Concentrates of modifying agents in polymers

Details Concentrates of modifying agents in polymers Concentrates of modifying agents in polymers

1990-08-30

1992-12-22

Marquis, Melvin I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525285, 525286, 525288, 525301, C08F26304

Patent

active

051735393

ABSTRACT:
A concentrate comprising a carrier polymer and at least 30%, by weight of the carrier polymer, of at least one modifying agent for a thermoplastic polymer is disclosed. The carrier polymer is a polymer of alpha-olefins having a heat of crystallization of less than 70 J/g and, if the copolymer is an ethylene/vinyl acetate copolymer, containing at least 18% by weight of vinyl acetate comonomer. The modifying agent is absorbed into the carrier polymer. In embodiments, the modifying agent is a polymerizable monomer. The concentrates provide a versatile method of addition of modifying agents into thermoplastic polymers.

REFERENCES:
patent: 4678834 (1987-07-01), Bolvin et al.
patent: 4707517 (1987-11-01), Bullen et al.

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