Patent GB-752805-A (GB)
Title: Production of polymerizable polyallyl ester composition
IPC: C08F36/20
Filed: 1954-02-09
Abstract: A polymerizable composition comprises (a) as a binder a polyallyl ester and (b) as a filler kaolin particles coated with a thermosetting reaction product of formaldehyde and a substance whose molecule has a plurality of NH2 groups each connected to a carbon atom in a heterocyclic ring of five or six carbon and nitrogen atoms of which not more than three are nitrogen, the carbon atoms being connected by a double bond to the nitrogen atoms, the ester constituting not less than 65 per cent of the binder, which may also comprise an unsaturated alkyd resin, and the filler constituting 5 to 85 per cent of the composition.  A large number of polyallyl esters are specified including those derived from allyl, methallyl and betachloroallyl alcohols with saturated, unsaturated and/or halogenated dibasic, tribasic and polybasic acids.  Also specified are various classes of polyallyl esters of which the following are representative examples:-diallyl ester of lacto carbonate, diallyl ethylene glycol dimaleate, sebacyl bis (allyl lactate), oxalyl bis (allyl glycinate), diallyl ester of diethyl ether a :a 1-dicarboxylic acid, ethers of a molecule of a glycol with two molecules of esters of hydroxy-substituted acids with allyl alcohol, and tetra-(allyl glycolate) silicate.  The polyallyl ester is preferably in the partially polymerized state. Other fillers such as asbestos, resin-coated asbestos and resin-treated cellulose may also be included.  Polymerization catalysts, which are preferably included, may be benzoyl, diacetyl, succinyl, toluoyl, p-bromobenzoyl, anisoyl, chloroacetyl, acetylbenzoyl and furoyl peroxides, t.-butyl perbenzoate, di-t.-butyl perphthalate, peracetic and perbenzoic acids, di-isopropylene and di-isobutylene ozonides and mixtures. The compositions may be mixed with aid of a solvent such as acetone which is then evaporated and the material is then sheeted and granulated. Many formaldehyde/amine resins, alkyd resins, asbestos fibres and cellulose fillers are specified.  Optional ingredients are inhibitors, plasticizers and pigments and examples also include zinc stearate as lubricant and zinc oxide. The moulded products have improved water resistance and electrical properties.  Specification 569,183 is referred to.ALSO:A polymerizable composition comprises (a) as a binder (see Group IV(a)), a polyallyl ester, and (b) as a filler, kaolin particles coated with a thermosetting reaction product of formaldehyde and a substance whose molecule has a plurality of NH2 groups each connected to a carbon atom in a heterocyclic ring of five or six carbon and nitrogen atoms of which not more than three are nitrogen, the carbon atoms being connected by a double bond to the nitrogen atoms, the ester constituting not less than 65 per cent of the binder and the filler constituting 5 to 85 per cent of the composition.  Other fillers such as asbestos, resin-coated asbestos and resin-treated cellulose may also be included.  The amines forming one of the resin components may be of the classes:-guanazoles, pyrimidines, quinazolines, melamines, and mono-, di- and triguanamines and many compounds are specified.  The products of the invention have improved water resistance and electrical properties. Specification 569,183 [Group IV] is referred to.