US3872182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic moulding composition on the basis of polyoxymethylene
Assignee: Hoechst AG
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Filing: 1973-02-16
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Granted: 1975-03-18
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Expires: 1993-02-16
Abstract
Abstract A thermoplastic molding composition is composed of a linear poly(oxymethylene) and a graft copolymer the side chains of which consist essentially of oxymethylene groups. The said graft copolymer acts as a nucleating agent; its effectiveness is dependent on its amount, molecular weight and degree of grafting. Molded articles made of said composition show improved mechanical properties.
Inventors
- 👤 Gunter Sextro
- 👤 Karlheinz Burg
- 👤 Rudolf Kern
- 👤 Heinz Schmidt
- 👤 Ernst Wolters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:21
CPC Classifications
C; C08; C08L; C08L59/00; C08L59/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
181 words
A THERMOPLASTIC MOLDING COMPOSITION BASED ON POLYERS PREDOMINANTLY COMPRISING OXYMETHYLENE UNITS AND ESSENTIALLY CONSISTING OF A MIXTURE OF A. 99.999 TO 80 WT. % OF A LINEAR POLY(OXYMETHYLENE) OR A COPOLYMER CONTAINING OXYMETHYLENE UNITS AND 0.1 TO 20 WT. % OF OXYALKYLENE GROUPS, BASED ON THE WEIGHT OF SAID COPOLYMER, WITH 2 TO 8 ADJACENT CARBON ATOMS, AND B. 0.001 TO 20 WT. %, OF A GRAFT COPOLYMER CONSISTING OF 1. 0.1 TO 30 WT. %, BASED ON THE WEIGHT OF SAID GRAFT COPOLYMER, OF A PRIMARY POLYMER WITH A MAIN CHAIN CONSISTING OF ALIPHATICALLY OR AROMATICALLY BOUND CARBON ATOMS WHICH MAY BE INTERRUPTED BY ETHER OXYGEN ATOMS, THE PRIMARY POLYMER HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF AT LEAST 400 AND 2. 99.9 TO 70 WT. %, BASED ON THE WEIGHT OF SAID GRAFT COPOLYMER, OF SIDE CHAINS GRAFTED ON SAID PRIMARY POLYMER, SAID SIDE CHAINS CONSISTING OF OXYMETHYLENE GROUPS WHICH MAY BE INTERRUPTED BY 0.1 TO 20 WT. % BASED ON THE WEIGHT OF SAID SIDE CHAINS, OF STATISTICALLY DISTRIBUTED OXYALKYLENE GROUPS WITH 2 TO 8 ADJACENT CARBON ATOMS.
Claim 2
Dependent Claim
181 words
A THERMOPLASTIC MOLDING COMPOSITION BASED ON POLYERS PREDOMINANTLY COMPRISING OXYMETHYLENE UNITS AND ESSENTIALLY CONSISTING OF A MIXTURE OF A. 99.999 TO 80 WT. % OF A LINEAR POLY(OXYMETHYLENE) OR A COPOLYMER CONTAINING OXYMETHYLENE UNITS AND 0.1 TO 20 WT. % OF OXYALKYLENE GROUPS, BASED ON THE WEIGHT OF SAID COPOLYMER, WITH 2 TO 8 ADJACENT CARBON ATOMS, AND B. 0.001 TO 20 WT. %, OF A GRAFT COPOLYMER CONSISTING OF 1. 0.1 TO 30 WT. %, BASED ON THE WEIGHT OF SAID GRAFT COPOLYMER, OF A PRIMARY POLYMER WITH A MAIN CHAIN CONSISTING OF ALIPHATICALLY OR AROMATICALLY BOUND CARBON ATOMS WHICH MAY BE INTERRUPTED BY ETHER OXYGEN ATOMS, THE PRIMARY POLYMER HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF AT LEAST 400 AND 2. 99.9 TO 70 WT. %, BASED ON THE WEIGHT OF SAID GRAFT COPOLYMER, OF SIDE CHAINS GRAFTED ON SAID PRIMARY POLYMER, SAID SIDE CHAINS CONSISTING OF OXYMETHYLENE GROUPS WHICH MAY BE INTERRUPTED BY 0.1 TO 20 WT. % BASED ON THE WEIGHT OF SAID SIDE CHAINS, OF STATISTICALLY DISTRIBUTED OXYALKYLENE GROUPS WITH 2 TO 8 ADJACENT CARBON ATOMS.
Claim 3
Dependent Claim
58 words
99.9 to 70 wt. %, based on the weight of said graft copolymer, of side chains grafted on said primary polymer, said side chains consisting of oxymethylene groups which may be interrupted by 0.1 to 20 wt. % based on the weight of said side chains, of statistically distributed oxyalkylene groups with 2 to 8 adjacent carbon atoms.
Claim 4
Dependent Claim
58 words
99.9 to 70 wt. %, based on the weight of said graft copolymer, of side chains grafted on said primary polymer, said side chains consisting of oxymethylene groups which may be interrupted by 0.1 to 20 wt. % based on the weight of said side chains, of statistically distributed oxyalkylene groups with 2 to 8 adjacent carbon atoms.
Claim 5
Dependent Claim
70 words
A process for preparing a thermoplastic molding composition based on polymers predominantly comprising oxymethylene units, which comprises mixing a. 99.999 to 80 wt. % of a linear poly(oxymethylene) or a copolymer containing oxymethylene units and 0.1 to 20 wt. %, based on the weight of said copolymer, of oxyalkylene groups having 2 to 8 adjacent carbon atoms b. with 0.01 to 20 wt. % of a graft copolymer consisting of
Claim 6
Dependent Claim
70 words
A process for preparing a thermoplastic molding composition based on polymers predominantly comprising oxymethylene units, which comprises mixing a. 99.999 to 80 wt. % of a linear poly(oxymethylene) or a copolymer containing oxymethylene units and 0.1 to 20 wt. %, based on the weight of said copolymer, of oxyalkylene groups having 2 to 8 adjacent carbon atoms b. with 0.01 to 20 wt. % of a graft copolymer consisting of
Claim 7
Dependent Claim
84 words
99.9 to 70 wt. %, based on the weight of said graft copolymer, of side chains grafted on said primary polymer, said side chains being formed by oxymethylene groups which may be interrupted by 0.1 to 20 wt. %, based on the weight of said side chains, of statistically distributed oxyalkylene groups with 2 to 8 adjacent carbon atoms, in pulverulent or granulated form, each at a temperature below 100*C, and melting and homogenizing said mixture at a temperature of from 150* to 250*C.
Claim 8
Dependent Claim
84 words
99.9 to 70 wt. %, based on the weight of said graft copolymer, of side chains grafted on said primary polymer, said side chains being formed by oxymethylene groups which may be interrupted by 0.1 to 20 wt. %, based on the weight of said side chains, of statistically distributed oxyalkylene groups with 2 to 8 adjacent carbon atoms, in pulverulent or granulated form, each at a temperature below 100*C, and melting and homogenizing said mixture at a temperature of from 150* to 250*C.
Claim 9
Dependent Claim
58 words
99.9 to 70 wt. %, based on the weight of said graft copolymer, of side chains grafted on said primary polymer, said side chains consisting of oxymethylene groups which may be interrupted by 0.1 to 20 wt. %, based on the weight of said side chains, of statistically distributed oxyalkylene groups with 2 to 8 adjacent carbon atoms.
Claim 10
Dependent Claim
58 words
99.9 to 70 wt. %, based on the weight of said graft copolymer, of side chains grafted on said primary polymer, said side chains consisting of oxymethylene groups which may be interrupted by 0.1 to 20 wt. %, based on the weight of said side chains, of statistically distributed oxyalkylene groups with 2 to 8 adjacent carbon atoms.
Claim 11
Dependent Claim
84 words
99.9 to 70 wt. %, based on the weight of said graft copolymer, of side chains grafted on said primary polymer, said side chains being formed by oxymethylene groups which may be interrupted by 0.1 to 20 wt. %, based on the weight of said side chains, of statistically distributed oxyalkylene groups with 2 to 8 adjacent carbon atoms, in pulverulent or granulated form, each at a temperature below 100*C., and melting and homogenizing said mixture at a temperature of from 150* to 250*C.
Claim 12
Dependent Claim
84 words
99.9 to 70 wt. %, based on the weight of said graft copolymer, of side chains grafted on said primary polymer, said side chains being formed by oxymethylene groups which may be interrupted by 0.1 to 20 wt. %, based on the weight of said side chains, of statistically distributed oxyalkylene groups with 2 to 8 adjacent carbon atoms, in pulverulent or granulated form, each at a temperature below 100*C., and melting and homogenizing said mixture at a temperature of from 150* to 250*C.
Claim 13
Dependent Claim
70 words
A thermoplastic molding composition based on polymers predominantly comprising oxymethylene units and consisting essentially of a mixture of a. 99.999 to 80 wt. % of a linear poly(oxymethylene) or a copolymer containing oxymethylene units and 0.1 to 20 wt. %, based on the weight of said copolymer of oxyalkylene groups, with 2 to 8 adjacent carbon atoms, and b. 0.001 to 20 wt. % of a graft copolymer consisting of
Claim 14
Dependent Claim
70 words
A thermoplastic molding composition based on polymers predominantly comprising oxymethylene units and consisting essentially of a mixture of a. 99.999 to 80 wt. % of a linear poly(oxymethylene) or a copolymer containing oxymethylene units and 0.1 to 20 wt. %, based on the weight of said copolymer of oxyalkylene groups, with 2 to 8 adjacent carbon atoms, and b. 0.001 to 20 wt. % of a graft copolymer consisting of
Claim 15
Dependent Claim
19 words
A thermoplastic molding composition according to claim 3 wherein the polyepoxide is a reaction product of epichlorhydrin and 2,2-bis(4,4-hydroxyphenyl)-propane.
Claim 16
Dependent Claim
14 words
A molding composition according to claim 3 wherein the polyepoxide is an epoxidized poly(1,4-butadiene).
Claim 17
Dependent Claim
14 words
A molding composition accirding to claim 3 wherein the polyepoxide is an epoxidized poly(1,4-isoprene).
Claim 18
Dependent Claim
19 words
A thermoplastic molding composition wherein the polyepoxide has an epoxide equivalent of 0.01 to 1 moles per 100 grams.
Claim 19
Dependent Claim
19 words
A thermoplastic molding composition wherein the polyepoxide has an epoxide equivalent of 0.01 to 1 moles per 100 grams.
Claim 20
Dependent Claim
70 words
A process for preparing a thermoplastic molding composition based on polymers predominantly comprising oxymethylene units, which comprises mixing a. 99.999 to 80 wt. % of a linear poly(oxymethylene) or a copolymer containing oxymethylene units and 0.1 to 20 wt. %, based on the weight of said copolymer, of oxyalkylene groups having 2 to 8 adjacent carbon atoms, b. with 0.01 to 20 wt. % of a graft copolymer consisting of
Claim 21
Dependent Claim
70 words
A process for preparing a thermoplastic molding composition based on polymers predominantly comprising oxymethylene units, which comprises mixing a. 99.999 to 80 wt. % of a linear poly(oxymethylene) or a copolymer containing oxymethylene units and 0.1 to 20 wt. %, based on the weight of said copolymer, of oxyalkylene groups having 2 to 8 adjacent carbon atoms, b. with 0.01 to 20 wt. % of a graft copolymer consisting of
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |