Polyalkylene carbonate resin composition
View Patent ↗Provided is a compounding resin composition containing a compatibilizer, based on polyalkylene carbonate and polyolefin or biodegradable polyester. According to the present invention, a polyalkylene carbonate resin composition capable of improving mechanical properties such as tensile strength, elongation, tearing strength, and the like, or physical properties such as adhesive force, oxygen and moisture barrier properties, heat stability, flexibility, and the like, by preparing and applying the compatibilizer for improving compatibility of the compounding resin, and a multilayer film and a molded product manufactured using the same may be provided.
1. A polyalkylene carbonate resin composition comprising:
(A) a base resin composed of (a) polyalkylene carbonate and (b) at least one resin selected from polyolefin and biodegradable polyester; and
(B) a first compatibilizer which is a graft-polymerized compatibilizer, wherein the first compatibilizer contains a base resin composed of (a′) polyalkylene carbonate and (b′) at least one resin selected from polyolefin and biodegradable polyester, (c) a second compatibilizer, and (d) an initiator.
2. The polyalkylene carbonate resin composition of claim 1 , wherein the second compatibilizer is at least one selected from (C1-C20)alkyl acrylate based compounds, (C1-C20)alkyl methacrylate based compounds, styrene based compounds, itaconic acid, anhydride of itaconic acid, crotonic acid, anhydride of crotonic acid, fumaric acid, anhydride of fumaric acid, maleic acid, anhydride of maleic acid, silane based compounds, glycidyl acrylate, glycidyl methacrylate and glycidyl ethacrylate.
3. The polyalkylene carbonate resin composition of claim 1 , wherein the polyalkylene carbonate has a weight average molecular weight of 30,000 to 300,000 g/mol.
4. The polyalkylene carbonate resin composition of claim 1 , containing 0.5 to 10 parts by weight of (B) the first compatibilizer, based on 100 parts by weight of (A) the base resin, wherein (A) the base resin is composed of 5 to 95 wt % of (a) polyalkylene carbonate and 5 to 95 wt % of (b) at least one resin selected from polyolefin and biodegradable polyester.
5. The polyalkylene carbonate resin composition of claim 1 , wherein (B) the first compatibilizer contains 0.5 to 10 parts by weight of (c) the second compatibilizer and 0.01 to 1 part by weight of (d) the initiator, based on 100 parts by weight of the base resin contained in the first compatibilizer, and wherein the base resin contained in the first compatibilizer is composed of 20 to 80 wt % of (a′) polyalkylene carbonate and 20 to 80 wt % of (b′) at least one resin selected from polyolefin and biodegradable polyester.
6. A multilayer film comprising the polyalkylene carbonate resin composition of claim 1 .
7. A molded product comprising the polyalkylene carbonate resin composition of claim 1 .