Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1977-12-27
1979-07-31
Wong, Jr., Harry
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
260 9, 260 174R, 260112R, 260117, 526259, 526262, 528117, 528422, 528 87, 528322, 525531, 525444, 525449, 525451, 525417, 525 59, 525282, 525502, 525 98, 525104, 525114, 525228, C08G 5902
Patent
active
041630971
ABSTRACT:
The invention relates to organic polymers which can be crosslinked under the action of light and which are suitable for carrying out photomechanical processes. These polymers are photochemically considerably more sensitive than known comparable polymers and their sensitivity can additionally also be further increased by means of a combination with sensitizers. The molecular weight is at least 1,000. The polymers contain, as light-sensitive groups, groups of the formula I ##STR1## wherein R and R.sub.1 independently of one another denote alkyl groups with at most 4 C atoms, or R and R.sub.1 conjointly denote the remaining part of a 5-membered to 6-membered carbocyclic ring.
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M. Kato et al., Polymer Letters, 8 263 (1970).
N. J. Turro, Molecular Photochemistry, W. A. Benjamin (1965) p. 107.
Bauman Marcus
Baumann Niklaus
Waterhouse John S.
Zweifel Hans
Ciba-Geigy Corporation
Hall Luther A. R.
Wong, Jr. Harry
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