US4251644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polar resins having improved characteristics by blending with EPM and EPDM polymers
Assignee: COPOLYMER RUBER AND CHEMICAL Corp
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Filing: 1979-10-01
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Granted: 1981-02-17
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Expires: 1999-10-01
Abstract
Abstract The improvement of physical and mechanical properties of polar resins such as nylon and dacron resins by blending with EPM and EPDM resins which have been rendered more compatible by the modification to incorporate polar groups.
Inventors
- 👤 Ralph K. Joffrion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:52
CPC Classifications
C; C08; C08L; C08L67/00; C08L77/00; C08L23/00; C08L23/02; C08L23/16; C08L23/26; C08L23/36; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
A polar resin selected from the group consisting of polyamides and polyester resins having improved physical and mechanical properties comprising a blend of the polar resin with up to 50% by weight of an EPM or EPDM polymer which has been rendered more compatible with the polar resin by having incorporated therein polar groups as a monomer bound in the polymer by copolymerization with the EPM or EPDM monomers or grafted onto the EPM or EPDM polymer after formation thereof in which the polar groups are an amine or an amide group.
Claim 2
Dependent Claim
92 words
A polar resin selected from the group consisting of polyamides and polyester resins having improved physical and mechanical properties comprising a blend of the polar resin with up to 50% by weight of an EPM or EPDM polymer which has been rendered more compatible with the polar resin by having incorporated therein polar groups as a monomer bound in the polymer by copolymerization with the EPM or EPDM monomers or grafted onto the EPM or EPDM polymer after formation thereof in which the polar groups are an amine or an amide group.
Claim 3
Independent Claim
108 words
The method of blending an EPM or EPDM resin with a polar resin selected from the group consisting of polyamides and polyester resins to form a composite having improved mechanical and physical properties comprising improving the compatibility of the EPM or EPDM resin with the polar resin by incorporating into the EPM or EPDM resin highly polar groups selected from the group consisting of amine and amide groups, and reducing the EPM or EPDM resin and the polar resin to a plastic stage and admixing the modifying EPM or EPDM with the polar resin while in their plastic stage to produce a blend of the polymeric resinous materials.
Claim 4
Independent Claim
108 words
The method of blending an EPM or EPDM resin with a polar resin selected from the group consisting of polyamides and polyester resins to form a composite having improved mechanical and physical properties comprising improving the compatibility of the EPM or EPDM resin with the polar resin by incorporating into the EPM or EPDM resin highly polar groups selected from the group consisting of amine and amide groups, and reducing the EPM or EPDM resin and the polar resin to a plastic stage and admixing the modifying EPM or EPDM with the polar resin while in their plastic stage to produce a blend of the polymeric resinous materials.
Claim 5
Dependent Claim
52 words
The method as claimed in claim 2 in which the polar groups are incorporated into the EPM or EPDM resin by copolymerization of the monomers during the formation of the EPM or EPDM resin with the monomer containing the polar grouping whereby the monomer becomes bound in the EPM or EPDM polymer.
Claim 6
Dependent Claim
29 words
The method as claimed in claim 3 in which the polarized EPM or EPDM polymer is incorporated in the polymer resin in an amount up to 50% by weight.
Claim 7
Dependent Claim
38 words
The method as claimed in claim 2 in which the polar group is incorporated into the EPM or EPDM resin by the grafting of a compound containing the polar group onto an already formed EPM or EPDM resin.
Claim 8
Dependent Claim
43 words
The method as claimed in claim 2 in which the modified EPM or EPDM is blended with the polar resin in the ratio of 2-20 parts by weight of the modified EPM or EPDM per 98-80 parts by weight of the polar resin.
References Cited (Backward Citations)
US3974234A
Cited
US4100224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |