| 摘要 |
<p>Process for the Preparation of Heat-Curable Adhesive Films Heat-curable adhesive films of variable tack can be prepared: 1. by coating a peelable release film or substrate with a liquid mixture of substances containing (a) 2-24% by weight of a photopolymerisable compound containing at least one grouping CH2=C(R)COO- in which R is a hydrogen atom or a methyl group, (b) 20-90% by weight of a heat-curable epoxide resin or mixture of epoxide resins containing no photopolymerisable groups, (c) a heat-activatable curing agent for epoxide resins, (d) 0.1 to 2% by weight of an accelerator, (e) 0.01 to 5% by weight of a photopolymerisation catalyst for the component (a) and (f) if appropriate, further additives, the sum of the components (a) to (f) being 100% by weight, 2. by covering the layer, if necessary, with a reinforcing material and again coating with a mixture of substances according to 1, and 3. irradiating the layer thus obtained with actinic light.</p> |
