Surface processing copolymer for synthetic papers
AssigneeMitsubishi Petrochemical Co., Ltd.
InventorKazuhide Hayama
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Abstract
An N-ampho-ionized copolymer treated with a monohaloacetic acid salt suitable for processing one or more surfaces of synthetic papers which imparts improved antistatic properties and printability to the synthetic papers, the copolymer comprising: (1) a monomer represented by general formula (I): ##STR1## (2) a monomer represented by the general formula (II): ##STR2## (3) a hydrophilic monomer (optional) and (4) a polymerizable hydrophobic vinyl monomer, is disclosed.
Claims9
A synthetic paper comprising a paper-like synthetic resin film or sheet having coated on at least one surface thereof an N-ampho-ionized copolymer treated with a monohaloacetic acid salt, said copolymer comprising:
- (1) about 25 to about 35% by weight of a monomer represented by general formula (I):
- ##STR36## wherein R.sub.1 is a hydrogen atom or a methyl group, R.sub.2 is an alkylene group having 1 to 4 carbon atoms and R.sub.3 and R.sub.4 are each an alkyl group having 1 to 4 carbon atoms;
- (2) about 30 to about 45% by weight of a monomer represented by general formula (II):
- ##STR37## wherein R.sub.1 is the same as defined above and R.sub.5 is an alkyl group having 12 to 18 carbon atoms;
- (3) 0 to about 15% by weight of a hydrophilic monomer;
- and
- (4) the balance of the copolymer comprising a copolymerizable hydrophobic monomer different from components (1) to (3), wherein the total amount of components (1) and (3) is not less than about 30% by weight.
Dependencies are inferred from the claim text.