Methacrylic resin compositions with improved tacky adhesion and method for preparation thereof
AssigneeKuraray Co., Ltd.
InventorsMichio Chatani, Tadayuki Tsuchiya, Kazuo Ohse, Akio Hara
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Abstract
A methacrylic resin composition with improved tacky adhesion comprising 100 parts by weight of a partially cross-linked polymer gel obtained by partially polymerizing a mixture comprising (A) 40 to 99% by weight of unsaturated monomer mixtures with or without containing the polymers thereof dissolved and (B) 60 to 1% by weight of a cross-linking agent, thereby allowing the total polymer content to be kept not exceeding 80% by weight, and increased by 4 to 62% by weight over the polymer content of said mixture, and 1 to 100 parts by weight of a syrup mainly composed of alkyl methacrylates containing the polymers thereof dissolved.
Claims8
A methacrylic resin composition having a tacky adhesion of 30 to 900 g/cm.sup.2 and comprising:
- 100 parts by weight of a partially crosslinked polymer gel obtained by partially polymerizing a mixture comprising:
- (A) 40 to 99% by weight of an unsaturated monomer consisting essentially of an alkyl methacrylate and
- (B) 60 to 1% by weight of a crosslinking agent containing at least two (meth)acryloyl groups in the molecule thereof,
- the total polymer content of said polymer gel being kept from exceeding 80% by weight and increased by 4 to 62% by weight over the polymer content of said mixture, and
- 1to 100 parts by weight of a syrup that principally contains an alkyl methacrylate and contains its polymer dissolved therein.
Dependencies are inferred from the claim text.