Latex for high performance masking tape

Details Latex for high performance masking tape Latex for high performance masking tape

1995-12-22

1997-03-11

Weber, Thomas R.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4272088, 427395, 4274301, B05D 312

Patent

active

056099177

ABSTRACT:
This invention discloses a process for preparing a latex which is particularly beneficial for utilization in manufacturing high performance masking tape, which comprises the seqential steps of (1) terpolymerizing a vinyl aromatic monomer, an alkyl acrylate monomer, and an alkyl propenoic acid monomer in an aqueous polymerization medium by free radical polymerization to produce a seed polymer latex; (2) neutralizing the seed polymer latex to a pH of about 6 to about 9 by the addition of an alkali; (3) adding additional vinyl aromatic monomer and alkyl acrylate monomer to the neutralized seed polymer latex; and (4) allowing the additional vinyl aromatic monomer and alkyl acrylate monomer to polymerize in a second polymerization step to a solids content of about 30% to about 50% to produce the latex which is particularly beneficial for utilization in manufacturing high performance masking tape.

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patent: 5139614 (1992-08-01), DePierne et al.
patent: 5209973 (1993-05-01), Wille et al.
patent: 5520997 (1996-05-01), Pourahmady et al.

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