Continuous process for the production of a zinc containing chemical product
First Claim
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1. A process for the preparation of a zinc oxide/pentaerythritol chemical product comprising the steps of:
- (i) providing a continuous processor having a raw material feed zone, a reaction zone, and a discharge zone;
(ii) feeding zinc oxide and pentaerythritol into said product feed zone and providing a raw material mixture comprising said zinc oxide and said pentaerythritol, said raw material mixture comprising from about 1.7 to about 2.3 moles of said pentaerythritol for about every 1 mole of said zinc oxide;
(iii) maintaining a melt temperature of from about 185°
C. to about 245°
C. in said reaction zone;
(iv) maintaining a temperature of from about 185°
C. to about 245°
C. in said discharge zone;
(v) transporting said raw material mixture into said reaction zone and maintaining a residence time for the raw material mixture in the reaction zone of from about 10 to about 60 seconds so as to provide a reacted chemical product;
(vi) transporting said chemical product into said discharge zone; and
(vii) removing said chemical product from said discharge zone.
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Abstract
The present invention provides a continuous melt process for the preparation of a zinc oxide/pentaerythritol chemical product comprising the steps of providing a continuous processor having a product feed zone, a reaction zone, and a discharge zone.
46 Citations
14 Claims
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1. A process for the preparation of a zinc oxide/pentaerythritol chemical product comprising the steps of:
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(i) providing a continuous processor having a raw material feed zone, a reaction zone, and a discharge zone; (ii) feeding zinc oxide and pentaerythritol into said product feed zone and providing a raw material mixture comprising said zinc oxide and said pentaerythritol, said raw material mixture comprising from about 1.7 to about 2.3 moles of said pentaerythritol for about every 1 mole of said zinc oxide; (iii) maintaining a melt temperature of from about 185°
C. to about 245°
C. in said reaction zone;(iv) maintaining a temperature of from about 185°
C. to about 245°
C. in said discharge zone;(v) transporting said raw material mixture into said reaction zone and maintaining a residence time for the raw material mixture in the reaction zone of from about 10 to about 60 seconds so as to provide a reacted chemical product; (vi) transporting said chemical product into said discharge zone; and (vii) removing said chemical product from said discharge zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A zinc oxide/pentaerythritol chemical product made by a continuous melt process, said continuous melt process comprises the process of feeding zinc oxide and pentaerythritol into the product feed zone of a continuous processor to provide a raw material mixture consisting essentially of said zinc oxide and said pentaerythritol, said raw material mixture consisting essentially of from about 1.7 to about 2.3 moles of said pentaerythritol for about every 1 mole of said zinc oxide, transporting said raw material mixture into the reaction zone of the continuous processor with the reaction zone providing a melt temperature of from about 185°
- C. to about 245°
C. such that said raw material mixture maintains a residence time in said reaction zone of from about 10 to about 60 seconds for said raw material mixture so as to provide a reacted zinc oxide/pentaerythritol chemical product, and transporting said chemical product into the discharge zone of the continuous processor. - View Dependent Claims (14)
- C. to about 245°
Specification