Resin composition for extrusion molding

Details Resin composition for extrusion molding Resin composition for extrusion molding

1994-11-29

1996-12-24

Seccuro, Jr., Carman J.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

428516, 428513, 4284761, 428461, 4284235, 525240, 525227, 525222, 525221, 524128, 524528, 524522, 524523, C08L 2308, C08L 2304, B32B 2732, C08K 500

Patent

active

055872476

ABSTRACT:
A resin composition for extrusion molding which has a melt flow rate (MFR) of from 0.5 to 30 g/10 min., having (A) 1 to 80 parts by weight of an ethylenic polymer which gives an endothermic peak in a temperature range of from 80.degree. to 120.degree. C. in a temperature rise thermogram as measured by a differential scanning calorimeter, has a melt flow rate (MFR) of from 0.5 to 50 g/10 min., and is prepared by high-pressure radical polymerization, (B) 5 to 80 parts by weight of a copolymer of ethylene and an .alpha.-olefine containing 3 to 12 carbon atoms which gives at least one endothermic peak in a temperature range of from 110.degree. to 130.degree. C. in the temperature rise thermogram as described above, has a melt flow rate (MFR) of from 0.5 to 30 g/10 min. and a density of from 0.900 to 0.935 g/cm.sup.3 and (C) 5 to 70 parts by weight of the copolymer of ethylene and an .alpha.-olefin containing 3 to 12 carbon atoms which has a melt flow rate (MFR) of from 0.5 to 30 g/10 min. and a density of from 0.870 to 0.920 g/cm.sup.3 in an unannealed state, and gives no endothermic peak at temperatures above 110.degree. C. in the temperature rise thermogram as described above, and in which a ratio of a main component is not less than 80%; which gives a packaging material having significantly improved properties such as heat sealability at low temperature, heat-sealing strength, hot tacking property and bag breaking strength, and exhibits an excellent extrusion processability such as film forming property and extrusion loading.

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Database WPI, Section Ch, Week 8739, Derwent Publ. Ltd., Class A17, AN 8205190J & JP-A-57 174 329 Sep. 1987 *abstract*.

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