BE459552A

BE459552A -

Info

Publication number: BE459552A
Authority: BE
Priority date: 1940-07-01
Also published as: BE459553A; FR912294A; BE459554A

Description

       

  "Perfectionnements aux matières à mouler Il

  
Cette invention concerne des perfectionnements aux

  
matières à mouler et est un perfectionnement ou une modification

  
de l'invention revendiquée et décrite dans le mémoire descriptif accompagnant la demande de brevet belge déposée le 30 juillet

  
1945 sous le n[deg.] 356.082 .

  
L'invention revendiquée dans ce brevet concerne une

  
matière à mouler composée et sèche comprenant une charge

  
 <EMI ID=1.1> 

  
des particules ont reçu un double enduit et/ou.une double imnrésnation avec deux matières différentes, dont chacune  à l'état sec est apte à constituer avec la charge, un produit susceptible d'être moulé, c'est-à-dire donnant par application

  
 <EMI ID=2.1> 

  
comprend dans cet art. Une matière composée sèche de ce genre sera appelée dans la description qui suit et dans les revendications qui y sont ajoutées une matière "susceptible d'être moulée".

  
L'amélioration ou la modification suivant la présente invention concerne une matière composée susceptible d'être moulée sous l'influence de la chaleur et de la pression ,matière qui comprend une charge organique fibreuse particulière, dont substantiellement tous les particules individuelles ont deux enduits superposés, adhérents et enveloppants, l'un desdits enduits consistant en une résine synthétique au formaldéhyde non traitée (uncured) et l'autre des dits enduits consistant

  
en une matière protéique formant des films et non traitée, dérivée de sang.

  
Dans un exemple de l'invention, le premier enduit appliqué ou la première imprégnât.'on appliquée contient

  
du sang, comme la matière protéique et l'autre enduit

  
peut être une résine synthétique telle que l'aldéhyde phénolique, l'aldéhyde crésylique, l'aldéhyde d'urée ou de

  
la résine d'une classe de caoutchouc synthétique.

  
Dans un exemple spécifique de l'invention, 400 onces

  
de sang liquide sont mélangées avec 13 3/4 once d'hydroxyde

  
 <EMI ID=3.1> 

  
sous forme d'un lait, sont ajoutées et mélangées intimement .

  
 <EMI ID=4.1> 

  
de bois ou d'autres charges inertes et le mélange est desséché

  
 <EMI ID=5.1> 

  
 <EMI ID=6.1> 

  
grain du mélange est enduit, à fond, par la résine. On fait ensuite sécher cette dernière et la ratière qui en résulte



  "Improvements to molding materials It

  
This invention relates to improvements to

  
molding materials and is an improvement or modification

  
of the invention claimed and described in the description accompanying the Belgian patent application filed on July 30

  
1945 under n [deg.] 356.082.

  
The invention claimed in this patent relates to a

  
compound and dry molding material comprising a filler

  
 <EMI ID = 1.1>

  
particles have received a double coating and / or a double impregnation with two different materials, each of which in the dry state is capable of constituting with the filler, a product capable of being molded, that is to say giving by application

  
 <EMI ID = 2.1>

  
includes in this art. Such a dry compound will be referred to in the following description and in the claims appended thereto as "moldable" material.

  
The improvement or modification according to the present invention relates to a composite material capable of being molded under the influence of heat and pressure, which material comprises a particular fibrous organic filler, substantially all of the individual particles of which have two superimposed coatings. , adherent and enveloping, one of said coatings consisting of an untreated synthetic formaldehyde resin (uncured) and the other of said coatings consisting

  
made of an untreated film-forming protein material derived from blood.

  
In one example of the invention, the first coating applied or the first impregnation applied contains

  
blood, like protein material and the other coating

  
can be a synthetic resin such as phenolic aldehyde, cresyl aldehyde, urea or aldehyde

  
the resin of a class of synthetic rubber.

  
In a specific example of the invention, 400 ounces

  
of liquid blood are mixed with 13 3/4 ounces of hydroxide

  
 <EMI ID = 3.1>

  
in the form of a milk, are added and mixed thoroughly.

  
 <EMI ID = 4.1>

  
wood or other inert fillers and the mixture is dried out

  
 <EMI ID = 5.1>

  
 <EMI ID = 6.1>

  
grain of the mixture is coated, thoroughly, by the resin. The latter and the resulting dobby are then dried.

Claims

is, then ready to be pressed or molded according to the ordinary technique. If the sawdust was fine, you can add

blood a small amount of water, for example 100 ounces, before mixing.

In another example of this kind of material, we

can use instead of phenolic resin, urea formaldehyde resin (resin content 80-90%) with appropriate hardener. In this case, we should mold the

mixture without drying it further.

As an example of the granule of matter in which

the materials for the two coatings and / or impregnations

are synthetic resins, -15 pounds of formophenolic resin, stage A, are intimately mixed with 50

pounds of sawdust or other filler is impregnated

and / where coated. The product is then dried and is again impregnated and / or coated with 15 pounds of formo-resorcini resin.

that and is then dried and molded in the usual manner. <EMI ID = 7.1>

solid resin.

When we speak here of using blood, it can be derived from 'any kind, moreover, instead of liquid blood, we can use nothing but blood clots

or moving blood cells or any product

dried material of this kind. In the case of dried products

blood, such material is preferably processed

in a dispersion or solution before use.

CLAIMS.

the influence of heat and pressure, a material which comprises a particular fibrous organic filler, of which substantially all the individual particles have two superimposed coatings, adherent and enveloping, one of said coatings consisting of a synthetic resin ^ at the

<EMI ID = 9.1> Coated consisting of untreated, film-forming protein material derived from blood

the influence of heat and pressure, material which comprises a particular fibrous organic filler, of which substantially all the individual particles have

two superimposed plasters, adherent and enveloping, one of said plasters consisting of an untreated synthetic phenolic formalin resin (uncured) and the other of said plasters consisting of an untreated material containing protein and forming films, derived from blood .

3. Process for the preparation of a composite material capable of being molded under the influence of heat

and pressure, a process which comprises treating a particular fibrous organic filler consisting of wood particles with enough blood to provide substantially all of said individual particles with a coating thereof, desiccating the particles coated with blood, superimposing a layer of water-soluble formophenolic resin on the coated particles and drying the coated particles.

4. Process for preparing a composite material capable of being molded under the influence of heat

and pressure, a process which comprises the consecutive application of two adherent and enveloping coatings to substantially all of the individual particles of a particular fibrous organic filler, one of such coatings consisting of a liquid containing blood and 'other in a liquid

each impregnation operation being followed by an insufficient drying operation to cause the / treatment (cure)