Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-12-30
1993-12-28
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 74, 525 78, 525 80, 525194, 525208, 525221, 525222, 428 368, 428 369, 428 3692, C08L 5300
Patent
active
052740358
ABSTRACT:
This invention relates to a tube prepared by the process comprising the steps of (1) blending polymer composition comprising (A) ethylene vinyl acetate copolymer and greater than 0.020% by weight of a cross-linking agent; or (B) a mixture of (a) a major amount of an ethylene vinyl acetate copolymer, (b) a minor amount of one or more polymers selected from (i) an propylene ethylene copolymer, (ii) at least one selectively hydrogenated block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene, (iii) at least one selectively hydrogenated block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene to which has been grafted with an alpha,beta-olefinically unsaturated monocarboxylic or dicarboxylic acid reagent, (iv) at least one terpolymer of an alpha-olefin, at least one acrylic ester, and an alpha,beta-olefinically unsaturated dicarboxylic acid reagent, or a glycidyl acrylate, (v) at least copolymer of an alpha-olefin and at least one acrylic ester, (vi) at least one vinyl aromatic hydrocarbon; and (vii) at least one polyetheramide block copolymer, and optionally, (c) a cross-linking agent provided that when (b) is (i), then the mixture includes the cross linking agent (c); and (2) extruding the polymer composition into the tube. The present invention also relates to polymer compositions for making the tubing. The tubes, especially medical tubes, of the present invention have improved kink resistance, coilability, clarity, flexibility and stability under sterilization conditions.
REFERENCES:
patent: 3865776 (1975-02-01), Gerges
patent: 3941859 (1976-03-01), Batiuk et al.
patent: 4243576 (1981-01-01), Fischer et al.
patent: 4266542 (1981-05-01), Becker et al.
patent: 4551140 (1985-11-01), Shinohara
patent: 4613640 (1986-09-01), Deisler et al.
patent: 4675364 (1987-06-01), Churma et al.
patent: 4707389 (1987-11-01), Ward
patent: 4810542 (1989-03-01), Kawai et al.
patent: 4923742 (1990-05-01), Killian et al.
patent: 4945127 (1990-07-01), Kagawa et al.
patent: 4948643 (1990-08-01), Mueller
Ferro Corporation
Johnson Rachel
Kight III John
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