Methyl acrylate-diamine based polyamide resins and processes for producing the same
AssigneeHercules Incorporated
InventorsQu-Ming Gu, Armin Michel, H. N. Cheng, William W. Maslanka, Ronald R. Staib
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Abstract
The present invention contemplates poly(aminoamide) pre-polymers, polyamide polymers, a multi-step process for the synthesis of these pre-polymers and polymers using acrylates and at least one monomer containing at least two primary amines, and the resins resulting from the reaction of the polymers with an epihalohydrin. These resins may be used as wet strength resins and creping aids in the papermaking industry as well as surface additives for wool.
Claims42
A method for synthesizing polyamides comprising the steps of:
- (a) adding a first diamine to an acrylate forming a reaction mixture and resulting in an amine-containing intermediate pre-polymer reaction product, wherein the reaction mixture has a mole ratio of 2 moles of acrylate:
- 1 mole of first diamine;
- and
- (b) adding a second diamine to the reaction mixture of step (a) and allowing the polymerization to proceed to completion forming a final reaction product.
An intermediate pre-polymer reaction product, the formula comprising:
- R1OCOCHR2CH2NH[(CH2)nX(CH2)nNH]mCH2CHR2COOR1
- wherein R1 is selected from the group consisting of substituted C1-C6 alkyl group, unsubstituted C1-C6 alkyl group, and hydrogen;
- R2 is selected from the group consisting of H and C1-C2 alkyl group;
- X is selected from the group consisting of O, NH, S, CH3N—, alkyl (C1-C6) and aryl;
- n ranges from 1-10;
- and m ranges from 1-6.
A polyamide polymer, the formula comprising:
- [—COCHR2CH2NH[(CH2)nX(CH2)nNH]mCH2CHR2CONH[(CH2)n′Y(CH2)n′NH]m′]p
- wherein R2 is selected from the group consisting of H and C1-C2 alkyl group;
- X is selected from the group consisting of O, NH, S, CH3N—, alkyl (C1-C6) and aryl;
- Y is selected from the group consisting of O, NH, S, CH3N—, alkyl (C1-C6) and aryl;
- n and n′ range from 1-10;
- m and m′ range from 1-6;
- and p ranges from 1-1000.
A polyamide resin comprising:
- [—COCHR2CH2K[(CH2)nX(CH2)nK]mCH2CHR2R2CONH[m(CH2)n′Y(CH2)n′NH]m′]p
- wherein R2 is selected from the group consisting of H and C1-C2 alkyl group;
- n and n′ range from 1-10;
- m and m′ range from 1-6;
- p ranges from 1-1000;
- K is selected from the group consisting of
- 6
- X is selected from the group consisting of O, K, S, Q, alkyl (C1-C6) and aryl;
- Y is selected from the group consisting of O, K, S, Q, alkyl (C1-C6) and aryl;
- and Q is selected from the group consisting of
- 7
Dependencies are inferred from the claim text.