Granules of coated vinyl acetate/ethylene copolymer, process for

Details Granules of coated vinyl acetate/ethylene copolymer, process for Granules of coated vinyl acetate/ethylene copolymer, process for

1991-12-30

1993-06-22

Kight, III, John

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428 351, 428500, 428516, 428349, 4272071, 4272082, 427222, 525 48, 525243, B32B 516, B32B 900

Patent

active

052215806

ABSTRACT:
Coextruded granules of coated vinyl acetate/ethylene copolymers consisting of vinyl acetate/ethylene copolymer coated by coextrusion with a polar thermoplastic polymer, such as, for example, poly-(methyl methacrylate) or an ethylene/vinyl acetate copolymer. They are advantageously produced by extrusion drying of a wet coagulate of vinyl acetate/ethylene copolymer to produce a dry, extruded rod, in-line coating of the dry, extruded rod by coextrusion thereof with a polar thermoplastic polymer to produce a coextruded rod, and granulating the coextruded rod. The coextruded granules are not tacky, can be stored without problem, and are useful as coextrusion adhesives.

REFERENCES:
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patent: 3911193 (1975-10-01), Resz et al.
patent: 4585694 (1986-04-01), Dehennau
patent: 4659625 (1987-04-01), Decroly et al.
patent: 4680207 (1987-07-01), Murray
patent: 4774146 (1988-09-01), Dehennau et al.
patent: 4959269 (1990-09-01), Dehennau
Patent Abstracts of Japan, vol. 8, No. 191 (M-322) Sep. 4th, 1984; & JP-A-59 81 121 (Touyou Seikan K.K.) Oct. 5, 1984.

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