Multilayer composite interpolymer comprising a bimodal particle

Details Multilayer composite interpolymer comprising a bimodal particle Multilayer composite interpolymer comprising a bimodal particle

1988-01-29

1990-01-30

Seccuro, Carman J.

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

Synthetic resins

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

525 72, 525 77, 525 78, 525 79, 525 80, 525 81, 525 82, 525193, 525288, 525303, 525305, 525304, 525296, 525301, 525309, 525902, C08L 1900, C08L 5104, C08L 5100, C08L 3304

Patent

active

048974498

ABSTRACT:
A multilayer interpolymer material of an elastomeric inner phase polymerized from (a) 50-99.9 parts of at least one among: conjugated dienes and alkyl and aralkyl acrylates, (b) 0-49.9 parts of at least one copolymerizable monomer, (c) 0.05-8 parts of at least one crosslinking monomer, and (d) 0.05-6 parts of at least one grafting monomer, and a nonelastomeric outer phase, polymerized from (a) 50-99.9 parts by weight of at least one among: alkyl methacrylates, vinyl aromatic hydrocarbons and unsaturated nitriles, (b) 0.1-50 parts of at least one copolymerizable monomer, and (c) 0-5 parts of at least one chain-limiting agent, the parts being given by weight, it being possible for the said polymer to comprise a nonelastomeric or else elastomeric core phase without grafting and crosslinking monomers. Two populations of particles of mean diameter of approximately 40-150 nm and approximately 160-500 nm respectively are mixed in given ratios. This improves the impact strength of the resultant matrices.

REFERENCES:
patent: 150032 (1888-01-01), Gaillard et al.

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