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US 5,691,405 AGranted
Rosin-supported urea-and urethane-modified emulsion polymers
AssigneeWestvaco Corporation
InventorG. Frederick Hutter
Life of this patent
Estimating the term…
Abstract
The invention relates to rosin-supported emulsion polymer compositions which are modified with urea-containing monomers and/or urethane-containing monomers reacted with conventional acrylic or styrenic monomers to produce emulsion polymer latices. These emulsion polymer latices can be utilized to formulate printing inks exhibiting superior peel resistances for use in adhesive and extrusion lamination printings.
Claims18
An emulsion polymer composition having a pH value in the range of 7.5 to 10.0, wherein said composition comprises the reaction products produced by:
- (A) reacting in an esterification reaction:
- (1) 60.0 to 98.0% by weight of the total composition of the esterification reaction of a member selected from the group consisting of fumarated rosin, maleated rosin, and combinations thereof;
- and
- (2) 2.0 to 40.0% by weight of the total composition of the esterification reaction of a polyol selected from the group consisting of polyethylene glycols having a number average molecular weight in the range of 100-10,000, glycerol, sorbitol, pentaerythritol, neopentyl glycol, ethylene glycol, and combinations thereof,
- to produce a rosin-based support resin having an acid number in the range of 120 to 250;
- and
- (B) further reacting in a polymerization reaction:
- (1) 5.0 to 40.0% by weight of the total composition of the polymerization reaction of said support resin,
- (2) 0.2 to 2.0% by weight of the total composition of the polymerization reaction of an initiator,
- (3) 1.0 to 12.0% by weight of the total composition of the polymerization reaction of a surfactant,
- (4) 31.0 to 93.3% by weight of the total composition of the polymerization reaction of a member selected from the group consisting of acrylic and styrenic monomers which do not contain either urea or urethane functionalities, and
- (5) 0.5 to 15.0% by weight of a urea or urethane-containing compound selected from the group consisting of monomers of the formula:
- ##STR5## where:
- R.sub.1 is a member selected from the group consisting of --H and --CH.sub.3,
- R.sub.2 is a member selected from the group consisting of C.sub.2 to C.sub.4 alkylenes,
- R.sub.3 is a member selected from the group consisting of C.sub.4 to C.sub.16 hydrocarbyl groups,
- X is a member selected from the group consisting of --O--R.sub.4 and --NR.sub.4 R.sub.4,
- R4 is a member selected from the group consisting of hydrogen, hydrocarbyl groups, keto-substituted hydrocarbyl groups, amino-substituted hydrocarbyl groups, amido-substituted hydrocarbyl groups, imido-substituted hydrocarbyl groups, ester-substituted hydrocarbyl groups, a carbocyclic or heterocyclic ring, polyether groups of the form ##STR6## where R.sub.5 is a member selected from the group consisting of --H, --CH.sub.3, and --CH.sub.2 CH.sub.3,
- R.sub.6 is a member selected from the group consisting of hydrocarbyl groups containing from 1 to 24 carbon atoms, and
- n is from 1 to 10, and combinations thereof, to produce the emulsion polymer composition.
17 more elements
Dependencies are inferred from the claim text.