POLYPROPYLENE-BASED ADHESIVE COMPOSITION

PROBLEM TO BE SOLVED: To provide a hot-melt adhesive that includes a low softening temperature, hardness, elasticity, low migration and blooming, and resistance to discoloration.SOLUTION: The hot-melt adhesive comprises a copolymer of propylene and at least one comonomer selected from the group cons...

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Bibliographic Details
Main Authors KARJALA TERESA P, ANSEMS PATRICIA, RICKEY CYNTHIA L, TAHA ANGELA N, DIEHL CHARLES F, YALVAC SELIM, KARANDE SEEMA V
Format Patent
LanguageEnglish
Published 07.03.2013
Subjects
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
COMPOSITIONS BASED THEREON
DYES
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF MATERIALS AS ADHESIVES
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Summary:PROBLEM TO BE SOLVED: To provide a hot-melt adhesive that includes a low softening temperature, hardness, elasticity, low migration and blooming, and resistance to discoloration.SOLUTION: The hot-melt adhesive comprises a copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and Cα-olefins, the copolymer having (i) units derived from propylene of greater than about 50 mole percent, (ii) a Brookfield viscosity at 190°C from about 50 to about 100,000 cP, (iii) an MWD from about 1.5 to about 15, and (iv) containing less than about 50 ppm residual catalyst metal.
Bibliography:Application Number: JP20120208104