Resinous Reporter

The developmenf of self-curing resins, i.e., systems curing without photoinitiators or, in some cases, with just small amounts of photoinitiators, has been reported recently. Such resins are synthesized by Michael reaction of acrylic functional materials with Michael donor compounds such as acetoacetates. The resulting product has an increased molecular weight compared to the parent acrylate(s). This provides resins with reduced volatility and propensity for skin absorpfion. This new technology is versatile and flexible and opens a possibility of synfhesis of a large number of different acrylate resins. The novel resins reportedly exhibit unique depth of cure capability. In the absence of a photoinitiator (PI), film of approximately 10 mils (0.25 mm) thick can be cured at a line speed of 100 fpm (30.5 m/min). When only 1% of PI is added, the thickness of film that can be cured increases to over 100 mils (2.5 mm). 

A number of house organs are concerned with the working and fabrication of materials into consumer products. Particularly outstanding among this type are those in the field of plastics chemistry, such as the Durez Molder Plaskon Magazine and Resinous Reporter. 

The results obtained with the K 1481 resin reported in Table 5 show that the acid conversion normally increases with the increase of the amount of catalyst in the medium. The variations of the activity and the selectivity observed in these experiments are similar to those presented in the previous paragraph concerning the influence of reaction time. It can thus be concluded that there is no significant modification caused by external diffusion phenomena. 

Savastano, D. The resin report Rising raw material costs, slowing economy are major concerns. Ink WorldlQQl, 7, 36-38. 

Figure 21.22. Separation of amino acids by ion-exchange chromatography. Resin Durrum DC-IA, a sulfonatedpolystyrene-divinylbenzene cation exchanger of dp = S pm. Ten nanomole calibration mixture. Flow rate 70 mljhr. From James R. Benson, Durrum Resin Report No. 5, April, 1973, Durrum Chemical Corp., by permission of Durrum Chemical Corp.

Fig. 4. Infrared spectrum (KBr pellet) of Boc-PEG-PS graft resin support, 0.26 mmol/g loading (resin reported in Section 2.6 and in Table 1, line 2).

Bisphenol A is used with epichlorhydrin for the synthesis of epoxy resins bisphenol-A type. It leads to bisphenol-A diglycidyl ether, which is the monomer of bisphenol-A based epoxy resins. Reports of bisphenol-A sensitization, particularly in workers at epoxy resin plants, are controversial. Bisphenol-A was also reported as an allergen in fiberglass, semisynthetic waxes, footwear and dental materials. 

J. Cutwater and D. Kellogg, A simple experiment to show the origin of water debonding of resins. Report for Contract V-3219 (01) (X) (Sept. 15, 1961). 

Eorsgren, A., Linder, M. and Steihed, N., Substrate-polymer compatibility for various waterborne paint resins. Report 1999 IE, Swedish Corrosion Institute, Stockholm, 1999. 

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