| 摘要 |
<p>1528999 Photopolymerizable reversibly gelled polymer compositions DOW CHEMICAL CO 19 Aug 1976 [20 Aug 1975] 34629/76 Headings C3R and C3V [Also in Division G2] A reversibly gelled composition which is a free radical curable by imagewise exposure to actinic radiation is obtained by contacting a dialdehyde (including hydrated or alcoholated derivatives thereof) as gelling agent with a composition comprising either (I) at least one polymer containing at least one ethylenically unsaturated group and at least two primary -OH and/or -SH groups and/or (II) at least one polymer containing at least one ethylenically unsaturated group and at least one polymer containing at least two primary -OH and/or -SH groups. I may be a polymer of formula as described and claimed in Specification 1,488,412. The dialdehyde may be glyoxal. The subject matter of Specification 1,467,090 is disclaimed.</p> |
