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US 2018/0086913 A1Published application
Gels and hydrogels and seed
AssigneeMoasis Inc
InventorsNaihong LI, Michael C. WILLIAMS
Life of this patent
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Abstract
Gels and gel-containing materials, including hydrogels, are described. A gel can be formed by blending polyacrylic acid (PAA) and a polyglycol, such as polytetramethylene ether glycol (PTMEG) at room temperature and, in some cases, without using a catalyst. The blend material can be used to form soft or hard materials, films and particles. The blend material can be combined with vinyl monomers and polymerize to form a hydrogel. The hydrogel can have a high mechanical strength and high water absorbency. The materials may coat a plant seed.
Claims28
A coated seed comprising:
- a plant seed;
- and
- a coating of a hydrogel comprising:
- a first polymeric material having polyacrylic acid;
- a second polymeric material comprising polytetramethylene ether glycol;
- and
- one or more species having a vinyl functionality.
4 more elements
A coated seed, comprising:
- a plant seed;
- and
- a coating of a gel comprising:
- a first polymeric material having polyacrylic acid;
- and
- a second polymeric material comprising polytetramethylene ether,
- wherein the first polymeric material is hydrogen-bonded to the second polymeric material.
4 more elements
A coated seed, comprising:
- a plant seed;
- and
- a coating of a three-dimensional gel formed from:
- a first polymeric material comprising polyacrylic acid;
- and
- a second polymeric material comprising a polyglycol having —O(CH2)n- units, where n is a number greater than or equal to 3,
- wherein the first polymeric material is hydrogen-bonded to the second polymeric material.
4 more elements
Dependencies are inferred from the claim text.