Accession Number:

ADA018348

Title:

The Effect of Bulky Cyclic Side Groups on the Heat Resistance of Carbochain Polymers,

Descriptive Note:

Corporate Author:

ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)

Report Date:

1975-09-01

Pagination or Media Count:

7.0

Abstract:

Copolymers of methylidine phthalide with styrene, acrylonitrile, and methyl methacrylate are reported. Measurement of their glass transition temperatures T sub g s by thermomechanical and dynamic mechanical techniques leads to an extrapolated value for the T sub g of polymethylidine phthalide of 370-380C. The introduction of phthalide groups into carbon-chain polymers so that part of the ring lies in the main chain leads to a sharp increase in heat resistance. Author

Subject Categories:

  • Polymer Chemistry
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE