Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1979-08-03
1980-08-12
Ziegler, J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
351159, 525263, 525265, C08L 2300
Patent
active
042174333
ABSTRACT:
When an acrylic monomer such as methyl methacrylate is copolymerized with an allyl monomer such as allyl methacrylate whereby the resulting copolymer has active pendant allyl groups, this copolymer is then crosslinked with diethylene glycol bis (allyl carbonate) monomer (called ADC). The resulting product has considerable reduction in shrinkage while maintaining optical clarity and is useful as lenses.
REFERENCES:
patent: 4059616 (1977-11-01), Lewis et al.
patent: 4125695 (1978-11-01), Kamath
patent: 4139578 (1979-02-01), Baughman et al.
Pennwalt Corporation
Ziegler J.
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