim
13 words
The composition of claim 1, wherein the saturated linear polyester is polycyclohexane-1,4-dimethylol terephthalate.
Claim 7
Dependent Claim
30 words
The composition of claim 1 wherein the inert inorganic solid is selected from the group consisting of a metal oxide, an alkaline earth metal salt, a silicate or glass powder.
Claim 8
Dependent Claim
16 words
The composition of claim 8, wherein the inert inorganic solid is sodium-aluminum silicate or calcium-magnesium carbonate.
Claim 9
Dependent Claim
14 words
The composition of claim 1 wherein the polyfunctional epoxide is an alkylene-polyol glycidyl ether.
Claim 10
Dependent Claim
12 words
The compositiOn of claim 10, wherein the epoxide is butane-diol-1,4 diglycidyl ether.
Claim 11
Dependent Claim
21 words
The composition of claim 1 wherein the polyester granules are coated with a neutral or partially neutralized sodium salt of montanates.
References Cited (Backward Citations)
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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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |